Add basic unit test with feature flag off

Author: Mohit Vinchoo

pkg/scheduler/actions/preempt/preempt_test.go

@@ -314,6 +314,20 @@ func TestPreempt(t *testing.T) {
 			}
 		})
 	}
+	actions = []framework.Action{New()}
+	for i, test := range tests {
+		test.Plugins = plugins
+		test.PriClass = []*schedulingv1.PriorityClass{highPrio, lowPrio}
+		t.Run(test.Name, func(t *testing.T) {
+			test.RegisterSession(tiers, []conf.Configuration{{Name: actions[0].Name(),
+				Arguments: map[string]interface{}{EnableStrictGangPreemptionKey: false}}})
+			defer test.Close()
+			test.Run(actions)
+			if err := test.CheckAll(i); err != nil {
+				t.Fatal(err)
+			}
+		})
+	}
 }
 
 func TestTopologyAwarePreempt(t *testing.T) {