88 lines
1.9 KiB
Go
88 lines
1.9 KiB
Go
package fs
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"github.com/docker/libcontainer/cgroups"
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)
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const (
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cgroupFile = "cgroup.file"
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floatValue = 2048.0
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floatString = "2048"
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)
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func TestGetCgroupParamsInt(t *testing.T) {
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// Setup tempdir.
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tempDir, err := ioutil.TempDir("", "cgroup_utils_test")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(tempDir)
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tempFile := filepath.Join(tempDir, cgroupFile)
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// Success.
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err = ioutil.WriteFile(tempFile, []byte(floatString), 0755)
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if err != nil {
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t.Fatal(err)
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}
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value, err := getCgroupParamInt(tempDir, cgroupFile)
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if err != nil {
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t.Fatal(err)
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} else if value != floatValue {
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t.Fatalf("Expected %d to equal %f", value, floatValue)
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}
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// Success with new line.
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err = ioutil.WriteFile(tempFile, []byte(floatString+"\n"), 0755)
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if err != nil {
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t.Fatal(err)
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}
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value, err = getCgroupParamInt(tempDir, cgroupFile)
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if err != nil {
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t.Fatal(err)
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} else if value != floatValue {
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t.Fatalf("Expected %d to equal %f", value, floatValue)
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}
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// Not a float.
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err = ioutil.WriteFile(tempFile, []byte("not-a-float"), 0755)
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if err != nil {
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t.Fatal(err)
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}
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_, err = getCgroupParamInt(tempDir, cgroupFile)
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if err == nil {
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t.Fatal("Expecting error, got none")
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}
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// Unknown file.
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err = os.Remove(tempFile)
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if err != nil {
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t.Fatal(err)
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}
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_, err = getCgroupParamInt(tempDir, cgroupFile)
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if err == nil {
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t.Fatal("Expecting error, got none")
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}
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}
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func TestAbsolutePathHandling(t *testing.T) {
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testCgroup := cgroups.Cgroup{
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Name: "bar",
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Parent: "/foo",
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}
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cgroupData := data{
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root: "/sys/fs/cgroup",
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cgroup: "/foo/bar",
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c: &testCgroup,
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pid: 1,
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}
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expectedPath := filepath.Join(cgroupData.root, "cpu", testCgroup.Parent, testCgroup.Name)
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if path, err := cgroupData.path("cpu"); path != expectedPath || err != nil {
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t.Fatalf("expected path %s but got %s %s", expectedPath, path, err)
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}
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}
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