Fix existing unit test (add no op scoring plugin)

pkg/scheduler/extender_test.go

@@ -93,6 +93,7 @@ func TestSchedulerWithExtenders(t *testing.T) {
 			registerPlugins: []tf.RegisterPluginFunc{
 				tf.RegisterFilterPlugin("TrueFilter", tf.NewTrueFilterPlugin),
 				tf.RegisterQueueSortPlugin(queuesort.Name, queuesort.New),
+				tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 			},
 			extenders: []tf.FakeExtender{
@@ -245,6 +246,7 @@ func TestSchedulerWithExtenders(t *testing.T) {
 			// because of the errors from errorPredicateExtender.
 			registerPlugins: []tf.RegisterPluginFunc{
 				tf.RegisterFilterPlugin("TrueFilter", tf.NewTrueFilterPlugin),
+				tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 				tf.RegisterQueueSortPlugin(queuesort.Name, queuesort.New),
 				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 			},

pkg/scheduler/schedule_one_test.go

@@ -1814,6 +1814,7 @@ func TestSchedulerSchedulePod(t *testing.T) {
 			registerPlugins: []tf.RegisterPluginFunc{
 				tf.RegisterQueueSortPlugin(queuesort.Name, queuesort.New),
 				tf.RegisterFilterPlugin("TrueFilter", tf.NewTrueFilterPlugin),
+				tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 			},
 			nodes:     []string{"node1", "node2"},
@@ -1931,6 +1932,7 @@ func TestSchedulerSchedulePod(t *testing.T) {
 				tf.RegisterQueueSortPlugin(queuesort.Name, queuesort.New),
 				tf.RegisterPreFilterPlugin(volumebinding.Name, frameworkruntime.FactoryAdapter(fts, volumebinding.New)),
 				tf.RegisterFilterPlugin("TrueFilter", tf.NewTrueFilterPlugin),
+				tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 			},
 			nodes: []string{"node1", "node2"},
@@ -2044,6 +2046,7 @@ func TestSchedulerSchedulePod(t *testing.T) {
 					"PreFilter",
 					"Filter",
 				),
+				tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 			},
 			nodes: []string{"node1", "node2", "node3"},
@@ -2317,6 +2320,7 @@ func TestSchedulerSchedulePod(t *testing.T) {
 						},
 					}, nil
 				}, "PreFilter", "Filter"),
+				tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 			},
 			nodes:              []string{"node1", "node2", "node3"},
@@ -3211,6 +3215,7 @@ func TestFairEvaluationForNodes(t *testing.T) {
 		[]tf.RegisterPluginFunc{
 			tf.RegisterQueueSortPlugin(queuesort.Name, queuesort.New),
 			tf.RegisterFilterPlugin("TrueFilter", tf.NewTrueFilterPlugin),
+			tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 			tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 		},
 		"",
@@ -3289,6 +3294,7 @@ func TestPreferNominatedNodeFilterCallCounts(t *testing.T) {
 			registerPlugins := []tf.RegisterPluginFunc{
 				tf.RegisterQueueSortPlugin(queuesort.Name, queuesort.New),
 				registerFakeFilterFunc,
+				tf.RegisterScorePlugin("EqualPrioritizerPlugin", tf.NewEqualPrioritizerPlugin(), 20),
 				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 			}
 			fwk, err := tf.NewFramework(

pkg/scheduler/testing/framework/fake_extender.go

@@ -137,6 +137,30 @@ func (pl *node2PrioritizerPlugin) ScoreExtensions() framework.ScoreExtensions {
 	return nil
 }
 
+type equalPrioritizerPlugin struct{}
+
+// NewEqualPrioritizerPlugin returns a factory function to build equalPrioritizerPlugin.
+func NewEqualPrioritizerPlugin() frameworkruntime.PluginFactory {
+	return func(_ context.Context, _ runtime.Object, _ framework.Handle) (framework.Plugin, error) {
+		return &equalPrioritizerPlugin{}, nil
+	}
+}
+
+// Name returns the name of the plugin.
+func (pl *equalPrioritizerPlugin) Name() string {
+	return "EqualPrioritizerPlugin"
+}
+
+// Score returns score 1 for each node.
+func (pl *equalPrioritizerPlugin) Score(_ context.Context, _ *framework.CycleState, _ *v1.Pod, _ string) (int64, *framework.Status) {
+	return int64(1), nil
+}
+
+// ScoreExtensions returns nil.
+func (pl *equalPrioritizerPlugin) ScoreExtensions() framework.ScoreExtensions {
+	return nil
+}
+
 // FakeExtender is a data struct which implements the Extender interface.
 type FakeExtender struct {
 	// ExtenderName indicates this fake extender's name.