fix test and openbsd errors.

cpu/cpu_test.go

@@ -59,11 +59,23 @@ func TestCpu_times(t *testing.T) {
 		perCPUIdleTimeSum += pc.Idle
 	}
 	margin := 2.0
+	t.Log(cpuTotal[0])
+
+	if cpuTotal[0].User == 0 && cpuTotal[0].System == 0 && cpuTotal[0].Idle == 0 {
+		t.Error("could not get cpu values")
+	}
+	if cpuTotal[0].User != 0 {
 		assert.InEpsilon(t, cpuTotal[0].User, perCPUUserTimeSum, margin)
+	}
+	if cpuTotal[0].System != 0 {
 		assert.InEpsilon(t, cpuTotal[0].System, perCPUSystemTimeSum, margin)
+	}
+	if cpuTotal[0].Idle != 0 {
 		assert.InEpsilon(t, cpuTotal[0].Idle, perCPUIdleTimeSum, margin)
 	}
 
+}
+
 func TestCpu_counts(t *testing.T) {
 	v, err := Counts(true)
 	skipIfNotImplementedErr(t, err)

host/host_test.go

@@ -121,15 +121,15 @@ func TestUserStat_String(t *testing.T) {
 }
 
 func TestHostGuid(t *testing.T) {
-	hi, err := Info()
+	id, err := HostID()
 	skipIfNotImplementedErr(t, err)
 	if err != nil {
 		t.Error(err)
 	}
-	if hi.HostID == "" {
+	if id == "" {
 		t.Error("Host id is empty")
 	} else {
-		t.Logf("Host id value: %v", hi.HostID)
+		t.Logf("Host id value: %v", id)
 	}
 }
 

net/net_openbsd.go

@@ -4,7 +4,6 @@ package net
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"os/exec"
 	"regexp"
@@ -153,7 +152,7 @@ func FilterCounters() ([]FilterStat, error) {
 }
 
 func FilterCountersWithContext(ctx context.Context) ([]FilterStat, error) {
-	return nil, errors.New("NetFilterCounters not implemented for openbsd")
+	return nil, common.ErrNotImplementedError
 }
 
 func ConntrackStats(percpu bool) ([]ConntrackStat, error) {
@@ -173,7 +172,7 @@ func ProtoCounters(protocols []string) ([]ProtoCountersStat, error) {
 }
 
 func ProtoCountersWithContext(ctx context.Context, protocols []string) ([]ProtoCountersStat, error) {
-	return nil, errors.New("NetProtoCounters not implemented for openbsd")
+	return nil, common.ErrNotImplementedError
 }
 
 func parseNetstatLine(line string) (ConnectionStat, error) {