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feat: add k8s unittest for k8s (#404)
Add unittest for k8s logic Signed-off-by: jcriadomarco <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,234 @@ | ||
| package datasource | ||
|
|
||
| import ( | ||
| "context" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/sirupsen/logrus" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/vmware/kube-fluentd-operator/config-reloader/config" | ||
| "github.com/vmware/kube-fluentd-operator/config-reloader/datasource/kubedatasource" | ||
| corev1 "k8s.io/api/core/v1" | ||
|
|
||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/informers" | ||
| testclient "k8s.io/client-go/kubernetes/fake" | ||
| ) | ||
|
|
||
| type testConfig struct { | ||
| config config.Config | ||
| expectErr bool | ||
| expectedResult int | ||
| namespaces []string | ||
| configmap map[string]string | ||
| configmapData map[string]string | ||
| } | ||
|
|
||
| func importK8sObjects(factory informers.SharedInformerFactory, namespaces []string, configmaps map[string]string, configmapData map[string]string) { | ||
| for _, ns := range namespaces { | ||
| factory.Core().V1().Namespaces().Informer().GetIndexer().Add( | ||
| &corev1.Namespace{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: ns, | ||
| }, | ||
| }, | ||
| ) | ||
| } | ||
| for cm, ns := range configmaps { | ||
| factory.Core().V1().ConfigMaps().Informer().GetIndexer().Add( | ||
| &corev1.ConfigMap{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: cm, | ||
| Namespace: ns, | ||
| }, | ||
| Data: configmapData, | ||
| }, | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| // UnitTest for GetNamespaces while using configmap mode | ||
| func TestGetNamespaces(t *testing.T) { | ||
| assert := assert.New(t) | ||
| configs := []testConfig{ | ||
| { | ||
| //TestCase: One Namespace without any fluentd config. Result empty | ||
| config: config.Config{ | ||
| Datasource: "default", | ||
| AnnotConfigmapName: "logging.csp.vmware.com/fluentd-configmap", | ||
| AnnotStatus: "logging.csp.vmware.com/fluentd-status", | ||
| ID: "default", | ||
| }, | ||
| expectErr: false, | ||
| expectedResult: 0, | ||
| namespaces: []string{ | ||
| "test1", | ||
| }, | ||
| }, | ||
| { | ||
| //TestCase: Two Namespaces, one without cm and one with empty fluentd config. Result empty | ||
| config: config.Config{ | ||
| Datasource: "default", | ||
| AnnotConfigmapName: "logging.csp.vmware.com/fluentd-configmap", | ||
| AnnotStatus: "logging.csp.vmware.com/fluentd-status", | ||
| ID: "default", | ||
| }, | ||
| expectErr: false, | ||
| expectedResult: 0, | ||
| namespaces: []string{ | ||
| "test-empty", | ||
| "test-empty-2", | ||
| }, | ||
| configmap: map[string]string{ | ||
| "fluentd-config": "test-empty", | ||
| "my-configmap1": "test-empty", | ||
| "my-configmap2": "test-empty-2", | ||
| }, | ||
| }, | ||
| { | ||
| //TestCase: Two Namespaces, one fluentd config. Result 1 | ||
| config: config.Config{ | ||
| Datasource: "default", | ||
| DefaultConfigmapName: "fluentd-config", | ||
| AnnotConfigmapName: "logging.csp.vmware.com/fluentd-configmap", | ||
| AnnotStatus: "logging.csp.vmware.com/fluentd-status", | ||
| ID: "default", | ||
| }, | ||
| expectErr: false, | ||
| expectedResult: 1, | ||
| namespaces: []string{ | ||
| "test-not-empty", | ||
| "test-not-empty-2", | ||
| }, | ||
| configmap: map[string]string{ | ||
| "fluentd-config": "test-not-empty", | ||
| }, | ||
| configmapData: map[string]string{"fluent.conf": "<match **>\n@type stdout\n</match>"}, | ||
| }, | ||
| } | ||
| for _, config := range configs { | ||
| // Prepare TestCase | ||
| ctx := context.Background() | ||
| clientset := testclient.NewSimpleClientset() | ||
| factory := informers.NewSharedInformerFactory(clientset, 0) | ||
| kubeds, _ := kubedatasource.NewConfigMapDS(ctx, &config.config, factory, make(chan time.Time, 1)) | ||
| var ds = &kubeInformerConnection{ | ||
| client: clientset, | ||
| cfg: &config.config, | ||
| nslist: factory.Core().V1().Namespaces().Lister(), | ||
| cmlist: factory.Core().V1().ConfigMaps().Lister(), | ||
| podlist: factory.Core().V1().Pods().Lister(), | ||
| kubeds: kubeds, | ||
| mountedLabels: make(map[string][]map[string]string), | ||
| } | ||
| importK8sObjects(factory, config.namespaces, config.configmap, config.configmapData) | ||
| // Run Test GetNamespace | ||
| namespaces, err := ds.GetNamespaces(ctx) | ||
| // Check Test Result | ||
| if err != nil { | ||
| logrus.Fatalf(err.Error()) | ||
| } | ||
| assert.Equal(config.expectedResult, len(namespaces)) | ||
| for index, ns := range namespaces { | ||
| assert.Equal(config.namespaces[index], ns.Name) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func TestDiscoverNamespaces(t *testing.T) { | ||
| assert := assert.New(t) | ||
| configs := []testConfig{ | ||
| { | ||
| //TestCase: Two Namespaces, emptu DefaultConfigmapName. Result 2 | ||
| config: config.Config{ | ||
| Datasource: "default", | ||
| AnnotConfigmapName: "logging.csp.vmware.com/fluentd-configmap", | ||
| AnnotStatus: "logging.csp.vmware.com/fluentd-status", | ||
| ID: "default", | ||
| }, | ||
| expectErr: false, | ||
| expectedResult: 2, | ||
| namespaces: []string{ | ||
| "test1", | ||
| "test2", | ||
| }, | ||
| }, | ||
| { | ||
| //TestCase: Two Namespaces, use DefaultConfigmapName. Result 1 | ||
| config: config.Config{ | ||
| Datasource: "default", | ||
| DefaultConfigmapName: "fluentd-config", | ||
| AnnotConfigmapName: "logging.csp.vmware.com/fluentd-configmap", | ||
| AnnotStatus: "logging.csp.vmware.com/fluentd-status", | ||
| ID: "default", | ||
| }, | ||
| expectErr: false, | ||
| expectedResult: 1, | ||
| namespaces: []string{ | ||
| "test1", | ||
| "test2", | ||
| }, | ||
| configmap: map[string]string{ | ||
| "configmap1": "test1", | ||
| "configmap2": "test2", | ||
| "fluentd-config": "test1", | ||
| }, | ||
| }, | ||
| } | ||
| for _, config := range configs { | ||
| // Prepare TestCase | ||
| ctx := context.Background() | ||
| clientset := testclient.NewSimpleClientset() | ||
| factory := informers.NewSharedInformerFactory(clientset, 0) | ||
| var ds = &kubeInformerConnection{ | ||
| client: clientset, | ||
| cfg: &config.config, | ||
| nslist: factory.Core().V1().Namespaces().Lister(), | ||
| cmlist: factory.Core().V1().ConfigMaps().Lister(), | ||
| } | ||
| importK8sObjects(factory, config.namespaces, config.configmap, config.configmapData) | ||
| // Run Test discoverNamespaces | ||
| namespaces, err := ds.discoverNamespaces(ctx) | ||
| // Check Test Result | ||
| if err != nil { | ||
| logrus.Fatalf(err.Error()) | ||
| } | ||
| assert.Equal(len(namespaces), config.expectedResult) | ||
| } | ||
| } | ||
|
|
||
| // Test the updateStatus config creating a namespace and check label and value | ||
| func TestUpdateStatus(t *testing.T) { | ||
| assert := assert.New(t) | ||
| annotationValue := "Example annotation" | ||
| namespace := "test-namespace" | ||
| testCfg := &config.Config{ | ||
| Datasource: "default", | ||
| AnnotConfigmapName: "logging.csp.vmware.com/fluentd-configmap", | ||
| AnnotStatus: "logging.csp.vmware.com/fluentd-status", | ||
| ID: "default", | ||
| } | ||
| ctx := context.Background() | ||
| clientset := testclient.NewSimpleClientset( | ||
| &corev1.Namespace{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: namespace, | ||
| }, | ||
| }, | ||
| ) | ||
| factory := informers.NewSharedInformerFactory(clientset, 0) | ||
| var ds = &kubeInformerConnection{ | ||
| client: clientset, | ||
| cfg: testCfg, | ||
| nslist: factory.Core().V1().Namespaces().Lister(), | ||
| cmlist: factory.Core().V1().ConfigMaps().Lister(), | ||
| } | ||
|
|
||
| ds.UpdateStatus(ctx, namespace, annotationValue) | ||
| ns, err := clientset.CoreV1().Namespaces().Get(ctx, namespace, metav1.GetOptions{}) | ||
| if err != nil { | ||
| logrus.Fatalf("Unable to read namespace in cluster: %+v", err) | ||
| } | ||
| assert.Equal(ns.Annotations[testCfg.AnnotStatus], annotationValue) | ||
| } |
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