Function TestGetUsage

cgroup1/cpuacct_test.go:30–70

(t *testing.T)

`

func TestGetUsage(t *testing.T) {
	mock, err := newMock(t)
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		if err := mock.delete(); err != nil {
			t.Errorf("failed delete: %v", err)
		}
	}()
	cpuacct := NewCpuacct(mock.root)
	if cpuacct == nil {
		t.Fatal("cpuacct is nil")
	}
	err = os.Mkdir(filepath.Join(mock.root, string(Cpuacct), "test"), defaultDirPerm)
	if err != nil {
		t.Fatal(err)
	}
	current := filepath.Join(mock.root, string(Cpuacct), "test", "cpuacct.stat")
	if err = os.WriteFile(
		current,
		[]byte(cpuacctStatData),
		defaultFilePerm,
	); err != nil {
		t.Fatal(err)
	}
	user, kernel, err := cpuacct.getUsage("test")
	if err != nil {
		t.Fatalf("can't get usage: %v", err)
	}
	index := []uint64{
		user,
		kernel,
	}
	for i, v := range index {
		expected := ((uint64(i) + 1) * nanosecondsInSecond) / clockTicks
		if v != expected {
			t.Errorf("expected value at index %d to be %d but received %d", i, expected, v)
		}
	}
}