admission_test.go

Documentation: k8s.io/kubernetes/plugin/pkg/admission/nodetaint

     1  /*
     2  Copyright 2019 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package nodetaint
    18  
    19  import (
    20  	"context"
    21  	"reflect"
    22  
    23  	"testing"
    24  
    25  	v1 "k8s.io/api/core/v1"
    26  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    27  	"k8s.io/apimachinery/pkg/runtime"
    28  	"k8s.io/apiserver/pkg/admission"
    29  	"k8s.io/apiserver/pkg/authentication/user"
    30  	api "k8s.io/kubernetes/pkg/apis/core"
    31  )
    32  
    33  func Test_nodeTaints(t *testing.T) {
    34  	var (
    35  		mynode            = &user.DefaultInfo{Name: "system:node:mynode", Groups: []string{"system:nodes"}}
    36  		resource          = api.Resource("nodes").WithVersion("v1")
    37  		notReadyTaint     = api.Taint{Key: v1.TaintNodeNotReady, Effect: api.TaintEffectNoSchedule}
    38  		notReadyCondition = api.NodeCondition{Type: api.NodeReady, Status: api.ConditionFalse}
    39  		myNodeObjMeta     = metav1.ObjectMeta{Name: "mynode"}
    40  		myNodeObj         = api.Node{ObjectMeta: myNodeObjMeta}
    41  		myTaintedNodeObj  = api.Node{ObjectMeta: myNodeObjMeta,
    42  			Spec: api.NodeSpec{Taints: []api.Taint{notReadyTaint}}}
    43  		myUnreadyNodeObj = api.Node{ObjectMeta: myNodeObjMeta,
    44  			Status: api.NodeStatus{Conditions: []api.NodeCondition{notReadyCondition}}}
    45  		nodeKind = api.Kind("Node").WithVersion("v1")
    46  	)
    47  	tests := []struct {
    48  		name           string
    49  		node           api.Node
    50  		oldNode        api.Node
    51  		operation      admission.Operation
    52  		options        runtime.Object
    53  		expectedTaints []api.Taint
    54  	}{
    55  		{
    56  			name:           "notReady taint is added on creation",
    57  			node:           myNodeObj,
    58  			operation:      admission.Create,
    59  			options:        &metav1.CreateOptions{},
    60  			expectedTaints: []api.Taint{notReadyTaint},
    61  		},
    62  		{
    63  			name:           "already tainted node is not tainted again",
    64  			node:           myTaintedNodeObj,
    65  			operation:      admission.Create,
    66  			options:        &metav1.CreateOptions{},
    67  			expectedTaints: []api.Taint{notReadyTaint},
    68  		},
    69  		{
    70  			name:           "NotReady taint is added to an unready node as well",
    71  			node:           myUnreadyNodeObj,
    72  			operation:      admission.Create,
    73  			options:        &metav1.CreateOptions{},
    74  			expectedTaints: []api.Taint{notReadyTaint},
    75  		},
    76  	}
    77  	for _, tt := range tests {
    78  		t.Run(tt.name, func(t *testing.T) {
    79  			attributes := admission.NewAttributesRecord(&tt.node, &tt.oldNode, nodeKind, myNodeObj.Namespace, myNodeObj.Name, resource, "", tt.operation, tt.options, false, mynode)
    80  			c := NewPlugin()
    81  			err := c.Admit(context.TODO(), attributes, nil)
    82  			if err != nil {
    83  				t.Errorf("nodePlugin.Admit() error = %v", err)
    84  			}
    85  			node, _ := attributes.GetObject().(*api.Node)
    86  			if !reflect.DeepEqual(node.Spec.Taints, tt.expectedTaints) {
    87  				t.Errorf("Unexpected Node taints. Got %v\nExpected: %v", node.Spec.Taints, tt.expectedTaints)
    88  			}
    89  		})
    90  	}
    91  }
    92
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