chore: use testify instead of testing

Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>

cpu/cpu_darwin_test.go

@@ -7,6 +7,9 @@ import (
 	"os"
 	"runtime"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestInfo_AppleSilicon(t *testing.T) {
@@ -15,19 +18,13 @@ func TestInfo_AppleSilicon(t *testing.T) {
 	}
 
 	v, err := Info()
-	if err != nil {
+	require.NoErrorf(t, err, "cpu info should be implemented on darwin systems")
-		t.Errorf("cpu info should be implemented on darwin systems")
-	}
 
 	for _, vv := range v {
-		if vv.ModelName == "" {
+		assert.NotEmptyf(t, vv.ModelName, "could not get CPU info: %v", vv)
-			t.Errorf("could not get CPU info: %v", vv)
-		}
 		if vv.Mhz <= 0 && os.Getenv("CI") != "true" {
 			t.Errorf("could not get frequency of: %s", vv.ModelName)
 		}
-		if vv.Mhz > 6000 {
+		assert.LessOrEqualf(t, vv.Mhz, float64(6000), "cpu frequency is absurdly high value: %f MHz", vv.Mhz)
-			t.Errorf("cpu frequency is absurdly high value: %f MHz", vv.Mhz)
-		}
 	}
 }

cpu/cpu_freebsd_test.go

@@ -6,6 +6,9 @@ import (
 	"runtime"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
 
@@ -25,17 +28,9 @@ func TestParseDmesgBoot(t *testing.T) {
 	}
 	for _, tt := range cpuTests {
 		v, num, err := parseDmesgBoot(filepath.Join("testdata", "freebsd", tt.file))
-		if err != nil {
+		require.NoErrorf(t, err, "parseDmesgBoot failed(%s), %v", tt.file, err)
-			t.Errorf("parseDmesgBoot failed(%s), %v", tt.file, err)
+		assert.Equalf(t, num, tt.cpuNum, "parseDmesgBoot wrong length(%s), %v", tt.file, err)
-		}
+		assert.Equalf(t, v.Cores, tt.cores, "parseDmesgBoot wrong core(%s), %v", tt.file, err)
-		if num != tt.cpuNum {
+		assert.Truef(t, common.StringsContains(v.Flags, "fpu"), "parseDmesgBoot fail to parse features(%s), %v", tt.file, err)
-			t.Errorf("parseDmesgBoot wrong length(%s), %v", tt.file, err)
-		}
-		if v.Cores != tt.cores {
-			t.Errorf("parseDmesgBoot wrong core(%s), %v", tt.file, err)
-		}
-		if !common.StringsContains(v.Flags, "fpu") {
-			t.Errorf("parseDmesgBoot fail to parse features(%s), %v", tt.file, err)
-		}
 	}
 }

cpu/cpu_linux_test.go

@@ -7,18 +7,17 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestTimesEmpty(t *testing.T) {
 	t.Setenv("HOST_PROC", "testdata/linux/times_empty")
 	_, err := Times(true)
-	if err != nil {
+	require.NoErrorf(t, err, "Times(true) failed")
-		t.Error("Times(true) failed")
-	}
 	_, err = Times(false)
-	if err != nil {
+	assert.NoErrorf(t, err, "Times(false) failed")
-		t.Error("Times(false) failed")
-	}
 }
 
 func TestParseStatLine_424(t *testing.T) {
@@ -78,31 +77,19 @@ func TestCountsAgainstLscpu(t *testing.T) {
 	expectedLogical := expectedPhysical * threadsPerCore
 	physical, err := Counts(false)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	logical, err := Counts(true)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.Equalf(t, expectedPhysical, physical, "expected %v, got %v", expectedPhysical, physical)
-	}
+	assert.Equalf(t, expectedLogical, logical, "expected %v, got %v", expectedLogical, logical)
-	if expectedPhysical != physical {
-		t.Errorf("expected %v, got %v", expectedPhysical, physical)
-	}
-	if expectedLogical != logical {
-		t.Errorf("expected %v, got %v", expectedLogical, logical)
-	}
 }
 
 func TestCountsLogicalAndroid_1037(t *testing.T) { // https://github.com/shirou/gopsutil/issues/1037
 	t.Setenv("HOST_PROC", "testdata/linux/1037/proc")
 
 	count, err := Counts(true)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	expected := 8
-	if count != expected {
+	assert.Equalf(t, expected, count, "expected %v, got %v", expected, count)
-		t.Errorf("expected %v, got %v", expected, count)
-	}
 }

cpu/cpu_plan9_test.go

@@ -9,6 +9,8 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 var timesTests = []struct {
@@ -34,13 +36,9 @@ func TestTimesPlan9(t *testing.T) {
 			t.Setenv("HOST_ROOT", filepath.Join("testdata/plan9", tt.mockedRootFS))
 			stats, err := Times(false)
 			skipIfNotImplementedErr(t, err)
-			if err != nil {
+			require.NoError(t, err)
-				t.Errorf("error %v", err)
-			}
 			eps := cmpopts.EquateApprox(0, 0.00000001)
-			if !cmp.Equal(stats, tt.stats, eps) {
+			assert.Truef(t, cmp.Equal(stats, tt.stats, eps), "got: %+v\nwant: %+v", stats, tt.stats)
-				t.Errorf("got: %+v\nwant: %+v", stats, tt.stats)
-			}
 		})
 	}
 }

cpu/cpu_solaris_test.go

@@ -7,6 +7,8 @@ import (
 	"reflect"
 	"sort"
 	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
 func TestParseISAInfo(t *testing.T) {
@@ -51,20 +53,14 @@ func TestParseISAInfo(t *testing.T) {
 
 	for _, tc := range cases {
 		content, err := os.ReadFile(filepath.Join("testdata", "solaris", tc.filename))
-		if err != nil {
+		require.NoErrorf(t, err, "cannot read test case: %s", err)
-			t.Errorf("cannot read test case: %s", err)
-		}
 
 		sort.Strings(tc.expected)
 
 		flags, err := parseISAInfo(string(content))
-		if err != nil {
+		require.NoErrorf(t, err, "parseISAInfo: %s", err)
-			t.Fatalf("parseISAInfo: %s", err)
-		}
 
-		if !reflect.DeepEqual(tc.expected, flags) {
+		require.Truef(t, reflect.DeepEqual(tc.expected, flags), "Bad flags\nExpected: %v\n   Actual: %v", tc.expected, flags)
-			t.Fatalf("Bad flags\nExpected: %v\n   Actual: %v", tc.expected, flags)
-		}
 	}
 }
 
@@ -140,17 +136,11 @@ func TestParseProcessorInfo(t *testing.T) {
 
 	for _, tc := range cases {
 		content, err := os.ReadFile(filepath.Join("testdata", "solaris", tc.filename))
-		if err != nil {
+		require.NoErrorf(t, err, "cannot read test case: %s", err)
-			t.Errorf("cannot read test case: %s", err)
-		}
 
 		cpus, err := parseProcessorInfo(string(content))
-		if err != nil {
+		require.NoErrorf(t, err, "cannot parse processor info: %s", err)
-			t.Errorf("cannot parse processor info: %s", err)
-		}
 
-		if !reflect.DeepEqual(tc.expected, cpus) {
+		require.Truef(t, reflect.DeepEqual(tc.expected, cpus), "Bad Processor Info\nExpected: %v\n   Actual: %v", tc.expected, cpus)
-			t.Fatalf("Bad Processor Info\nExpected: %v\n   Actual: %v", tc.expected, cpus)
-		}
 	}
 }

cpu/cpu_test.go

@@ -10,6 +10,7 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
@@ -23,36 +24,22 @@ func skipIfNotImplementedErr(t *testing.T, err error) {
 func TestTimes(t *testing.T) {
 	v, err := Times(false)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, v, "could not get CPUs: %s", err)
-	}
-	if len(v) == 0 {
-		t.Error("could not get CPUs ", err)
-	}
 	empty := TimesStat{}
 	for _, vv := range v {
-		if vv == empty {
+		assert.NotEqualf(t, vv, empty, "could not get CPU User: %v", vv)
-			t.Errorf("could not get CPU User: %v", vv)
-		}
 	}
 
 	// test sum of per cpu stats is within margin of error for cpu total stats
 	cpuTotal, err := Times(false)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, cpuTotal, "could not get CPUs: %s", err)
-	}
-	if len(cpuTotal) == 0 {
-		t.Error("could not get CPUs", err)
-	}
 	perCPU, err := Times(true)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, perCPU, "could not get CPUs: %s", err)
-	}
-	if len(perCPU) == 0 {
-		t.Error("could not get CPUs", err)
-	}
 	var perCPUUserTimeSum float64
 	var perCPUSystemTimeSum float64
 	var perCPUIdleTimeSum float64
@@ -81,21 +68,13 @@ func TestTimes(t *testing.T) {
 func TestCounts(t *testing.T) {
 	v, err := Counts(true)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotZerof(t, v, "could not get logical CPU counts: %v", v)
-	}
-	if v == 0 {
-		t.Errorf("could not get logical CPU counts: %v", v)
-	}
 	t.Logf("logical cores: %d", v)
 	v, err = Counts(false)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotZerof(t, v, "could not get physical CPU counts: %v", v)
-	}
-	if v == 0 {
-		t.Errorf("could not get physical CPU counts: %v", v)
-	}
 	t.Logf("physical cores: %d", v)
 }
 
@@ -107,24 +86,16 @@ func TestTimeStat_String(t *testing.T) {
 		Idle:   300.1,
 	}
 	e := `{"cpu":"cpu0","user":100.1,"system":200.1,"idle":300.1,"nice":0.0,"iowait":0.0,"irq":0.0,"softirq":0.0,"steal":0.0,"guest":0.0,"guestNice":0.0}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "CPUTimesStat string is invalid: %v", v)
-		t.Errorf("CPUTimesStat string is invalid: %v", v)
-	}
 }
 
 func TestInfo(t *testing.T) {
 	v, err := Info()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, v, "could not get CPU Info")
-	}
-	if len(v) == 0 {
-		t.Errorf("could not get CPU Info")
-	}
 	for _, vv := range v {
-		if vv.ModelName == "" {
+		assert.NotEmptyf(t, vv.ModelName, "could not get CPU Info: %v", vv)
-			t.Errorf("could not get CPU Info: %v", vv)
-		}
 	}
 }
 
@@ -136,9 +107,7 @@ func testPercent(t *testing.T, percpu bool) {
 		testCount = 100
 		v, err := Percent(time.Millisecond, percpu)
 		skipIfNotImplementedErr(t, err)
-		if err != nil {
+		require.NoError(t, err)
-			t.Errorf("error %v", err)
-		}
 		// Skip CI which CPU num is different
 		if os.Getenv("CI") != "true" {
 			if (percpu && len(v) != numcpu) || (!percpu && len(v) != 1) {
@@ -150,9 +119,7 @@ func testPercent(t *testing.T, percpu bool) {
 		duration := time.Duration(10) * time.Microsecond
 		v, err := Percent(duration, percpu)
 		skipIfNotImplementedErr(t, err)
-		if err != nil {
+		require.NoError(t, err)
-			t.Errorf("error %v", err)
-		}
 		for _, percent := range v {
 			// Check for slightly greater then 100% to account for any rounding issues.
 			if percent < 0.0 || percent > 100.0001*float64(numcpu) {
@@ -170,9 +137,7 @@ func testPercentLastUsed(t *testing.T, percpu bool) {
 		testCount = 2
 		v, err := Percent(time.Millisecond, percpu)
 		skipIfNotImplementedErr(t, err)
-		if err != nil {
+		require.NoError(t, err)
-			t.Errorf("error %v", err)
-		}
 		// Skip CI which CPU num is different
 		if os.Getenv("CI") != "true" {
 			if (percpu && len(v) != numcpu) || (!percpu && len(v) != 1) {
@@ -183,9 +148,7 @@ func testPercentLastUsed(t *testing.T, percpu bool) {
 	for i := 0; i < testCount; i++ {
 		v, err := Percent(0, percpu)
 		skipIfNotImplementedErr(t, err)
-		if err != nil {
+		require.NoError(t, err)
-			t.Errorf("error %v", err)
-		}
 		time.Sleep(1 * time.Millisecond)
 		for _, percent := range v {
 			// Check for slightly greater then 100% to account for any rounding issues.

disk/disk_test.go

@@ -8,6 +8,9 @@ import (
 	"sync"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
 
@@ -24,12 +27,8 @@ func TestUsage(t *testing.T) {
 	}
 	v, err := Usage(path)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.Equalf(t, v.Path, path, "error %v", err)
-	}
-	if v.Path != path {
-		t.Errorf("error %v", err)
-	}
 }
 
 func TestPartitions(t *testing.T) {
@@ -40,31 +39,21 @@ func TestPartitions(t *testing.T) {
 	}
 	t.Log(ret)
 
-	if len(ret) == 0 {
+	assert.NotEmptyf(t, ret, "ret is empty")
-		t.Errorf("ret is empty")
-	}
 	for _, disk := range ret {
-		if disk.Device == "" {
+		assert.NotEmptyf(t, disk.Device, "Could not get device info %v", disk)
-			t.Errorf("Could not get device info %v", disk)
-		}
 	}
 }
 
 func TestIOCounters(t *testing.T) {
 	ret, err := IOCounters()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, ret, "ret is empty")
-	}
-	if len(ret) == 0 {
-		t.Errorf("ret is empty")
-	}
 	empty := IOCountersStat{}
 	for part, io := range ret {
 		t.Log(part, io)
-		if io == empty {
+		assert.NotEqualf(t, io, empty, "io_counter error %v, %v", part, io)
-			t.Errorf("io_counter error %v, %v", part, io)
-		}
 	}
 }
 
@@ -99,9 +88,7 @@ func TestUsageStat_String(t *testing.T) {
 		Fstype:            "ext4",
 	}
 	e := `{"path":"/","fstype":"ext4","total":1000,"free":2000,"used":3000,"usedPercent":50.1,"inodesTotal":4000,"inodesUsed":5000,"inodesFree":6000,"inodesUsedPercent":49.1}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "DiskUsageStat string is invalid: %v", v)
-		t.Errorf("DiskUsageStat string is invalid: %v", v)
-	}
 }
 
 func TestPartitionStat_String(t *testing.T) {
@@ -112,9 +99,7 @@ func TestPartitionStat_String(t *testing.T) {
 		Opts:       []string{"ro"},
 	}
 	e := `{"device":"sd01","mountpoint":"/","fstype":"ext4","opts":["ro"]}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "DiskUsageStat string is invalid: %v", v)
-		t.Errorf("DiskUsageStat string is invalid: %v", v)
-	}
 }
 
 func TestIOCountersStat_String(t *testing.T) {
@@ -127,7 +112,5 @@ func TestIOCountersStat_String(t *testing.T) {
 		SerialNumber: "SERIAL",
 	}
 	e := `{"readCount":100,"mergedReadCount":0,"writeCount":200,"mergedWriteCount":0,"readBytes":300,"writeBytes":400,"readTime":0,"writeTime":0,"iopsInProgress":0,"ioTime":0,"weightedIO":0,"name":"sd01","serialNumber":"SERIAL","label":""}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "DiskUsageStat string is invalid: %v", v)
-		t.Errorf("DiskUsageStat string is invalid: %v", v)
-	}
 }

docker/docker_linux_test.go

@@ -6,6 +6,9 @@ package docker
 import (
 	"context"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestGetDockerIDList(t *testing.T) {
@@ -47,40 +50,28 @@ func TestCgroupCPU(t *testing.T) {
 	v, _ := GetDockerIDList()
 	for _, id := range v {
 		v, err := CgroupCPUDockerWithContext(context.Background(), id)
-		if err != nil {
+		require.NoError(t, err)
-			t.Errorf("error %v", err)
+		assert.NotEmptyf(t, v.CPU, "could not get CgroupCPU %v", v)
-		}
-		if v.CPU == "" {
-			t.Errorf("could not get CgroupCPU %v", v)
-		}
 
 	}
 }
 
 func TestCgroupCPUInvalidId(t *testing.T) {
 	_, err := CgroupCPUDockerWithContext(context.Background(), "bad id")
-	if err == nil {
+	assert.Errorf(t, err, "Expected path does not exist error")
-		t.Error("Expected path does not exist error")
-	}
 }
 
 func TestCgroupMem(t *testing.T) {
 	v, _ := GetDockerIDList()
 	for _, id := range v {
 		v, err := CgroupMemDocker(id)
-		if err != nil {
+		require.NoError(t, err)
-			t.Errorf("error %v", err)
-		}
 		empty := &CgroupMemStat{}
-		if v == empty {
+		assert.NotSamef(t, v, empty, "Could not CgroupMemStat %v", v)
-			t.Errorf("Could not CgroupMemStat %v", v)
-		}
 	}
 }
 
 func TestCgroupMemInvalidId(t *testing.T) {
 	_, err := CgroupMemDocker("bad id")
-	if err == nil {
+	assert.Errorf(t, err, "Expected path does not exist error")
-		t.Error("Expected path does not exist error")
-	}
 }

host/host_aix_test.go

@@ -5,6 +5,8 @@ package host
 
 import (
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestParseUptimeValidInput(t *testing.T) {
@@ -21,9 +23,7 @@ func TestParseUptimeValidInput(t *testing.T) {
 	}
 	for _, tc := range testCases {
 		got := parseUptime(tc.input)
-		if got != tc.expected {
+		assert.Equalf(t, tc.expected, got, "parseUptime(%q) = %v, want %v", tc.input, got, tc.expected)
-			t.Errorf("parseUptime(%q) = %v, want %v", tc.input, got, tc.expected)
-		}
 	}
 }
 
@@ -36,8 +36,6 @@ func TestParseUptimeInvalidInput(t *testing.T) {
 
 	for _, tc := range testCases {
 		got := parseUptime(tc)
-		if got > 0 {
+		assert.LessOrEqualf(t, got, 0, "parseUptime(%q) expected zero to be returned, received %v", tc, got)
-			t.Errorf("parseUptime(%q) expected zero to be returned, received %v", tc, got)
-		}
 	}
 }

host/host_linux_test.go

@@ -7,6 +7,9 @@ import (
 	"context"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/common"
 )
 
@@ -14,54 +17,38 @@ func TestGetRedhatishVersion(t *testing.T) {
 	var ret string
 	c := []string{"Rawhide"}
 	ret = getRedhatishVersion(c)
-	if ret != "rawhide" {
+	assert.Equalf(t, "rawhide", ret, "Could not get version rawhide: %v", ret)
-		t.Errorf("Could not get version rawhide: %v", ret)
-	}
 
 	c = []string{"Fedora release 15 (Lovelock)"}
 	ret = getRedhatishVersion(c)
-	if ret != "15" {
+	assert.Equalf(t, "15", ret, "Could not get version fedora: %v", ret)
-		t.Errorf("Could not get version fedora: %v", ret)
-	}
 
 	c = []string{"Enterprise Linux Server release 5.5 (Carthage)"}
 	ret = getRedhatishVersion(c)
-	if ret != "5.5" {
+	assert.Equalf(t, "5.5", ret, "Could not get version redhat enterprise: %v", ret)
-		t.Errorf("Could not get version redhat enterprise: %v", ret)
-	}
 
 	c = []string{""}
 	ret = getRedhatishVersion(c)
-	if ret != "" {
+	assert.Emptyf(t, ret, "Could not get version with no value: %v", ret)
-		t.Errorf("Could not get version with no value: %v", ret)
-	}
 }
 
 func TestGetRedhatishPlatform(t *testing.T) {
 	var ret string
 	c := []string{"red hat"}
 	ret = getRedhatishPlatform(c)
-	if ret != "redhat" {
+	assert.Equalf(t, "redhat", ret, "Could not get platform redhat: %v", ret)
-		t.Errorf("Could not get platform redhat: %v", ret)
-	}
 
 	c = []string{"Fedora release 15 (Lovelock)"}
 	ret = getRedhatishPlatform(c)
-	if ret != "fedora" {
+	assert.Equalf(t, "fedora", ret, "Could not get platform fedora: %v", ret)
-		t.Errorf("Could not get platform fedora: %v", ret)
-	}
 
 	c = []string{"Enterprise Linux Server release 5.5 (Carthage)"}
 	ret = getRedhatishPlatform(c)
-	if ret != "enterprise" {
+	assert.Equalf(t, "enterprise", ret, "Could not get platform redhat enterprise: %v", ret)
-		t.Errorf("Could not get platform redhat enterprise: %v", ret)
-	}
 
 	c = []string{""}
 	ret = getRedhatishPlatform(c)
-	if ret != "" {
+	assert.Emptyf(t, ret, "Could not get platform with no value: %v", ret)
-		t.Errorf("Could not get platform with no value: %v", ret)
-	}
 }
 
 func TestGetlsbStruct(t *testing.T) {
@@ -85,21 +72,11 @@ func TestGetlsbStruct(t *testing.T) {
 			)
 
 			v, err := getlsbStruct(ctx)
-			if err != nil {
+			require.NoError(t, err)
-				t.Errorf("error %v", err)
+			assert.Equalf(t, v.ID, tt.id, "ID: want %v, got %v", tt.id, v.ID)
-			}
+			assert.Equalf(t, v.Release, tt.release, "Release: want %v, got %v", tt.release, v.Release)
-			if v.ID != tt.id {
+			assert.Equalf(t, v.Codename, tt.codename, "Codename: want %v, got %v", tt.codename, v.Codename)
-				t.Errorf("ID: want %v, got %v", tt.id, v.ID)
+			assert.Equalf(t, v.Description, tt.description, "Description: want %v, got %v", tt.description, v.Description)
-			}
-			if v.Release != tt.release {
-				t.Errorf("Release: want %v, got %v", tt.release, v.Release)
-			}
-			if v.Codename != tt.codename {
-				t.Errorf("Codename: want %v, got %v", tt.codename, v.Codename)
-			}
-			if v.Description != tt.description {
-				t.Errorf("Description: want %v, got %v", tt.description, v.Description)
-			}
 
 			t.Log(v)
 		})

host/host_test.go

@@ -8,6 +8,9 @@ import (
 	"sync"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
 
@@ -20,28 +23,18 @@ func skipIfNotImplementedErr(t *testing.T, err error) {
 func TestHostID(t *testing.T) {
 	v, err := HostID()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, v, "Could not get host id %v", v)
-	}
-	if v == "" {
-		t.Errorf("Could not get host id %v", v)
-	}
 	t.Log(v)
 }
 
 func TestInfo(t *testing.T) {
 	v, err := Info()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	empty := &InfoStat{}
-	if v == empty {
+	assert.NotSamef(t, v, empty, "Could not get hostinfo %v", v)
-		t.Errorf("Could not get hostinfo %v", v)
+	assert.NotZerof(t, v.Procs, "Could not determine the number of host processes")
-	}
-	if v.Procs == 0 {
-		t.Errorf("Could not determine the number of host processes")
-	}
 	t.Log(v)
 }
 
@@ -52,12 +45,8 @@ func TestUptime(t *testing.T) {
 
 	v, err := Uptime()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotZerof(t, v, "Could not get up time %v", v)
-	}
-	if v == 0 {
-		t.Errorf("Could not get up time %v", v)
-	}
 }
 
 func TestBootTime(t *testing.T) {
@@ -66,42 +55,28 @@ func TestBootTime(t *testing.T) {
 	}
 	v, err := BootTime()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotZerof(t, v, "Could not get boot time %v", v)
-	}
+	assert.GreaterOrEqualf(t, v, 946652400, "Invalid Boottime, older than 2000-01-01")
-	if v == 0 {
-		t.Errorf("Could not get boot time %v", v)
-	}
-	if v < 946652400 {
-		t.Errorf("Invalid Boottime, older than 2000-01-01")
-	}
 	t.Logf("first boot time: %d", v)
 
 	v2, err := BootTime()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.Equalf(t, v, v2, "cached boot time is different")
-	}
-	if v != v2 {
-		t.Errorf("cached boot time is different")
-	}
 	t.Logf("second boot time: %d", v2)
 }
 
 func TestUsers(t *testing.T) {
 	v, err := Users()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	empty := UserStat{}
 	if len(v) == 0 {
 		t.Skip("Users is empty")
 	}
 	for _, u := range v {
-		if u == empty {
+		assert.NotEqualf(t, u, empty, "Could not Users %v", v)
-			t.Errorf("Could not Users %v", v)
-		}
 		t.Log(u)
 	}
 }
@@ -118,9 +93,7 @@ func TestInfoStat_String(t *testing.T) {
 		KernelArch: "x86_64",
 	}
 	e := `{"hostname":"test","uptime":3000,"bootTime":1447040000,"procs":100,"os":"linux","platform":"ubuntu","platformFamily":"","platformVersion":"","kernelVersion":"","kernelArch":"x86_64","virtualizationSystem":"","virtualizationRole":"","hostId":"edfd25ff-3c9c-b1a4-e660-bd826495ad35"}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "HostInfoStat string is invalid:\ngot  %v\nwant %v", v, e)
-		t.Errorf("HostInfoStat string is invalid:\ngot  %v\nwant %v", v, e)
-	}
 }
 
 func TestUserStat_String(t *testing.T) {
@@ -131,23 +104,16 @@ func TestUserStat_String(t *testing.T) {
 		Started:  100,
 	}
 	e := `{"user":"user","terminal":"term","host":"host","started":100}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "UserStat string is invalid: %v", v)
-		t.Errorf("UserStat string is invalid: %v", v)
-	}
 }
 
 func TestGuid(t *testing.T) {
 	id, err := HostID()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
+	assert.NotEmptyf(t, id, "Host id is empty")
-	}
-	if id == "" {
-		t.Error("Host id is empty")
-	} else {
 	t.Logf("Host id value: %v", id)
 }
-}
 
 func TestVirtualization(t *testing.T) {
 	wg := sync.WaitGroup{}
@@ -158,9 +124,7 @@ func TestVirtualization(t *testing.T) {
 			system, role, err := Virtualization()
 			wg.Done()
 			skipIfNotImplementedErr(t, err)
-			if err != nil {
+			assert.NoErrorf(t, err, "Virtualization() failed, %v", err)
-				t.Errorf("Virtualization() failed, %v", err)
-			}
 
 			if j == 9 {
 				t.Logf("Virtualization(): %s, %s", system, role)
@@ -173,12 +137,8 @@ func TestVirtualization(t *testing.T) {
 func TestKernelVersion(t *testing.T) {
 	version, err := KernelVersion()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "KernelVersion() failed, %v", err)
-		t.Errorf("KernelVersion() failed, %v", err)
+	assert.NotEmptyf(t, version, "KernelVersion() returns empty: %s", version)
-	}
-	if version == "" {
-		t.Errorf("KernelVersion() returns empty: %s", version)
-	}
 
 	t.Logf("KernelVersion(): %s", version)
 }
@@ -186,12 +146,8 @@ func TestKernelVersion(t *testing.T) {
 func TestPlatformInformation(t *testing.T) {
 	platform, family, version, err := PlatformInformation()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "PlatformInformation() failed, %v", err)
-		t.Errorf("PlatformInformation() failed, %v", err)
+	assert.NotEmptyf(t, platform, "PlatformInformation() returns empty: %v", platform)
-	}
-	if platform == "" {
-		t.Errorf("PlatformInformation() returns empty: %v", platform)
-	}
 
 	t.Logf("PlatformInformation(): %v, %v, %v", platform, family, version)
 }

internal/common/common_test.go

@@ -9,118 +9,71 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/common"
 )
 
 func TestReadlines(t *testing.T) {
 	ret, err := ReadLines("common_test.go")
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
+	assert.Containsf(t, ret[1], "package common", "could not read correctly")
-	}
-	if !strings.Contains(ret[1], "package common") {
-		t.Error("could not read correctly")
-	}
 }
 
 func TestReadLinesOffsetN(t *testing.T) {
 	ret, err := ReadLinesOffsetN("common_test.go", 3, 1)
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
+	assert.Containsf(t, ret[0], `import (`, "could not read correctly")
-	}
-	if !strings.Contains(ret[0], `import (`) {
-		t.Error("could not read correctly")
-	}
 }
 
 func TestIntToString(t *testing.T) {
-	src := []int8{65, 66, 67}
+	assert.Equalf(t, "ABC", IntToString([]int8{65, 66, 67}), "could not convert")
-	dst := IntToString(src)
-	if dst != "ABC" {
-		t.Error("could not convert")
-	}
 }
 
 func TestByteToString(t *testing.T) {
-	src := []byte{65, 66, 67}
+	assert.Equalf(t, "ABC", ByteToString([]byte{65, 66, 67}), "could not convert")
-	dst := ByteToString(src)
-	if dst != "ABC" {
-		t.Error("could not convert")
-	}
 
-	src = []byte{0, 65, 66, 67}
+	assert.Equalf(t, "ABC", ByteToString([]byte{0, 65, 66, 67}), "could not convert")
-	dst = ByteToString(src)
-	if dst != "ABC" {
-		t.Error("could not convert")
-	}
 }
 
 func TestHexToUint32(t *testing.T) {
-	if HexToUint32("FFFFFFFF") != 4294967295 {
+	assert.Equalf(t, uint32(4294967295), HexToUint32("FFFFFFFF"), "Could not convert")
-		t.Error("Could not convert")
-	}
 }
 
 func TestMustParseInt32(t *testing.T) {
-	ret := mustParseInt32("11111")
+	assert.Equalf(t, int32(11111), mustParseInt32("11111"), "could not parse")
-	if ret != int32(11111) {
-		t.Error("could not parse")
-	}
 }
 
 func TestMustParseUint64(t *testing.T) {
-	ret := mustParseUint64("11111")
+	assert.Equalf(t, uint64(11111), mustParseUint64("11111"), "could not parse")
-	if ret != uint64(11111) {
-		t.Error("could not parse")
-	}
 }
 
 func TestMustParseFloat64(t *testing.T) {
-	ret := mustParseFloat64("11111.11")
+	require.InDeltaf(t, float64(11111.11), mustParseFloat64("11111.11"), 0.01, "could not parse")
-	if ret != float64(11111.11) {
+	require.InDeltaf(t, float64(11111), mustParseFloat64("11111"), 0.01, "could not parse")
-		t.Error("could not parse")
-	}
-	ret = mustParseFloat64("11111")
-	if ret != float64(11111) {
-		t.Error("could not parse")
-	}
 }
 
 func TestStringsContains(t *testing.T) {
 	target, err := ReadLines("common_test.go")
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
+	assert.Truef(t, StringsContains(target, "func TestStringsContains(t *testing.T) {"), "cloud not test correctly")
-	}
-	if !StringsContains(target, "func TestStringsContains(t *testing.T) {") {
-		t.Error("cloud not test correctly")
-	}
 }
 
 func TestPathExists(t *testing.T) {
-	if !PathExists("common_test.go") {
+	assert.Truef(t, PathExists("common_test.go"), "exists but return not exists")
-		t.Error("exists but return not exists")
+	assert.Falsef(t, PathExists("should_not_exists.go"), "not exists but return exists")
-	}
-	if PathExists("should_not_exists.go") {
-		t.Error("not exists but return exists")
-	}
 }
 
 func TestPathExistsWithContents(t *testing.T) {
-	if !PathExistsWithContents("common_test.go") {
+	assert.Truef(t, PathExistsWithContents("common_test.go"), "exists but return not exists")
-		t.Error("exists but return not exists")
+	assert.Falsef(t, PathExistsWithContents("should_not_exists.go"), "not exists but return exists")
-	}
-	if PathExistsWithContents("should_not_exists.go") {
-		t.Error("not exists but return exists")
-	}
 
 	f, err := os.CreateTemp("", "empty_test.txt")
-	if err != nil {
+	require.NoErrorf(t, err, "CreateTemp failed, %s", err)
-		t.Errorf("CreateTemp failed, %s", err)
-	}
 	defer os.Remove(f.Name()) // clean up
 
-	if PathExistsWithContents(f.Name()) {
+	assert.Falsef(t, PathExistsWithContents(f.Name()), "exists but no content file return true")
-		t.Error("exists but no content file return true")
-	}
 }
 
 func TestHostEtc(t *testing.T) {
@@ -128,23 +81,17 @@ func TestHostEtc(t *testing.T) {
 		t.Skip("windows doesn't have etc")
 	}
 	p := HostEtcWithContext(context.Background(), "mtab")
-	if p != "/etc/mtab" {
+	assert.Equalf(t, "/etc/mtab", p, "invalid HostEtc, %s", p)
-		t.Errorf("invalid HostEtc, %s", p)
-	}
 }
 
 func TestGetSysctrlEnv(t *testing.T) {
 	// Append case
 	env := getSysctrlEnv([]string{"FOO=bar"})
-	if !reflect.DeepEqual(env, []string{"FOO=bar", "LC_ALL=C"}) {
+	assert.Truef(t, reflect.DeepEqual(env, []string{"FOO=bar", "LC_ALL=C"}), "unexpected append result from getSysctrlEnv: %q", env)
-		t.Errorf("unexpected append result from getSysctrlEnv: %q", env)
-	}
 
 	// Replace case
 	env = getSysctrlEnv([]string{"FOO=bar", "LC_ALL=en_US.UTF-8"})
-	if !reflect.DeepEqual(env, []string{"FOO=bar", "LC_ALL=C"}) {
+	assert.Truef(t, reflect.DeepEqual(env, []string{"FOO=bar", "LC_ALL=C"}), "unexpected replace result from getSysctrlEnv: %q", env)
-		t.Errorf("unexpected replace result from getSysctrlEnv: %q", env)
-	}
 
 	// Test against real env
 	env = getSysctrlEnv(os.Environ())
@@ -154,13 +101,9 @@ func TestGetSysctrlEnv(t *testing.T) {
 			found = true
 			continue
 		}
-		if strings.HasPrefix(v, "LC_ALL") {
+		require.Falsef(t, strings.HasPrefix(v, "LC_ALL"), "unexpected LC_ALL value: %q", v)
-			t.Fatalf("unexpected LC_ALL value: %q", v)
-		}
-	}
-	if !found {
-		t.Errorf("unexpected real result from getSysctrlEnv: %q", env)
 	}
+	assert.Truef(t, found, "unexpected real result from getSysctrlEnv: %q", env)
 }
 
 func TestGetEnvDefault(t *testing.T) {
@@ -168,9 +111,7 @@ func TestGetEnvDefault(t *testing.T) {
 		t.Skip("windows doesn't have etc")
 	}
 	p := HostEtcWithContext(context.Background(), "mtab")
-	if p != "/etc/mtab" {
+	assert.Equalf(t, "/etc/mtab", p, "invalid HostEtc, %s", p)
-		t.Errorf("invalid HostEtc, %s", p)
-	}
 }
 
 func TestGetEnvWithNoContext(t *testing.T) {
@@ -179,9 +120,7 @@ func TestGetEnvWithNoContext(t *testing.T) {
 	}
 	t.Setenv("HOST_ETC", "/bar")
 	p := HostEtcWithContext(context.Background(), "mtab")
-	if p != "/bar/mtab" {
+	assert.Equalf(t, "/bar/mtab", p, "invalid HostEtc, %s", p)
-		t.Errorf("invalid HostEtc, %s", p)
-	}
 }
 
 func TestGetEnvWithContextOverride(t *testing.T) {
@@ -191,7 +130,5 @@ func TestGetEnvWithContextOverride(t *testing.T) {
 	t.Setenv("HOST_ETC", "/bar")
 	ctx := context.WithValue(context.Background(), common.EnvKey, common.EnvMap{common.HostEtcEnvKey: "/foo"})
 	p := HostEtcWithContext(ctx, "mtab")
-	if p != "/foo/mtab" {
+	assert.Equalf(t, "/foo/mtab", p, "invalid HostEtc, %s", p)
-		t.Errorf("invalid HostEtc, %s", p)
-	}
 }

load/load_test.go

@@ -6,6 +6,9 @@ import (
 	"fmt"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
 
@@ -18,14 +21,10 @@ func skipIfNotImplementedErr(tb testing.TB, err error) {
 func TestAvg(t *testing.T) {
 	v, err := Avg()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 
 	empty := &AvgStat{}
-	if v == empty {
+	assert.NotSamef(t, v, empty, "error load: %v", v)
-		t.Errorf("error load: %v", v)
-	}
 	t.Log(v)
 }
 
@@ -36,23 +35,17 @@ func TestAvgStat_String(t *testing.T) {
 		Load15: 30.1,
 	}
 	e := `{"load1":10.1,"load5":20.1,"load15":30.1}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "LoadAvgStat string is invalid: %v", v)
-		t.Errorf("LoadAvgStat string is invalid: %v", v)
-	}
 	t.Log(e)
 }
 
 func TestMisc(t *testing.T) {
 	v, err := Misc()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 
 	empty := &MiscStat{}
-	if v == empty {
+	assert.NotSamef(t, v, empty, "error load: %v", v)
-		t.Errorf("error load: %v", v)
-	}
 	t.Log(v)
 }
 
@@ -65,9 +58,7 @@ func TestMiscStatString(t *testing.T) {
 		Ctxt:         3,
 	}
 	e := `{"procsTotal":4,"procsCreated":5,"procsRunning":1,"procsBlocked":2,"ctxt":3}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "TestMiscString string is invalid: %v", v)
-		t.Errorf("TestMiscString string is invalid: %v", v)
-	}
 	t.Log(e)
 }
 
@@ -75,13 +66,9 @@ func BenchmarkLoad(b *testing.B) {
 	loadAvg := func(tb testing.TB) {
 		v, err := Avg()
 		skipIfNotImplementedErr(tb, err)
-		if err != nil {
+		require.NoErrorf(tb, err, "error %v", err)
-			tb.Errorf("error %v", err)
-		}
 		empty := &AvgStat{}
-		if v == empty {
+		assert.NotSamef(tb, v, empty, "error load: %v", v)
-			tb.Errorf("error load: %v", v)
-		}
 	}
 
 	b.Run("FirstCall", func(b *testing.B) {

mem/mem_darwin_test.go

@@ -26,7 +26,7 @@ func TestVirtualMemoryDarwin(t *testing.T) {
 	assert.Equal(t, uint64(actualTotal), v.Total)
 
 	assert.Positive(t, v.Available)
-	assert.Equal(t, v.Available, v.Free+v.Inactive, "%v", v)
+	assert.Equalf(t, v.Available, v.Free+v.Inactive, "%v", v)
 
 	assert.Positive(t, v.Used)
 	assert.Less(t, v.Used, v.Total)

mem/mem_linux_test.go

@@ -18,9 +18,7 @@ func TestExVirtualMemory(t *testing.T) {
 	ex := NewExLinux()
 
 	v, err := ex.VirtualMemory()
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
-	}
 
 	t.Log(v)
 }
@@ -130,12 +128,8 @@ func TestVirtualMemoryLinux(t *testing.T) {
 
 			stat, err := VirtualMemory()
 			skipIfNotImplementedErr(t, err)
-			if err != nil {
+			require.NoError(t, err)
-				t.Errorf("error %v", err)
+			assert.Truef(t, reflect.DeepEqual(stat, tt.stat), "got: %+v\nwant: %+v", stat, tt.stat)
-			}
-			if !reflect.DeepEqual(stat, tt.stat) {
-				t.Errorf("got: %+v\nwant: %+v", stat, tt.stat)
-			}
 		})
 	}
 }

mem/mem_plan9_test.go

@@ -6,6 +6,9 @@ package mem
 import (
 	"reflect"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 var virtualMemoryTests = []struct {
@@ -32,12 +35,8 @@ func TestVirtualMemoryPlan9(t *testing.T) {
 
 			stat, err := VirtualMemory()
 			skipIfNotImplementedErr(t, err)
-			if err != nil {
+			require.NoError(t, err)
-				t.Errorf("error %v", err)
+			assert.Truef(t, reflect.DeepEqual(stat, tt.stat), "got: %+v\nwant: %+v", stat, tt.stat)
-			}
-			if !reflect.DeepEqual(stat, tt.stat) {
-				t.Errorf("got: %+v\nwant: %+v", stat, tt.stat)
-			}
 		})
 	}
 }
@@ -62,12 +61,8 @@ func TestSwapMemoryPlan9(t *testing.T) {
 
 			swap, err := SwapMemory()
 			skipIfNotImplementedErr(t, err)
-			if err != nil {
+			require.NoError(t, err)
-				t.Errorf("error %v", err)
+			assert.Truef(t, reflect.DeepEqual(swap, tt.swap), "got: %+v\nwant: %+v", swap, tt.swap)
-			}
-			if !reflect.DeepEqual(swap, tt.swap) {
-				t.Errorf("got: %+v\nwant: %+v", swap, tt.swap)
-			}
 		})
 	}
 }

mem/mem_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
@@ -25,13 +26,9 @@ func TestVirtualMemory(t *testing.T) {
 
 	v, err := VirtualMemory()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	empty := &VirtualMemoryStat{}
-	if v == empty {
+	assert.NotSamef(t, v, empty, "error %v", v)
-		t.Errorf("error %v", v)
-	}
 	t.Log(v)
 
 	assert.Positive(t, v.Total)
@@ -51,11 +48,11 @@ func TestVirtualMemory(t *testing.T) {
 		total = v.Used + v.Free + v.Cached + v.Inactive + v.Laundry
 		totalStr = "used + free + cached + inactive + laundry"
 	}
-	assert.Equal(t, v.Total, total,
+	assert.Equalf(t, v.Total, total,
 		"Total should be computable (%v): %v", totalStr, v)
 
 	assert.True(t, runtime.GOOS == "windows" || v.Free > 0)
-	assert.True(t, runtime.GOOS == "windows" || v.Available > v.Free,
+	assert.Truef(t, runtime.GOOS == "windows" || v.Available > v.Free,
 		"Free should be a subset of Available: %v", v)
 
 	inDelta := assert.InDelta
@@ -70,13 +67,9 @@ func TestVirtualMemory(t *testing.T) {
 func TestSwapMemory(t *testing.T) {
 	v, err := SwapMemory()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	empty := &SwapMemoryStat{}
-	if v == empty {
+	assert.NotSamef(t, v, empty, "error %v", v)
-		t.Errorf("error %v", v)
-	}
 
 	t.Log(v)
 }
@@ -91,9 +84,7 @@ func TestVirtualMemoryStat_String(t *testing.T) {
 	}
 	t.Log(v)
 	e := `{"total":10,"available":20,"used":30,"usedPercent":30.1,"free":40,"active":0,"inactive":0,"wired":0,"laundry":0,"buffers":0,"cached":0,"writeBack":0,"dirty":0,"writeBackTmp":0,"shared":0,"slab":0,"sreclaimable":0,"sunreclaim":0,"pageTables":0,"swapCached":0,"commitLimit":0,"committedAS":0,"highTotal":0,"highFree":0,"lowTotal":0,"lowFree":0,"swapTotal":0,"swapFree":0,"mapped":0,"vmallocTotal":0,"vmallocUsed":0,"vmallocChunk":0,"hugePagesTotal":0,"hugePagesFree":0,"hugePagesRsvd":0,"hugePagesSurp":0,"hugePageSize":0,"anonHugePages":0}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "VirtualMemoryStat string is invalid: %v", v)
-		t.Errorf("VirtualMemoryStat string is invalid: %v", v)
-	}
 }
 
 func TestSwapMemoryStat_String(t *testing.T) {
@@ -110,28 +101,20 @@ func TestSwapMemoryStat_String(t *testing.T) {
 		PgMajFault:  6,
 	}
 	e := `{"total":10,"used":30,"free":40,"usedPercent":30.1,"sin":1,"sout":2,"pgIn":3,"pgOut":4,"pgFault":5,"pgMajFault":6}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "SwapMemoryStat string is invalid: %v", v)
-		t.Errorf("SwapMemoryStat string is invalid: %v", v)
-	}
 }
 
 func TestSwapDevices(t *testing.T) {
 	v, err := SwapDevices()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "error calling SwapDevices: %v", err)
-		t.Fatalf("error calling SwapDevices: %v", err)
-	}
 
 	t.Logf("SwapDevices() -> %+v", v)
 
-	if len(v) == 0 {
+	require.NotEmptyf(t, v, "no swap devices found. [this is expected if the host has swap disabled]")
-		t.Fatalf("no swap devices found. [this is expected if the host has swap disabled]")
-	}
 
 	for _, device := range v {
-		if device.Name == "" {
+		require.NotEmptyf(t, device.Name, "deviceName not set in %+v", device)
-			t.Fatalf("deviceName not set in %+v", device)
-		}
 		if device.FreeBytes == 0 {
 			t.Logf("[WARNING] free-bytes is zero in %+v. This might be expected", device)
 		}

net/net_darwin_test.go

@@ -79,7 +79,7 @@ func TestParseNetstatOutput(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Len(t, nsInterfaces, 8)
 	for index := range nsInterfaces {
-		assert.NotNil(t, nsInterfaces[index].stat, "Index %d", index)
+		assert.NotNilf(t, nsInterfaces[index].stat, "Index %d", index)
 	}
 
 	assert.NotNil(t, nsInterfaces[0].linkID)
@@ -110,7 +110,7 @@ func TestParseNetstatTruncated(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Len(t, nsInterfaces, 11)
 	for index := range nsInterfaces {
-		assert.NotNil(t, nsInterfaces[index].stat, "Index %d", index)
+		assert.NotNilf(t, nsInterfaces[index].stat, "Index %d", index)
 	}
 
 	const truncatedIface = "utun8"
@@ -137,5 +137,5 @@ func TestParseNetstatTruncated(t *testing.T) {
 
 	mapUsage := newMapInterfaceNameUsage(nsInterfaces)
 	assert.True(t, mapUsage.isTruncated())
-	assert.Len(t, mapUsage.notTruncated(), 3, "en0, gif0 and stf0")
+	assert.Lenf(t, mapUsage.notTruncated(), 3, "en0, gif0 and stf0")
 }

net/net_linux_test.go

@@ -21,7 +21,7 @@ func TestIOCountersByFileParsing(t *testing.T) {
 	tmpfile, err := os.CreateTemp("", "proc_dev_net")
 	defer os.Remove(tmpfile.Name()) // clean up
 
-	require.NoError(t, err, "Temporary file creation failed: ", err)
+	require.NoErrorf(t, err, "Temporary file creation failed: %s", err)
 
 	cases := [4][2]string{
 		{"eth0:   ", "eth1:   "},
@@ -31,7 +31,7 @@ func TestIOCountersByFileParsing(t *testing.T) {
 	}
 	for _, testCase := range cases {
 		err = tmpfile.Truncate(0)
-		require.NoError(t, err, "Temporary file truncating problem: ", err)
+		require.NoErrorf(t, err, "Temporary file truncating problem: %s", err)
 
 		// Parse interface name for assertion
 		interface0 := strings.TrimSpace(testCase[0])
@@ -45,7 +45,7 @@ func TestIOCountersByFileParsing(t *testing.T) {
 
 		// Write /proc/net/dev sample output
 		_, err = tmpfile.Write(proc)
-		require.NoError(t, err, "Temporary file writing failed: ", err)
+		require.NoErrorf(t, err, "Temporary file writing failed: %s", err)
 
 		counters, err := IOCountersByFile(true, tmpfile.Name())
 
@@ -76,8 +76,7 @@ func TestIOCountersByFileParsing(t *testing.T) {
 		assert.Equal(t, uint64(1300), counters[1].Fifoout)
 	}
 
-	err = tmpfile.Close()
+	assert.NoErrorf(t, tmpfile.Close(), "Temporary file closing failed")
-	assert.NoError(t, err, "Temporary file closing failed: ", err)
 }
 
 func TestGetProcInodesAll(t *testing.T) {
@@ -180,11 +179,11 @@ func TestDecodeAddress(t *testing.T) {
 		}
 		addr, err := decodeAddress(uint32(family), src)
 		if dst.Error {
-			assert.Error(t, err, src)
+			assert.Errorf(t, err, src)
 		} else {
-			require.NoError(t, err, src)
+			require.NoErrorf(t, err, src)
-			assert.Equal(t, dst.IP, addr.IP, src)
+			assert.Equalf(t, dst.IP, addr.IP, src)
-			assert.Equal(t, dst.Port, int(addr.Port), src)
+			assert.Equalf(t, dst.Port, int(addr.Port), src)
 		}
 	}
 }
@@ -197,7 +196,7 @@ func TestReverse(t *testing.T) {
 func TestConntrackStatFileParsing(t *testing.T) {
 	tmpfile, err := os.CreateTemp("", "proc_net_stat_conntrack")
 	defer os.Remove(tmpfile.Name())
-	require.NoError(t, err, "Temporary file creation failed: ", err)
+	require.NoErrorf(t, err, "Temporary file creation failed: %s", err)
 
 	data := []byte(`
 entries  searched found new invalid ignore delete deleteList insert insertFailed drop earlyDrop icmpError  expectNew expectCreate expectDelete searchRestart
@@ -246,12 +245,12 @@ entries  searched found new invalid ignore delete deleteList insert insertFailed
 
 	// Write data to tempfile
 	_, err = tmpfile.Write(data)
-	require.NoError(t, err, "Temporary file writing failed: ", err)
+	require.NoErrorf(t, err, "Temporary file writing failed: %s", err)
 
 	// Function under test
 	stats, err := conntrackStatsFromFile(tmpfile.Name(), true)
 	require.NoError(t, err)
-	assert.Len(t, stats, 8, "Expected 8 results")
+	assert.Lenf(t, stats, 8, "Expected 8 results")
 
 	summary := &ConntrackStat{}
 	for i, exp := range slist.Items() {

net/net_test.go

@@ -8,6 +8,9 @@ import (
 	"runtime"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
 
@@ -21,9 +24,7 @@ func TestAddrString(t *testing.T) {
 	v := Addr{IP: "192.168.0.1", Port: 8000}
 
 	s := fmt.Sprintf("%v", v)
-	if s != `{"ip":"192.168.0.1","port":8000}` {
+	assert.JSONEqf(t, `{"ip":"192.168.0.1","port":8000}`, s, "Addr string is invalid: %v", v)
-		t.Errorf("Addr string is invalid: %v", v)
-	}
 }
 
 func TestIOCountersStatString(t *testing.T) {
@@ -32,9 +33,7 @@ func TestIOCountersStatString(t *testing.T) {
 		BytesSent: 100,
 	}
 	e := `{"name":"test","bytesSent":100,"bytesRecv":0,"packetsSent":0,"packetsRecv":0,"errin":0,"errout":0,"dropin":0,"dropout":0,"fifoin":0,"fifoout":0}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "NetIOCountersStat string is invalid: %v", v)
-		t.Errorf("NetIOCountersStat string is invalid: %v", v)
-	}
 }
 
 func TestProtoCountersStatString(t *testing.T) {
@@ -47,9 +46,7 @@ func TestProtoCountersStatString(t *testing.T) {
 		},
 	}
 	e := `{"protocol":"tcp","stats":{"ActiveOpens":4000,"MaxConn":-1,"PassiveOpens":3000}}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "NetProtoCountersStat string is invalid: %v", v)
-		t.Errorf("NetProtoCountersStat string is invalid: %v", v)
-	}
 }
 
 func TestConnectionStatString(t *testing.T) {
@@ -60,28 +57,18 @@ func TestConnectionStatString(t *testing.T) {
 		Uids:   []int32{10, 10},
 	}
 	e := `{"fd":10,"family":10,"type":10,"localaddr":{"ip":"","port":0},"remoteaddr":{"ip":"","port":0},"status":"","uids":[10,10],"pid":0}`
-	if e != fmt.Sprintf("%v", v) {
+	assert.JSONEqf(t, e, fmt.Sprintf("%v", v), "NetConnectionStat string is invalid: %v", v)
-		t.Errorf("NetConnectionStat string is invalid: %v", v)
-	}
 }
 
 func TestIOCountersAll(t *testing.T) {
 	v, err := IOCounters(false)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "Could not get NetIOCounters: %v", err)
-		t.Errorf("Could not get NetIOCounters: %v", err)
-	}
 	per, err := IOCounters(true)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "Could not get NetIOCounters: %v", err)
-		t.Errorf("Could not get NetIOCounters: %v", err)
+	assert.Lenf(t, v, 1, "Could not get NetIOCounters: %v", v)
-	}
+	assert.Equalf(t, "all", v[0].Name, "Invalid NetIOCounters: %v", v)
-	if len(v) != 1 {
-		t.Errorf("Could not get NetIOCounters: %v", v)
-	}
-	if v[0].Name != "all" {
-		t.Errorf("Invalid NetIOCounters: %v", v)
-	}
 	var pr uint64
 	for _, p := range per {
 		pr += p.PacketsRecv
@@ -106,16 +93,10 @@ func TestIOCountersAll(t *testing.T) {
 func TestIOCountersPerNic(t *testing.T) {
 	v, err := IOCounters(true)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "Could not get NetIOCounters: %v", err)
-		t.Errorf("Could not get NetIOCounters: %v", err)
+	assert.NotEmptyf(t, v, "Could not get NetIOCounters: %v", v)
-	}
-	if len(v) == 0 {
-		t.Errorf("Could not get NetIOCounters: %v", v)
-	}
 	for _, vv := range v {
-		if vv.Name == "" {
+		assert.NotEmptyf(t, vv.Name, "Invalid NetIOCounters: %v", vv)
-			t.Errorf("Invalid NetIOCounters: %v", vv)
-		}
 	}
 }
 
@@ -134,74 +115,44 @@ func TestGetNetIOCountersAll(t *testing.T) {
 		},
 	}
 	ret := getIOCountersAll(n)
-	if len(ret) != 1 {
+	assert.Lenf(t, ret, 1, "invalid return count")
-		t.Errorf("invalid return count")
+	assert.Equalf(t, "all", ret[0].Name, "invalid return name")
-	}
+	assert.Equalf(t, uint64(20), ret[0].BytesRecv, "invalid count bytesrecv")
-	if ret[0].Name != "all" {
+	assert.Equalf(t, uint64(10), ret[0].Errin, "invalid count errin")
-		t.Errorf("invalid return name")
-	}
-	if ret[0].BytesRecv != 20 {
-		t.Errorf("invalid count bytesrecv")
-	}
-	if ret[0].Errin != 10 {
-		t.Errorf("invalid count errin")
-	}
 }
 
 func TestInterfaces(t *testing.T) {
 	v, err := Interfaces()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "Could not get NetInterfaceStat: %v", err)
-		t.Errorf("Could not get NetInterfaceStat: %v", err)
+	assert.NotEmptyf(t, v, "Could not get NetInterfaceStat: %v", err)
-	}
-	if len(v) == 0 {
-		t.Errorf("Could not get NetInterfaceStat: %v", err)
-	}
 	for _, vv := range v {
-		if vv.Name == "" {
+		assert.NotEmptyf(t, vv.Name, "Invalid NetInterface: %v", vv)
-			t.Errorf("Invalid NetInterface: %v", vv)
-		}
 	}
 }
 
 func TestProtoCountersStatsAll(t *testing.T) {
 	v, err := ProtoCounters(nil)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "Could not get NetProtoCounters: %v", err)
-		t.Fatalf("Could not get NetProtoCounters: %v", err)
+	require.NotEmptyf(t, v, "Could not get NetProtoCounters: %v", err)
-	}
-	if len(v) == 0 {
-		t.Fatalf("Could not get NetProtoCounters: %v", err)
-	}
 	for _, vv := range v {
-		if vv.Protocol == "" {
+		assert.NotEmptyf(t, vv.Protocol, "Invalid NetProtoCountersStat: %v", vv)
-			t.Errorf("Invalid NetProtoCountersStat: %v", vv)
+		assert.NotEmptyf(t, vv.Stats, "Invalid NetProtoCountersStat: %v", vv)
-		}
-		if len(vv.Stats) == 0 {
-			t.Errorf("Invalid NetProtoCountersStat: %v", vv)
-		}
 	}
 }
 
 func TestProtoCountersStats(t *testing.T) {
 	v, err := ProtoCounters([]string{"tcp", "ip"})
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "Could not get NetProtoCounters: %v", err)
-		t.Fatalf("Could not get NetProtoCounters: %v", err)
+	require.NotEmptyf(t, v, "Could not get NetProtoCounters: %v", err)
-	}
+	require.Lenf(t, v, 2, "Go incorrect number of NetProtoCounters: %v", err)
-	if len(v) == 0 {
-		t.Fatalf("Could not get NetProtoCounters: %v", err)
-	}
-	if len(v) != 2 {
-		t.Fatalf("Go incorrect number of NetProtoCounters: %v", err)
-	}
 	for _, vv := range v {
 		if vv.Protocol != "tcp" && vv.Protocol != "ip" {
 			t.Errorf("Invalid NetProtoCountersStat: %v", vv)
 		}
-		if len(vv.Stats) == 0 {
+		assert.NotEmptyf(t, vv.Stats, "Invalid NetProtoCountersStat: %v", vv)
-			t.Errorf("Invalid NetProtoCountersStat: %v", vv)
-		}
 	}
 }
 
@@ -212,16 +163,10 @@ func TestConnections(t *testing.T) {
 
 	v, err := Connections("inet")
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "could not get NetConnections: %v", err)
-		t.Errorf("could not get NetConnections: %v", err)
+	assert.NotEmptyf(t, v, "could not get NetConnections: %v", v)
-	}
-	if len(v) == 0 {
-		t.Errorf("could not get NetConnections: %v", v)
-	}
 	for _, vv := range v {
-		if vv.Family == 0 {
+		assert.NotZerof(t, vv.Family, "invalid NetConnections: %v", vv)
-			t.Errorf("invalid NetConnections: %v", vv)
-		}
 	}
 }
 
@@ -239,16 +184,10 @@ func TestFilterCounters(t *testing.T) {
 
 	v, err := FilterCounters()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "could not get NetConnections: %v", err)
-		t.Errorf("could not get NetConnections: %v", err)
+	assert.NotEmptyf(t, v, "could not get NetConnections: %v", v)
-	}
-	if len(v) == 0 {
-		t.Errorf("could not get NetConnections: %v", v)
-	}
 	for _, vv := range v {
-		if vv.ConnTrackMax == 0 {
+		assert.NotZerof(t, vv.ConnTrackMax, "nf_connTrackMax needs to be greater than zero: %v", vv)
-			t.Errorf("nf_connTrackMax needs to be greater than zero: %v", vv)
-		}
 	}
 }
 
@@ -263,13 +202,9 @@ func TestInterfaceStatString(t *testing.T) {
 	}
 
 	s := fmt.Sprintf("%v", v)
-	if s != `{"index":0,"mtu":1500,"name":"eth0","hardwareAddr":"01:23:45:67:89:ab","flags":["up","down"],"addrs":[{"addr":"1.2.3.4"},{"addr":"5.6.7.8"}]}` {
+	assert.JSONEqf(t, `{"index":0,"mtu":1500,"name":"eth0","hardwareAddr":"01:23:45:67:89:ab","flags":["up","down"],"addrs":[{"addr":"1.2.3.4"},{"addr":"5.6.7.8"}]}`, s, "InterfaceStat string is invalid: %v", s)
-		t.Errorf("InterfaceStat string is invalid: %v", s)
-	}
 
 	list := InterfaceStatList{v, v}
 	s = fmt.Sprintf("%v", list)
-	if s != `[{"index":0,"mtu":1500,"name":"eth0","hardwareAddr":"01:23:45:67:89:ab","flags":["up","down"],"addrs":[{"addr":"1.2.3.4"},{"addr":"5.6.7.8"}]},{"index":0,"mtu":1500,"name":"eth0","hardwareAddr":"01:23:45:67:89:ab","flags":["up","down"],"addrs":[{"addr":"1.2.3.4"},{"addr":"5.6.7.8"}]}]` {
+	assert.JSONEqf(t, `[{"index":0,"mtu":1500,"name":"eth0","hardwareAddr":"01:23:45:67:89:ab","flags":["up","down"],"addrs":[{"addr":"1.2.3.4"},{"addr":"5.6.7.8"}]},{"index":0,"mtu":1500,"name":"eth0","hardwareAddr":"01:23:45:67:89:ab","flags":["up","down"],"addrs":[{"addr":"1.2.3.4"},{"addr":"5.6.7.8"}]}]`, s, "InterfaceStatList string is invalid: %v", s)
-		t.Errorf("InterfaceStatList string is invalid: %v", s)
-	}
 }

process/process_linux_test.go

@@ -47,7 +47,7 @@ func TestSplitProcStat(t *testing.T) {
 			for _, idx := range consideredFields {
 				expected := strconv.Itoa(idx)
 				parsed := parsedStatLine[idx]
-				assert.Equal(
+				assert.Equalf(
 					t, expected, parsed,
 					"field %d (index from 1 as in man proc) must be %q but %q is received",
 					idx, expected, parsed,
@@ -59,9 +59,7 @@ func TestSplitProcStat(t *testing.T) {
 
 func TestSplitProcStat_fromFile(t *testing.T) {
 	pids, err := os.ReadDir("testdata/linux/")
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
-	}
 	t.Setenv("HOST_PROC", "testdata/linux")
 	for _, pid := range pids {
 		pid, err := strconv.ParseInt(pid.Name(), 0, 32)
@@ -95,9 +93,7 @@ func TestSplitProcStat_fromFile(t *testing.T) {
 
 func TestFillFromCommWithContext(t *testing.T) {
 	pids, err := os.ReadDir("testdata/linux/")
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
-	}
 	t.Setenv("HOST_PROC", "testdata/linux")
 	for _, pid := range pids {
 		pid, err := strconv.ParseInt(pid.Name(), 0, 32)
@@ -108,17 +104,13 @@ func TestFillFromCommWithContext(t *testing.T) {
 			continue
 		}
 		p, _ := NewProcess(int32(pid))
-		if err := p.fillFromCommWithContext(context.Background()); err != nil {
+		assert.NoError(t, p.fillFromCommWithContext(context.Background()))
-			t.Error(err)
-		}
 	}
 }
 
 func TestFillFromStatusWithContext(t *testing.T) {
 	pids, err := os.ReadDir("testdata/linux/")
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
-	}
 	t.Setenv("HOST_PROC", "testdata/linux")
 	for _, pid := range pids {
 		pid, err := strconv.ParseInt(pid.Name(), 0, 32)
@@ -129,9 +121,7 @@ func TestFillFromStatusWithContext(t *testing.T) {
 			continue
 		}
 		p, _ := NewProcess(int32(pid))
-		if err := p.fillFromStatus(); err != nil {
+		assert.NoError(t, p.fillFromStatus())
-			t.Error(err)
-		}
 	}
 }
 
@@ -155,9 +145,7 @@ func Benchmark_fillFromStatusWithContext(b *testing.B) {
 
 func TestFillFromTIDStatWithContext_lx_brandz(t *testing.T) {
 	pids, err := os.ReadDir("testdata/lx_brandz/")
-	if err != nil {
+	require.NoError(t, err)
-		t.Error(err)
-	}
 	t.Setenv("HOST_PROC", "testdata/lx_brandz")
 	for _, pid := range pids {
 		pid, err := strconv.ParseInt(pid.Name(), 0, 32)
@@ -169,9 +157,7 @@ func TestFillFromTIDStatWithContext_lx_brandz(t *testing.T) {
 		}
 		p, _ := NewProcess(int32(pid))
 		_, _, cpuTimes, _, _, _, _, err := p.fillFromTIDStat(-1)
-		if err != nil {
+		require.NoError(t, err)
-			t.Error(err)
-		}
 		assert.Zero(t, cpuTimes.Iowait)
 	}
 }

process/process_posix_test.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	"golang.org/x/sys/unix"
 )
 
@@ -14,8 +15,5 @@ func Test_SendSignal(t *testing.T) {
 	checkPid := os.Getpid()
 
 	p, _ := NewProcess(int32(checkPid))
-	err := p.SendSignal(unix.SIGCONT)
+	assert.NoErrorf(t, p.SendSignal(unix.SIGCONT), "send signal")
-	if err != nil {
-		t.Errorf("send signal %v", err)
-	}
 }

process/process_race_test.go

@@ -6,6 +6,8 @@ package process
 import (
 	"sync"
 	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
 func TestPpid_Race(t *testing.T) {
@@ -18,9 +20,7 @@ func TestPpid_Race(t *testing.T) {
 			ppid, err := p.Ppid()
 			wg.Done()
 			skipIfNotImplementedErr(t, err)
-			if err != nil {
+			require.NoError(t, err, "Ppid() failed, %v", err)
-				t.Errorf("Ppid() failed, %v", err)
-			}
 
 			if j == 9 {
 				t.Logf("Ppid(): %d", ppid)

process/process_test.go

@@ -42,12 +42,8 @@ func testGetProcess() Process {
 func TestPids(t *testing.T) {
 	ret, err := Pids()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, ret, "could not get pids %v", ret)
-	}
-	if len(ret) == 0 {
-		t.Errorf("could not get pids %v", ret)
-	}
 }
 
 func TestPid_exists(t *testing.T) {
@@ -55,13 +51,9 @@ func TestPid_exists(t *testing.T) {
 
 	ret, err := PidExists(int32(checkPid))
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 
-	if !ret {
+	assert.Truef(t, ret, "could not get process exists: %v", ret)
-		t.Errorf("could not get process exists: %v", ret)
-	}
 }
 
 func TestNewProcess(t *testing.T) {
@@ -69,14 +61,10 @@ func TestNewProcess(t *testing.T) {
 
 	ret, err := NewProcess(int32(checkPid))
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	empty := &Process{}
 	if runtime.GOOS != "windows" { // Windows pid is 0
-		if empty == ret {
+		assert.NotSamef(t, empty, ret, "error %v", ret)
-			t.Errorf("error %v", ret)
-		}
 	}
 }
 
@@ -85,35 +73,23 @@ func TestMemoryMaps(t *testing.T) {
 
 	ret, err := NewProcess(int32(checkPid))
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 
 	// ungrouped memory maps
 	mmaps, err := ret.MemoryMaps(false)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "memory map get error %v", err)
-		t.Errorf("memory map get error %v", err)
-	}
 	empty := MemoryMapsStat{}
 	for _, m := range *mmaps {
-		if m == empty {
+		assert.NotEqualf(t, m, empty, "memory map get error %v", m)
-			t.Errorf("memory map get error %v", m)
-		}
 	}
 
 	// grouped memory maps
 	mmaps, err = ret.MemoryMaps(true)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "memory map get error %v", err)
-		t.Errorf("memory map get error %v", err)
+	assert.Lenf(t, *mmaps, 1, "grouped memory maps length (%v) is not equal to 1", len(*mmaps))
-	}
+	assert.NotEqualf(t, (*mmaps)[0], empty, "memory map is empty")
-	if len(*mmaps) != 1 {
-		t.Errorf("grouped memory maps length (%v) is not equal to 1", len(*mmaps))
-	}
-	if (*mmaps)[0] == empty {
-		t.Errorf("memory map is empty")
-	}
 }
 
 func TestMemoryInfo(t *testing.T) {
@@ -121,9 +97,7 @@ func TestMemoryInfo(t *testing.T) {
 
 	v, err := p.MemoryInfo()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting memory info error %v", err)
-		t.Errorf("getting memory info error %v", err)
-	}
 	empty := MemoryInfoStat{}
 	if v == nil || *v == empty {
 		t.Errorf("could not get memory info %v", v)
@@ -135,12 +109,8 @@ func TestCmdLine(t *testing.T) {
 
 	v, err := p.Cmdline()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting cmdline error %v", err)
-		t.Errorf("getting cmdline error %v", err)
+	assert.Containsf(t, v, "process.test", "invalid cmd line %v", v)
-	}
-	if !strings.Contains(v, "process.test") {
-		t.Errorf("invalid cmd line %v", v)
-	}
 }
 
 func TestCmdLineSlice(t *testing.T) {
@@ -148,12 +118,8 @@ func TestCmdLineSlice(t *testing.T) {
 
 	v, err := p.CmdlineSlice()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting cmdline slice error %v", err)
-		t.Fatalf("getting cmdline slice error %v", err)
+	assert.Truef(t, reflect.DeepEqual(v, os.Args), "returned cmdline slice not as expected:\nexp: %v\ngot: %v", os.Args, v)
-	}
-	if !reflect.DeepEqual(v, os.Args) {
-		t.Errorf("returned cmdline slice not as expected:\nexp: %v\ngot: %v", os.Args, v)
-	}
 }
 
 func TestPpid(t *testing.T) {
@@ -161,16 +127,10 @@ func TestPpid(t *testing.T) {
 
 	v, err := p.Ppid()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting ppid error %v", err)
-		t.Errorf("getting ppid error %v", err)
+	assert.NotZerof(t, v, "return value is 0 %v", v)
-	}
-	if v == 0 {
-		t.Errorf("return value is 0 %v", v)
-	}
 	expected := os.Getppid()
-	if v != int32(expected) {
+	assert.Equalf(t, int32(expected), v, "return value is %v, expected %v", v, expected)
-		t.Errorf("return value is %v, expected %v", v, expected)
-	}
 }
 
 func TestStatus(t *testing.T) {
@@ -178,12 +138,8 @@ func TestStatus(t *testing.T) {
 
 	v, err := p.Status()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting status error %v", err)
-		t.Errorf("getting status error %v", err)
+	assert.NotEmptyf(t, v, "could not get state")
-	}
-	if len(v) == 0 {
-		t.Errorf("could not get state")
-	}
 	if v[0] != Running && v[0] != Sleep {
 		t.Errorf("got wrong state, %v", v)
 	}
@@ -194,9 +150,7 @@ func TestTerminal(t *testing.T) {
 
 	_, err := p.Terminal()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	assert.NoErrorf(t, err, "getting terminal error %v", err)
-		t.Errorf("getting terminal error %v", err)
-	}
 }
 
 func TestIOCounters(t *testing.T) {
@@ -204,14 +158,9 @@ func TestIOCounters(t *testing.T) {
 
 	v, err := p.IOCounters()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting iocounter error %v", err)
-		t.Errorf("getting iocounter error %v", err)
-		return
-	}
 	empty := &IOCountersStat{}
-	if v == empty {
+	assert.NotSamef(t, v, empty, "error %v", v)
-		t.Errorf("error %v", v)
-	}
 }
 
 func TestNumCtx(t *testing.T) {
@@ -219,10 +168,7 @@ func TestNumCtx(t *testing.T) {
 
 	_, err := p.NumCtxSwitches()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	assert.NoErrorf(t, err, "getting numctx error %v", err)
-		t.Errorf("getting numctx error %v", err)
-		return
-	}
 }
 
 func TestNice(t *testing.T) {
@@ -235,9 +181,7 @@ func TestNice(t *testing.T) {
 
 	n, err := p.Nice()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting nice error %v", err)
-		t.Errorf("getting nice error %v", err)
-	}
 	if runtime.GOOS != "windows" && n != 0 && n != 20 && n != 8 {
 		t.Errorf("invalid nice: %d", n)
 	}
@@ -248,15 +192,10 @@ func TestGroups(t *testing.T) {
 
 	v, err := p.Groups()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting groups error %v", err)
-		t.Errorf("getting groups error %v", err)
-	}
 	if len(v) == 0 {
 		t.Skip("Groups is empty")
 	}
-	if v[0] < 0 {
-		t.Errorf("invalid Groups: %v", v)
-	}
 }
 
 func TestNumThread(t *testing.T) {
@@ -264,12 +203,8 @@ func TestNumThread(t *testing.T) {
 
 	n, err := p.NumThreads()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting NumThread error %v", err)
-		t.Errorf("getting NumThread error %v", err)
+	assert.GreaterOrEqualf(t, n, int32(0), "invalid NumThread: %d", n)
-	}
-	if n < 0 {
-		t.Errorf("invalid NumThread: %d", n)
-	}
 }
 
 func TestThreads(t *testing.T) {
@@ -277,21 +212,13 @@ func TestThreads(t *testing.T) {
 
 	n, err := p.NumThreads()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting NumThread error %v", err)
-		t.Errorf("getting NumThread error %v", err)
+	assert.GreaterOrEqualf(t, n, int32(0), "invalid NumThread: %d", n)
-	}
-	if n < 0 {
-		t.Errorf("invalid NumThread: %d", n)
-	}
 
 	ts, err := p.Threads()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting Threads error %v", err)
-		t.Errorf("getting Threads error %v", err)
+	assert.Equalf(t, len(ts), int(n), "unexpected number of threads: %v vs %v", len(ts), n)
-	}
-	if len(ts) != int(n) {
-		t.Errorf("unexpected number of threads: %v vs %v", len(ts), n)
-	}
 }
 
 func TestName(t *testing.T) {
@@ -299,40 +226,28 @@ func TestName(t *testing.T) {
 
 	n, err := p.Name()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting name error %v", err)
-		t.Errorf("getting name error %v", err)
+	assert.Containsf(t, n, "process.test", "invalid Name %s", n)
-	}
-	if !strings.Contains(n, "process.test") {
-		t.Errorf("invalid Name %s", n)
-	}
 }
 
 // #nosec G204
 func TestLong_Name_With_Spaces(t *testing.T) {
 	tmpdir, err := os.MkdirTemp("", "")
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp dir %v", err)
-		t.Fatalf("unable to create temp dir %v", err)
-	}
 	defer os.RemoveAll(tmpdir) // clean up
 	tmpfilepath := filepath.Join(tmpdir, "loooong name with spaces.go")
 	tmpfile, err := os.Create(tmpfilepath)
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp file %v", err)
-		t.Fatalf("unable to create temp file %v", err)
-	}
 
 	tmpfilecontent := []byte("package main\nimport(\n\"time\"\n)\nfunc main(){\nfor range time.Tick(time.Second) {}\n}")
 	if _, err := tmpfile.Write(tmpfilecontent); err != nil {
 		tmpfile.Close()
 		t.Fatalf("unable to write temp file %v", err)
 	}
-	if err := tmpfile.Close(); err != nil {
+	require.NoErrorf(t, tmpfile.Close(), "unable to close temp file")
-		t.Fatalf("unable to close temp file %v", err)
-	}
 
 	err = exec.Command("go", "build", "-o", tmpfile.Name()+".exe", tmpfile.Name()).Run()
-	if err != nil {
+	require.NoErrorf(t, err, "unable to build temp file %v", err)
-		t.Fatalf("unable to build temp file %v", err)
-	}
 
 	cmd := exec.Command(tmpfile.Name() + ".exe")
 
@@ -344,42 +259,30 @@ func TestLong_Name_With_Spaces(t *testing.T) {
 
 	n, err := p.Name()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting name error %v", err)
-		t.Fatalf("getting name error %v", err)
-	}
 	basename := filepath.Base(tmpfile.Name() + ".exe")
-	if basename != n {
+	require.Equalf(t, basename, n, "%s != %s", basename, n)
-		t.Fatalf("%s != %s", basename, n)
-	}
 	cmd.Process.Kill()
 }
 
 // #nosec G204
 func TestLong_Name(t *testing.T) {
 	tmpdir, err := os.MkdirTemp("", "")
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp dir %v", err)
-		t.Fatalf("unable to create temp dir %v", err)
-	}
 	defer os.RemoveAll(tmpdir) // clean up
 	tmpfilepath := filepath.Join(tmpdir, "looooooooooooooooooooong.go")
 	tmpfile, err := os.Create(tmpfilepath)
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp file %v", err)
-		t.Fatalf("unable to create temp file %v", err)
-	}
 
 	tmpfilecontent := []byte("package main\nimport(\n\"time\"\n)\nfunc main(){\nfor range time.Tick(time.Second) {}\n}")
 	if _, err := tmpfile.Write(tmpfilecontent); err != nil {
 		tmpfile.Close()
 		t.Fatalf("unable to write temp file %v", err)
 	}
-	if err := tmpfile.Close(); err != nil {
+	require.NoErrorf(t, tmpfile.Close(), "unable to close temp file")
-		t.Fatalf("unable to close temp file %v", err)
-	}
 
 	err = exec.Command("go", "build", "-o", tmpfile.Name()+".exe", tmpfile.Name()).Run()
-	if err != nil {
+	require.NoErrorf(t, err, "unable to build temp file %v", err)
-		t.Fatalf("unable to build temp file %v", err)
-	}
 
 	cmd := exec.Command(tmpfile.Name() + ".exe")
 
@@ -391,13 +294,9 @@ func TestLong_Name(t *testing.T) {
 
 	n, err := p.Name()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting name error %v", err)
-		t.Fatalf("getting name error %v", err)
-	}
 	basename := filepath.Base(tmpfile.Name() + ".exe")
-	if basename != n {
+	require.Equalf(t, basename, n, "%s != %s", basename, n)
-		t.Fatalf("%s != %s", basename, n)
-	}
 	cmd.Process.Kill()
 }
 
@@ -414,26 +313,18 @@ func TestName_Against_Python(t *testing.T) {
 	}
 
 	tmpdir, err := os.MkdirTemp("", "")
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp dir %v", err)
-		t.Fatalf("unable to create temp dir %v", err)
-	}
 	defer os.RemoveAll(tmpdir) // clean up
 	tmpfilepath := filepath.Join(tmpdir, "looooooooooooooooooooong.py")
 	tmpfile, err := os.Create(tmpfilepath)
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp file %v", err)
-		t.Fatalf("unable to create temp file %v", err)
-	}
 	tmpfilecontent := []byte("#!" + py3Path + "\nimport psutil, time\nprint(psutil.Process().name(), flush=True)\nwhile True:\n\ttime.sleep(1)")
 	if _, err := tmpfile.Write(tmpfilecontent); err != nil {
 		tmpfile.Close()
 		t.Fatalf("unable to write temp file %v", err)
 	}
-	if err := tmpfile.Chmod(0o744); err != nil {
+	require.NoErrorf(t, tmpfile.Chmod(0o744), "unable to chmod u+x temp file")
-		t.Fatalf("unable to chmod u+x temp file %v", err)
+	require.NoErrorf(t, tmpfile.Close(), "unable to close temp file")
-	}
-	if err := tmpfile.Close(); err != nil {
-		t.Fatalf("unable to close temp file %v", err)
-	}
 	cmd := exec.Command(tmpfilepath)
 	outPipe, _ := cmd.StdoutPipe()
 	scanner := bufio.NewScanner(outPipe)
@@ -444,17 +335,11 @@ func TestName_Against_Python(t *testing.T) {
 	t.Logf("pyName %s", pyName)
 	p, err := NewProcess(int32(cmd.Process.Pid))
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting process error %v", err)
-		t.Fatalf("getting process error %v", err)
-	}
 	name, err := p.Name()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting name error %v", err)
-		t.Fatalf("getting name error %v", err)
+	require.Equalf(t, pyName, name, "psutil and gopsutil process.Name() results differ: expected %s, got %s", pyName, name)
-	}
-	if pyName != name {
-		t.Fatalf("psutil and gopsutil process.Name() results differ: expected %s, got %s", pyName, name)
-	}
 }
 
 func TestExe(t *testing.T) {
@@ -462,33 +347,23 @@ func TestExe(t *testing.T) {
 
 	n, err := p.Exe()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting Exe error %v", err)
-		t.Errorf("getting Exe error %v", err)
+	assert.Containsf(t, n, "process.test", "invalid Exe %s", n)
-	}
-	if !strings.Contains(n, "process.test") {
-		t.Errorf("invalid Exe %s", n)
-	}
 }
 
 func TestCpuPercent(t *testing.T) {
 	p := testGetProcess()
 	_, err := p.Percent(0)
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 	duration := time.Duration(1000) * time.Microsecond
 	time.Sleep(duration)
 	percent, err := p.Percent(0)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 
 	numcpu := runtime.NumCPU()
 	//	if percent < 0.0 || percent > 100.0*float64(numcpu) { // TODO
-	if percent < 0.0 {
+	require.GreaterOrEqualf(t, percent, 0.0, "CPUPercent value is invalid: %f, %d", percent, numcpu)
-		t.Fatalf("CPUPercent value is invalid: %f, %d", percent, numcpu)
-	}
 }
 
 func TestCpuPercentLoop(t *testing.T) {
@@ -499,13 +374,9 @@ func TestCpuPercentLoop(t *testing.T) {
 		duration := time.Duration(100) * time.Microsecond
 		percent, err := p.Percent(duration)
 		skipIfNotImplementedErr(t, err)
-		if err != nil {
+		require.NoError(t, err)
-			t.Errorf("error %v", err)
-		}
 		//	if percent < 0.0 || percent > 100.0*float64(numcpu) { // TODO
-		if percent < 0.0 {
+		require.GreaterOrEqualf(t, percent, 0.0, "CPUPercent value is invalid: %f, %d", percent, numcpu)
-			t.Fatalf("CPUPercent value is invalid: %f, %d", percent, numcpu)
-		}
 	}
 }
 
@@ -518,20 +389,14 @@ func TestCreateTime(t *testing.T) {
 
 	c, err := p.CreateTime()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
-	}
 
-	if c < 1420000000 {
+	assert.GreaterOrEqualf(t, c, 1420000000, "process created time is wrong.")
-		t.Errorf("process created time is wrong.")
-	}
 
 	gotElapsed := time.Since(time.Unix(int64(c/1000), 0))
 	maxElapsed := time.Duration(20 * time.Second)
 
-	if gotElapsed >= maxElapsed {
+	assert.Lessf(t, gotElapsed, maxElapsed, "this process has not been running for %v", gotElapsed)
-		t.Errorf("this process has not been running for %v", gotElapsed)
-	}
 }
 
 func TestParent(t *testing.T) {
@@ -539,36 +404,24 @@ func TestParent(t *testing.T) {
 
 	c, err := p.Parent()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Fatalf("error %v", err)
+	require.NotNilf(t, c, "could not get parent")
-	}
+	require.NotZerof(t, c.Pid, "wrong parent pid")
-	if c == nil {
-		t.Fatalf("could not get parent")
-	}
-	if c.Pid == 0 {
-		t.Fatalf("wrong parent pid")
-	}
 }
 
 func TestConnections(t *testing.T) {
 	p := testGetProcess()
 
 	addr, err := net.ResolveTCPAddr("tcp", "localhost:0") // dynamically get a random open port from OS
-	if err != nil {
+	require.NoErrorf(t, err, "unable to resolve localhost: %v", err)
-		t.Fatalf("unable to resolve localhost: %v", err)
-	}
 	l, err := net.ListenTCP(addr.Network(), addr)
-	if err != nil {
+	require.NoErrorf(t, err, "unable to listen on %v: %v", addr, err)
-		t.Fatalf("unable to listen on %v: %v", addr, err)
-	}
 	defer l.Close()
 
 	tcpServerAddr := l.Addr().String()
 	tcpServerAddrIP := strings.Split(tcpServerAddr, ":")[0]
 	tcpServerAddrPort, err := strconv.ParseUint(strings.Split(tcpServerAddr, ":")[1], 10, 32)
-	if err != nil {
+	require.NoErrorf(t, err, "unable to parse tcpServerAddr port: %v", err)
-		t.Fatalf("unable to parse tcpServerAddr port: %v", err)
-	}
 
 	serverEstablished := make(chan struct{})
 	go func() { // TCP listening goroutine
@@ -586,9 +439,7 @@ func TestConnections(t *testing.T) {
 	}()
 
 	conn, err := net.Dial("tcp", tcpServerAddr)
-	if err != nil {
+	require.NoErrorf(t, err, "unable to dial %v: %v", tcpServerAddr, err)
-		t.Fatalf("unable to dial %v: %v", tcpServerAddr, err)
-	}
 	defer conn.Close()
 
 	// Rarely the call to net.Dial returns before the server connection is
@@ -597,19 +448,13 @@ func TestConnections(t *testing.T) {
 
 	c, err := p.Connections()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Fatalf("error %v", err)
+	require.NotEmptyf(t, c, "no connections found")
-	}
-	if len(c) == 0 {
-		t.Fatal("no connections found")
-	}
 
 	serverConnections := 0
 	for _, connection := range c {
 		if connection.Laddr.IP == tcpServerAddrIP && connection.Laddr.Port == uint32(tcpServerAddrPort) && connection.Raddr.Port != 0 {
-			if connection.Status != "ESTABLISHED" {
+			require.Equalf(t, "ESTABLISHED", connection.Status, "expected server connection to be ESTABLISHED, have %+v", connection)
-				t.Fatalf("expected server connection to be ESTABLISHED, have %+v", connection)
-			}
 			serverConnections++
 		}
 	}
@@ -617,20 +462,14 @@ func TestConnections(t *testing.T) {
 	clientConnections := 0
 	for _, connection := range c {
 		if connection.Raddr.IP == tcpServerAddrIP && connection.Raddr.Port == uint32(tcpServerAddrPort) {
-			if connection.Status != "ESTABLISHED" {
+			require.Equalf(t, "ESTABLISHED", connection.Status, "expected client connection to be ESTABLISHED, have %+v", connection)
-				t.Fatalf("expected client connection to be ESTABLISHED, have %+v", connection)
-			}
 			clientConnections++
 		}
 	}
-
+	// two established connections, one for the server, the other for the client
-	if serverConnections != 1 { // two established connections, one for the server, the other for the client
+	require.Equalf(t, 1, serverConnections, "expected 1 server connection, have %d.\nDetails: %+v", serverConnections, c)
-		t.Fatalf("expected 1 server connection, have %d.\nDetails: %+v", serverConnections, c)
+	// two established connections, one for the server, the other for the client
-	}
+	require.Equalf(t, 1, clientConnections, "expected 1 server connection, have %d.\nDetails: %+v", clientConnections, c)
-
-	if clientConnections != 1 { // two established connections, one for the server, the other for the client
-		t.Fatalf("expected 1 server connection, have %d.\nDetails: %+v", clientConnections, c)
-	}
 }
 
 func TestChildren(t *testing.T) {
@@ -647,12 +486,8 @@ func TestChildren(t *testing.T) {
 
 	c, err := p.Children()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Fatalf("error %v", err)
+	require.NotEmptyf(t, c, "children is empty")
-	}
-	if len(c) == 0 {
-		t.Fatalf("children is empty")
-	}
 	found := false
 	for _, child := range c {
 		if child.Pid == int32(cmd.Process.Pid) {
@@ -660,9 +495,7 @@ func TestChildren(t *testing.T) {
 			break
 		}
 	}
-	if !found {
+	assert.Truef(t, found, "could not find child %d", cmd.Process.Pid)
-		t.Errorf("could not find child %d", cmd.Process.Pid)
-	}
 }
 
 func TestUsername(t *testing.T) {
@@ -706,8 +539,8 @@ func TestCPUTimes(t *testing.T) {
 	measuredElapsed := cpuTimes1.Total() - cpuTimes0.Total()
 	message := fmt.Sprintf("Measured %fs != spun time of %fs\ncpuTimes0=%v\ncpuTimes1=%v",
 		measuredElapsed, spinSeconds, cpuTimes0, cpuTimes1)
-	assert.Greater(t, measuredElapsed, float64(spinSeconds)/5, message)
+	assert.Greaterf(t, measuredElapsed, float64(spinSeconds)/5, message)
-	assert.Less(t, measuredElapsed, float64(spinSeconds)*5, message)
+	assert.Lessf(t, measuredElapsed, float64(spinSeconds)*5, message)
 }
 
 func TestOpenFiles(t *testing.T) {
@@ -763,49 +596,33 @@ func TestIsRunning(t *testing.T) {
 	require.NoError(t, err)
 	running, err := p.IsRunning()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "IsRunning error: %v", err)
-		t.Fatalf("IsRunning error: %v", err)
+	require.Truef(t, running, "process should be found running")
-	}
-	if !running {
-		t.Fatalf("process should be found running")
-	}
 	cmd.Wait()
 	running, err = p.IsRunning()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "IsRunning error: %v", err)
-		t.Fatalf("IsRunning error: %v", err)
+	require.Falsef(t, running, "process should NOT be found running")
-	}
-	if running {
-		t.Fatalf("process should NOT be found running")
-	}
 }
 
 // #nosec G204
 func TestEnviron(t *testing.T) {
 	tmpdir, err := os.MkdirTemp("", "")
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp dir %v", err)
-		t.Fatalf("unable to create temp dir %v", err)
-	}
 	defer os.RemoveAll(tmpdir) // clean up
 	tmpfilepath := filepath.Join(tmpdir, "test.go")
 	tmpfile, err := os.Create(tmpfilepath)
-	if err != nil {
+	require.NoErrorf(t, err, "unable to create temp file %v", err)
-		t.Fatalf("unable to create temp file %v", err)
-	}
 
 	tmpfilecontent := []byte("package main\nimport(\n\"time\"\n)\nfunc main(){\nfor range time.Tick(time.Second) {}\n}")
 	if _, err := tmpfile.Write(tmpfilecontent); err != nil {
 		tmpfile.Close()
 		t.Fatalf("unable to write temp file %v", err)
 	}
-	if err := tmpfile.Close(); err != nil {
+	require.NoErrorf(t, tmpfile.Close(), "unable to close temp file")
-		t.Fatalf("unable to close temp file %v", err)
-	}
 
 	err = exec.Command("go", "build", "-o", tmpfile.Name()+".exe", tmpfile.Name()).Run()
-	if err != nil {
+	require.NoErrorf(t, err, "unable to build temp file %v", err)
-		t.Fatalf("unable to build temp file %v", err)
-	}
 
 	cmd := exec.Command(tmpfile.Name() + ".exe")
 
@@ -820,9 +637,7 @@ func TestEnviron(t *testing.T) {
 
 	envs, err := p.Environ()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting environ error %v", err)
-		t.Errorf("getting environ error %v", err)
-	}
 	var envvarFound bool
 	for _, envvar := range envs {
 		if envvar == "testkey=envvalue" {
@@ -830,9 +645,7 @@ func TestEnviron(t *testing.T) {
 			break
 		}
 	}
-	if !envvarFound {
+	assert.Truef(t, envvarFound, "environment variable not found")
-		t.Error("environment variable not found")
-	}
 }
 
 func TestCwd(t *testing.T) {
@@ -842,9 +655,7 @@ func TestCwd(t *testing.T) {
 	process, _ := NewProcess(int32(myPid))
 	pidCwd, err := process.Cwd()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoErrorf(t, err, "getting cwd error %v", err)
-		t.Fatalf("getting cwd error %v", err)
-	}
 	pidCwd = strings.TrimSuffix(pidCwd, string(os.PathSeparator))
 	assert.Equal(t, currentWorkingDirectory, pidCwd)
 

sensors/sensors_test.go

@@ -8,6 +8,9 @@ import (
 	"os"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/shirou/gopsutil/v4/internal/common"
 )
 
@@ -19,9 +22,7 @@ func TestTemperatureStat_String(t *testing.T) {
 		Critical:    0.1,
 	}
 	s := `{"sensorKey":"CPU","temperature":1.1,"sensorHigh":30.1,"sensorCritical":0.1}`
-	if s != fmt.Sprintf("%v", v) {
+	assert.Equalf(t, s, fmt.Sprintf("%v", v), "TemperatureStat string is invalid, %v", fmt.Sprintf("%v", v))
-		t.Errorf("TemperatureStat string is invalid, %v", fmt.Sprintf("%v", v))
-	}
 }
 
 func skipIfNotImplementedErr(t *testing.T, err error) {
@@ -36,11 +37,7 @@ func TestTemperatures(t *testing.T) {
 	}
 	v, err := SensorsTemperatures()
 	skipIfNotImplementedErr(t, err)
-	if err != nil {
+	require.NoError(t, err)
-		t.Errorf("error %v", err)
+	assert.NotEmptyf(t, v, "Could not get temperature %v", v)
-	}
-	if len(v) == 0 {
-		t.Errorf("Could not get temperature %v", v)
-	}
 	t.Log(v)
 }