Reuse createOpenTaskDecoration() as much as possible

This is a pure test refactoring to reuse the utility method as much
as possible.

Flag: EXEMPT test refactoring
Bug: 356843241
Test: WMShellUnitTests:DesktopModeWindowDecorViewModelTests
Change-Id: I1e048a83d90fb8958d8e021d2bbc5a6c27d22604
diff --git a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/windowdecor/DesktopModeWindowDecorViewModelTests.kt b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/windowdecor/DesktopModeWindowDecorViewModelTests.kt
index fa905e2..a734689 100644
--- a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/windowdecor/DesktopModeWindowDecorViewModelTests.kt
+++ b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/windowdecor/DesktopModeWindowDecorViewModelTests.kt
@@ -284,11 +284,8 @@
     @Test
     @DisableFlags(Flags.FLAG_ENABLE_ADDITIONAL_WINDOWS_ABOVE_STATUS_BAR)
     fun testCreateAndDisposeEventReceiver() {
-        val task = createTask(windowingMode = WINDOWING_MODE_FREEFORM)
-        setUpMockDecorationForTask(task)
-
-        onTaskOpening(task)
-        desktopModeWindowDecorViewModel.destroyWindowDecoration(task)
+        val decor = createOpenTaskDecoration(windowingMode = WINDOWING_MODE_FREEFORM)
+        desktopModeWindowDecorViewModel.destroyWindowDecoration(decor.mTaskInfo)
 
         verify(mockInputMonitorFactory).create(any(), any())
         verify(mockInputMonitor).dispose()
@@ -357,16 +354,14 @@
     }
 
     @Test
-    fun testCloseButtonInFreeform() {
-        val task = createTask(windowingMode = WINDOWING_MODE_FREEFORM)
-        val windowDecor = setUpMockDecorationForTask(task)
+    fun testCloseButtonInFreeform_closeWindow() {
+        val onClickListenerCaptor = forClass(View.OnClickListener::class.java)
+                as ArgumentCaptor<View.OnClickListener>
+        val decor = createOpenTaskDecoration(
+            windowingMode = WINDOWING_MODE_FREEFORM,
+            onCaptionButtonClickListener = onClickListenerCaptor
+        )
 
-        onTaskOpening(task)
-        val onClickListenerCaptor = argumentCaptor<View.OnClickListener>()
-        verify(windowDecor).setCaptionListeners(
-            onClickListenerCaptor.capture(), any(), any(), any())
-
-        val onClickListener = onClickListenerCaptor.firstValue
         val view = mock(View::class.java)
         whenever(view.id).thenReturn(R.id.close_window)
 
@@ -374,7 +369,7 @@
         desktopModeWindowDecorViewModel
             .setFreeformTaskTransitionStarter(freeformTaskTransitionStarter)
 
-        onClickListener.onClick(view)
+        onClickListenerCaptor.value.onClick(view)
 
         val transactionCaptor = argumentCaptor<WindowContainerTransaction>()
         verify(freeformTaskTransitionStarter).startRemoveTransition(transactionCaptor.capture())
@@ -383,7 +378,7 @@
         assertEquals(1, wct.getHierarchyOps().size)
         assertEquals(HierarchyOp.HIERARCHY_OP_TYPE_REMOVE_TASK,
                      wct.getHierarchyOps().get(0).getType())
-        assertEquals(task.token.asBinder(), wct.getHierarchyOps().get(0).getContainer())
+        assertEquals(decor.mTaskInfo.token.asBinder(), wct.getHierarchyOps().get(0).getContainer())
     }
 
     @Test
@@ -458,15 +453,9 @@
 
     @Test
     fun testKeyguardState_notifiesAllDecors() {
-        val task1 = createTask(windowingMode = WINDOWING_MODE_FREEFORM)
-        val decoration1 = setUpMockDecorationForTask(task1)
-        onTaskOpening(task1)
-        val task2 = createTask(windowingMode = WINDOWING_MODE_FREEFORM)
-        val decoration2 = setUpMockDecorationForTask(task2)
-        onTaskOpening(task2)
-        val task3 = createTask(windowingMode = WINDOWING_MODE_FREEFORM)
-        val decoration3 = setUpMockDecorationForTask(task3)
-        onTaskOpening(task3)
+        val decoration1 = createOpenTaskDecoration(windowingMode = WINDOWING_MODE_FREEFORM)
+        val decoration2 = createOpenTaskDecoration(windowingMode = WINDOWING_MODE_FREEFORM)
+        val decoration3 = createOpenTaskDecoration(windowingMode = WINDOWING_MODE_FREEFORM)
 
         desktopModeOnKeyguardChangedListener
             .onKeyguardVisibilityChanged(true /* visible */, true /* occluded */,
@@ -1009,6 +998,8 @@
             forClass(Function0::class.java) as ArgumentCaptor<Function0<Unit>>,
         onOpenInBrowserClickListener: ArgumentCaptor<Consumer<Uri>> =
             forClass(Consumer::class.java) as ArgumentCaptor<Consumer<Uri>>,
+        onCaptionButtonClickListener: ArgumentCaptor<View.OnClickListener> =
+            forClass(View.OnClickListener::class.java) as ArgumentCaptor<View.OnClickListener>
     ): DesktopModeWindowDecoration {
         val decor = setUpMockDecorationForTask(createTask(windowingMode = windowingMode))
         onTaskOpening(decor.mTaskInfo)
@@ -1019,6 +1010,8 @@
         verify(decor).setOnToFullscreenClickListener(onToFullscreenClickListenerCaptor.capture())
         verify(decor).setOnToSplitScreenClickListener(onToSplitScreenClickListenerCaptor.capture())
         verify(decor).setOpenInBrowserClickListener(onOpenInBrowserClickListener.capture())
+        verify(decor).setCaptionListeners(
+                onCaptionButtonClickListener.capture(), any(), any(), any())
         return decor
     }