Convert NodeLabelPresence custom predicate to filter plugin.

pkg/scheduler/framework/plugins/nodelabel/node_label_test.go

@@ -0,0 +1,88 @@
+/*
+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 nodelabel
+
+import (
+	"context"
+	"testing"
+
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
+	schedulernodeinfo "k8s.io/kubernetes/pkg/scheduler/nodeinfo"
+)
+
+func TestNodeLabelPresence(t *testing.T) {
+	label := map[string]string{"foo": "bar", "bar": "foo"}
+	tests := []struct {
+		name    string
+		pod     *v1.Pod
+		rawArgs string
+		res     framework.Code
+	}{
+		{
+			name:    "label does not match, presence true",
+			rawArgs: `{"labels" : ["baz"], "presence" : true}`,
+			res:     framework.UnschedulableAndUnresolvable,
+		},
+		{
+			name:    "label does not match, presence false",
+			rawArgs: `{"labels" : ["baz"], "presence" : false}`,
+			res:     framework.Success,
+		},
+		{
+			name:    "one label matches, presence true",
+			rawArgs: `{"labels" : ["foo", "baz"], "presence" : true}`,
+			res:     framework.UnschedulableAndUnresolvable,
+		},
+		{
+			name:    "one label matches, presence false",
+			rawArgs: `{"labels" : ["foo", "baz"], "presence" : false}`,
+			res:     framework.UnschedulableAndUnresolvable,
+		},
+		{
+			name:    "all labels match, presence true",
+			rawArgs: `{"labels" : ["foo", "bar"], "presence" : true}`,
+			res:     framework.Success,
+		},
+		{
+			name:    "all labels match, presence false",
+			rawArgs: `{"labels" : ["foo", "bar"], "presence" : false}`,
+			res:     framework.UnschedulableAndUnresolvable,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			node := v1.Node{ObjectMeta: metav1.ObjectMeta{Labels: label}}
+			nodeInfo := schedulernodeinfo.NewNodeInfo()
+			nodeInfo.SetNode(&node)
+
+			args := &runtime.Unknown{Raw: []byte(test.rawArgs)}
+			p, err := New(args, nil)
+			if err != nil {
+				t.Fatalf("Failed to create plugin: %v", err)
+			}
+
+			status := p.(framework.FilterPlugin).Filter(context.TODO(), nil, test.pod, nodeInfo)
+			if status.Code() != test.res {
+				t.Errorf("Status mismatch. got: %v, want: %v", status.Code(), test.res)
+			}
+		})
+	}
+}