Merge pull request kubernetes#76603 from changyaowei/generic_ut_fix

fix  TestEventChannelFull random fail

Author: k8s-ci-robot

pkg/kubelet/pleg/generic_test.go

@@ -211,15 +211,17 @@ func TestEventChannelFull(t *testing.T) {
 		}},
 	}
 	pleg.relist()
-	// event channel is full, discard events
-	expected = []*PodLifecycleEvent{
+	allEvents := []*PodLifecycleEvent{
 		{ID: "1234", Type: ContainerRemoved, Data: "c1"},
 		{ID: "1234", Type: ContainerDied, Data: "c2"},
 		{ID: "1234", Type: ContainerStarted, Data: "c3"},
 		{ID: "4567", Type: ContainerRemoved, Data: "c1"},
+		{ID: "4567", Type: ContainerStarted, Data: "c4"},
 	}
+	// event channel is full, discard events
 	actual = getEventsFromChannel(ch)
-	verifyEvents(t, expected, actual)
+	assert.True(t, len(actual) == 4, "channel length should be 4")
+	assert.Subsetf(t, allEvents, actual, "actual events should in all events")
 }
 
 func TestDetectingContainerDeaths(t *testing.T) {