/* Copyright 2019 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package nodetaint import ( "context" "reflect" "testing" v1 "k8s.io/api/core/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" "k8s.io/apiserver/pkg/admission" "k8s.io/apiserver/pkg/authentication/user" api "k8s.io/kubernetes/pkg/apis/core" ) func Test_nodeTaints(t *testing.T) { var ( mynode = &user.DefaultInfo{Name: "system:node:mynode", Groups: []string{"system:nodes"}} resource = api.Resource("nodes").WithVersion("v1") notReadyTaint = api.Taint{Key: v1.TaintNodeNotReady, Effect: api.TaintEffectNoSchedule} notReadyCondition = api.NodeCondition{Type: api.NodeReady, Status: api.ConditionFalse} myNodeObjMeta = metav1.ObjectMeta{Name: "mynode"} myNodeObj = api.Node{ObjectMeta: myNodeObjMeta} myTaintedNodeObj = api.Node{ObjectMeta: myNodeObjMeta, Spec: api.NodeSpec{Taints: []api.Taint{notReadyTaint}}} myUnreadyNodeObj = api.Node{ObjectMeta: myNodeObjMeta, Status: api.NodeStatus{Conditions: []api.NodeCondition{notReadyCondition}}} nodeKind = api.Kind("Node").WithVersion("v1") ) tests := []struct { name string node api.Node oldNode api.Node operation admission.Operation options runtime.Object expectedTaints []api.Taint }{ { name: "notReady taint is added on creation", node: myNodeObj, operation: admission.Create, options: &metav1.CreateOptions{}, expectedTaints: []api.Taint{notReadyTaint}, }, { name: "already tainted node is not tainted again", node: myTaintedNodeObj, operation: admission.Create, options: &metav1.CreateOptions{}, expectedTaints: []api.Taint{notReadyTaint}, }, { name: "NotReady taint is added to an unready node as well", node: myUnreadyNodeObj, operation: admission.Create, options: &metav1.CreateOptions{}, expectedTaints: []api.Taint{notReadyTaint}, }, } for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { attributes := admission.NewAttributesRecord(&tt.node, &tt.oldNode, nodeKind, myNodeObj.Namespace, myNodeObj.Name, resource, "", tt.operation, tt.options, false, mynode) c := NewPlugin() err := c.Admit(context.TODO(), attributes, nil) if err != nil { t.Errorf("nodePlugin.Admit() error = %v", err) } node, _ := attributes.GetObject().(*api.Node) if !reflect.DeepEqual(node.Spec.Taints, tt.expectedTaints) { t.Errorf("Unexpected Node taints. Got %v\nExpected: %v", node.Spec.Taints, tt.expectedTaints) } }) } }