Enable FASS assertions for Pip Enter

Add a new test rule to EnterPipTest for comparing the new FASS
assertions with the old flicker testing. If the flicker tests from one category
(presubmit/postsumbit/flaky) are passing or failing, the corresponding
FASS test should have the same behaviour.

Bug: 201523242
Test: see the results in the dashboard go/wm-tests-flicker
Change-Id: I884437876f5bef6a58b4f7bacfbad0fa435e0256

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/pip/EnterPipTest.kt

@@ -16,6 +16,7 @@
 
 package com.android.wm.shell.flicker.pip
 
+import android.platform.test.annotations.Postsubmit
 import android.platform.test.annotations.Presubmit
 import android.view.Surface
 import androidx.test.filters.FlakyTest
@@ -27,8 +28,10 @@ import com.android.server.wm.flicker.LAUNCHER_COMPONENT
 import com.android.server.wm.flicker.annotation.Group3
 import com.android.server.wm.flicker.dsl.FlickerBuilder
 import com.android.server.wm.flicker.helpers.isShellTransitionsEnabled
+import com.android.server.wm.flicker.rules.WMFlickerServiceRuleForTestSpec
 import org.junit.Assume.assumeFalse
 import org.junit.FixMethodOrder
+import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.junit.runners.MethodSorters
@@ -57,6 +60,9 @@ import org.junit.runners.Parameterized
 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
 @Group3
 class EnterPipTest(testSpec: FlickerTestParameter) : PipTransition(testSpec) {
+    @get:Rule
+    val flickerRule = WMFlickerServiceRuleForTestSpec(testSpec)
+
     /**
      * Defines the transition used to run the test
      */
@@ -67,6 +73,24 @@ class EnterPipTest(testSpec: FlickerTestParameter) : PipTransition(testSpec) {
             }
         }
 
+    @Postsubmit
+    @Test
+    fun runPresubmitAssertion() {
+        flickerRule.checkPresubmitAssertions()
+    }
+
+    @Postsubmit
+    @Test
+    fun runPostsubmitAssertion() {
+        flickerRule.checkPostsubmitAssertions()
+    }
+
+    @FlakyTest
+    @Test
+    fun runFlakyAssertion() {
+        flickerRule.checkFlakyAssertions()
+    }
+
     /** {@inheritDoc}  */
     @Presubmit
     @Test