Add a functional test for minimizing a window

Flag: com.android.window.flags.enable_minimize_button
Bug: 373973157
Test: atest PlatformScenarioTests:com.android.wm.shell.functional.MinimizeAppWindowTest
Change-Id: I55b8681b4ce307f7669521085ecdca1fb711acd7

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/FlickerTests/test-apps/app-helpers/src/com/android/server/wm/flicker/helpers/DesktopModeAppHelper.kt b/tests/FlickerTests/test-apps/app-helpers/src/com/android/server/wm/flicker/helpers/DesktopModeAppHelper.kt
index 1c6bd1114c1c..332b9b832037 100644
--- a/tests/FlickerTests/test-apps/app-helpers/src/com/android/server/wm/flicker/helpers/DesktopModeAppHelper.kt
+++ b/tests/FlickerTests/test-apps/app-helpers/src/com/android/server/wm/flicker/helpers/DesktopModeAppHelper.kt
@@ -132,6 +132,24 @@ open class DesktopModeAppHelper(private val innerHelper: IStandardAppHelper) :
         wmHelper.StateSyncBuilder().withAppTransitionIdle().waitForAndVerify()
     }
 
+    private fun getMinimizeButtonForTheApp(caption: UiObject2?): UiObject2 {
+        return caption
+            ?.children
+            ?.find { it.resourceName.endsWith(MINIMIZE_BUTTON_VIEW) }
+            ?: error("Unable to find resource $MINIMIZE_BUTTON_VIEW\n")
+    }
+
+    fun minimizeDesktopApp(wmHelper: WindowManagerStateHelper, device: UiDevice) {
+        val caption = getCaptionForTheApp(wmHelper, device)
+        val minimizeButton = getMinimizeButtonForTheApp(caption)
+        minimizeButton.click()
+        wmHelper
+            .StateSyncBuilder()
+            .withAppTransitionIdle()
+            .withWindowSurfaceDisappeared(innerHelper)
+            .waitForAndVerify()
+    }
+
     /** Open maximize menu and click snap resize button on the app header for the given app. */
     fun snapResizeDesktopApp(
         wmHelper: WindowManagerStateHelper,
@@ -400,6 +418,7 @@ open class DesktopModeAppHelper(private val innerHelper: IStandardAppHelper) :
         const val DESKTOP_MODE_BUTTON: String = "desktop_button"
         const val SNAP_LEFT_BUTTON: String = "maximize_menu_snap_left_button"
         const val SNAP_RIGHT_BUTTON: String = "maximize_menu_snap_right_button"
+        const val MINIMIZE_BUTTON_VIEW: String = "minimize_window"
         val caption: BySelector
             get() = By.res(SYSTEMUI_PACKAGE, CAPTION)
     }