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[controller] Add tests to linstor_leader controller (#40)
Signed-off-by: Viktor Kramarenko <[email protected]>
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images/sds-drbd-controller/pkg/controller/linstor_leader_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,333 @@ | ||
| package controller | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "github.com/stretchr/testify/assert" | ||
| v12 "k8s.io/api/coordination/v1" | ||
| v1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "sds-drbd-controller/pkg/logger" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestLinstorLeaderController(t *testing.T) { | ||
| var ( | ||
| cl = newFakeClient() | ||
| ctx = context.Background() | ||
| log = logger.Logger{} | ||
| namespace = "test-ns" | ||
| leaseName = "test-lease" | ||
| linstorLabelValue = "test" | ||
| ) | ||
|
|
||
| t.Run("no_lease_returns_error", func(t *testing.T) { | ||
| err := reconcileLinstorControllerPods(ctx, cl, log, namespace, leaseName) | ||
| assert.Error(t, err) | ||
| }) | ||
|
|
||
| t.Run("app_label_not_exists_linstor_label_exists_does_nothing", func(t *testing.T) { | ||
| const ( | ||
| podName = "first-pod" | ||
| ) | ||
| podList := &v1.PodList{ | ||
| Items: []v1.Pod{ | ||
| { | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| Labels: map[string]string{ | ||
| LinstorLeaderLabel: linstorLabelValue, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| lease := &v12.Lease{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: leaseName, | ||
| Namespace: namespace, | ||
| }, | ||
| Spec: v12.LeaseSpec{ | ||
| HolderIdentity: nil, | ||
| }, | ||
| } | ||
|
|
||
| var err error | ||
| for _, pod := range podList.Items { | ||
| err = cl.Create(ctx, &pod) | ||
| } | ||
| err = cl.Create(ctx, lease) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| defer func() { | ||
| for _, pod := range podList.Items { | ||
| err = cl.Delete(ctx, &pod) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| } | ||
|
|
||
| err = cl.Delete(ctx, lease) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| }() | ||
| } | ||
|
|
||
| podWithLabel := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithLabel) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| assert.Equal(t, podWithLabel.Labels[LinstorLeaderLabel], linstorLabelValue) | ||
| } | ||
|
|
||
| err = reconcileLinstorControllerPods(ctx, cl, log, namespace, leaseName) | ||
| assert.NoError(t, err) | ||
|
|
||
| podWithLabelAfretReconcile := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithLabelAfretReconcile) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| _, exist := podWithLabelAfretReconcile.Labels[LinstorLeaderLabel] | ||
| assert.True(t, exist) | ||
| } | ||
| }) | ||
|
|
||
| t.Run("linstor_label_exists_lease_HolderIdentity_is_nil_removes_label", func(t *testing.T) { | ||
| const ( | ||
| podName = "first-pod" | ||
| ) | ||
| podList := &v1.PodList{ | ||
| Items: []v1.Pod{ | ||
| { | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| Labels: map[string]string{ | ||
| "app": LinstorControllerAppLabelValue, | ||
| LinstorLeaderLabel: linstorLabelValue, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| lease := &v12.Lease{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: leaseName, | ||
| Namespace: namespace, | ||
| }, | ||
| Spec: v12.LeaseSpec{ | ||
| HolderIdentity: nil, | ||
| }, | ||
| } | ||
|
|
||
| var err error | ||
| for _, pod := range podList.Items { | ||
| err = cl.Create(ctx, &pod) | ||
| } | ||
| err = cl.Create(ctx, lease) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| defer func() { | ||
| for _, pod := range podList.Items { | ||
| err = cl.Delete(ctx, &pod) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| } | ||
|
|
||
| err = cl.Delete(ctx, lease) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| }() | ||
| } | ||
|
|
||
| podWithLabel := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithLabel) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| assert.Equal(t, podWithLabel.Labels[LinstorLeaderLabel], linstorLabelValue) | ||
| } | ||
|
|
||
| err = reconcileLinstorControllerPods(ctx, cl, log, namespace, leaseName) | ||
| assert.NoError(t, err) | ||
|
|
||
| podWithoutLabel := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithoutLabel) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| _, exist := podWithoutLabel.Labels[LinstorLeaderLabel] | ||
| assert.False(t, exist) | ||
| } | ||
| }) | ||
|
|
||
| t.Run("linstor_label_exists_lease_HolderIdentity_not_nil_pod_name_not_equals_HolderIdentity_removes_label", func(t *testing.T) { | ||
| const ( | ||
| podName = "first-pod" | ||
| ) | ||
| podList := &v1.PodList{ | ||
| Items: []v1.Pod{ | ||
| { | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| Labels: map[string]string{ | ||
| "app": LinstorControllerAppLabelValue, | ||
| LinstorLeaderLabel: linstorLabelValue, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| hi := "another-name" | ||
| lease := &v12.Lease{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: leaseName, | ||
| Namespace: namespace, | ||
| }, | ||
| Spec: v12.LeaseSpec{ | ||
| HolderIdentity: &hi, | ||
| }, | ||
| } | ||
|
|
||
| var err error | ||
| for _, pod := range podList.Items { | ||
| err = cl.Create(ctx, &pod) | ||
| } | ||
| err = cl.Create(ctx, lease) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| defer func() { | ||
| for _, pod := range podList.Items { | ||
| err = cl.Delete(ctx, &pod) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| } | ||
|
|
||
| err = cl.Delete(ctx, lease) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| }() | ||
| } | ||
|
|
||
| podWithLabel := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithLabel) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| assert.Equal(t, podWithLabel.Labels[LinstorLeaderLabel], linstorLabelValue) | ||
| } | ||
|
|
||
| err = reconcileLinstorControllerPods(ctx, cl, log, namespace, leaseName) | ||
| assert.NoError(t, err) | ||
|
|
||
| podWithoutLabel := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithoutLabel) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| _, exist := podWithoutLabel.Labels[LinstorLeaderLabel] | ||
| assert.False(t, exist) | ||
| } | ||
| }) | ||
|
|
||
| t.Run("linstor_label_not_exists_lease_HolderIdentity_not_nil_pod_name_equals_HolderIdentity_set_label_true", func(t *testing.T) { | ||
| const ( | ||
| podName = "first-pod" | ||
| ) | ||
| podList := &v1.PodList{ | ||
| Items: []v1.Pod{ | ||
| { | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| Labels: map[string]string{ | ||
| "app": LinstorControllerAppLabelValue, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| hi := podName | ||
| lease := &v12.Lease{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: leaseName, | ||
| Namespace: namespace, | ||
| }, | ||
| Spec: v12.LeaseSpec{ | ||
| HolderIdentity: &hi, | ||
| }, | ||
| } | ||
|
|
||
| var err error | ||
| for _, pod := range podList.Items { | ||
| err = cl.Create(ctx, &pod) | ||
| } | ||
| err = cl.Create(ctx, lease) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| defer func() { | ||
| for _, pod := range podList.Items { | ||
| err = cl.Delete(ctx, &pod) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| } | ||
|
|
||
| err = cl.Delete(ctx, lease) | ||
| if err != nil { | ||
| fmt.Println(fmt.Errorf("unexpected ERROR: %w", err)) | ||
| } | ||
| }() | ||
| } | ||
|
|
||
| podWithoutLabel := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithoutLabel) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| _, exist := podWithoutLabel.Labels[LinstorLeaderLabel] | ||
| assert.False(t, exist) | ||
| } | ||
|
|
||
| err = reconcileLinstorControllerPods(ctx, cl, log, namespace, leaseName) | ||
| assert.NoError(t, err) | ||
|
|
||
| podWithLabel := &v1.Pod{} | ||
| err = cl.Get(ctx, client.ObjectKey{ | ||
| Name: podName, | ||
| Namespace: namespace, | ||
| }, podWithLabel) | ||
|
|
||
| if assert.NoError(t, err) { | ||
| assert.Equal(t, podWithLabel.Labels[LinstorLeaderLabel], "true") | ||
| } | ||
| }) | ||
| } |