Add functional test for drag-to-maximize

This CL adds a functional test for drag-to-maximize. Note that the test
assumes that the feature is enabled on the device. If not, the test is
skipped.

Bug: 378396431
Flag: EXEMPT add test
Test: MaximizeAppWindowWithDragToTopDragZoneTest
Change-Id: I957b57b517b70bbbacd46aa675b5e66bf78ea89e

3 files changed, 109 insertions, 0 deletions

diff --git a/libs/WindowManager/Shell/tests/e2e/desktopmode/scenarios/src/com/android/wm/shell/functional/MaximizeAppWindowWithDragToTopDragZoneTest.kt b/libs/WindowManager/Shell/tests/e2e/desktopmode/scenarios/src/com/android/wm/shell/functional/MaximizeAppWindowWithDragToTopDragZoneTest.kt
new file mode 100644
index 000000000000..7e0b81a783c0
--- /dev/null
+++ b/libs/WindowManager/Shell/tests/e2e/desktopmode/scenarios/src/com/android/wm/shell/functional/MaximizeAppWindowWithDragToTopDragZoneTest.kt
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.wm.shell.functional
+
+import android.platform.test.annotations.Postsubmit
+import com.android.wm.shell.scenarios.MaximizeAppWindowWithDragToTopDragZone
+import org.junit.runner.RunWith
+import org.junit.runners.BlockJUnit4ClassRunner
+
+/* Functional test for [MaximizeAppWindowWithDragToTopDragZone]. */
+@RunWith(BlockJUnit4ClassRunner::class)
+@Postsubmit
+class MaximizeAppWindowWithDragToTopDragZoneTest : MaximizeAppWindowWithDragToTopDragZone()
diff --git a/libs/WindowManager/Shell/tests/e2e/desktopmode/scenarios/src/com/android/wm/shell/scenarios/MaximizeAppWindowWithDragToTopDragZone.kt b/libs/WindowManager/Shell/tests/e2e/desktopmode/scenarios/src/com/android/wm/shell/scenarios/MaximizeAppWindowWithDragToTopDragZone.kt
new file mode 100644
index 000000000000..a2b88f278ff2
--- /dev/null
+++ b/libs/WindowManager/Shell/tests/e2e/desktopmode/scenarios/src/com/android/wm/shell/scenarios/MaximizeAppWindowWithDragToTopDragZone.kt
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.wm.shell.scenarios
+
+import android.app.Instrumentation
+import android.tools.NavBar
+import android.tools.Rotation
+import android.tools.flicker.rules.ChangeDisplayOrientationRule
+import android.tools.traces.parsers.WindowManagerStateHelper
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.uiautomator.UiDevice
+import com.android.internal.R
+import com.android.launcher3.tapl.LauncherInstrumentation
+import com.android.server.wm.flicker.helpers.DesktopModeAppHelper
+import com.android.server.wm.flicker.helpers.SimpleAppHelper
+import com.android.window.flags.Flags
+import com.android.wm.shell.Utils
+import org.junit.After
+import org.junit.Assume
+import org.junit.Before
+import org.junit.Ignore
+import org.junit.Rule
+import org.junit.Test
+
+/**
+ * Base scenario test for maximizing a desktop app window by dragging it to the top drag zone.
+ */
+@Ignore("Test Base Class")
+abstract class MaximizeAppWindowWithDragToTopDragZone
+constructor(private val rotation: Rotation = Rotation.ROTATION_0) {
+    private val instrumentation: Instrumentation = InstrumentationRegistry.getInstrumentation()
+    private val tapl = LauncherInstrumentation()
+    private val wmHelper = WindowManagerStateHelper(instrumentation)
+    private val device = UiDevice.getInstance(instrumentation)
+    private val testApp = DesktopModeAppHelper(SimpleAppHelper(instrumentation))
+
+    @Rule @JvmField val testSetupRule = Utils.testSetupRule(NavBar.MODE_GESTURAL, rotation)
+
+    @Before
+    fun setup() {
+        Assume.assumeTrue(Flags.enableDesktopWindowingMode() && tapl.isTablet)
+        // Skip the test when the drag-to-maximize is disabled on this device.
+        Assume.assumeTrue(Flags.enableDragToMaximize() &&
+            instrumentation.context.resources.getBoolean(R.bool.config_dragToMaximizeInDesktopMode))
+        tapl.setEnableRotation(true)
+        tapl.setExpectedRotation(rotation.value)
+        ChangeDisplayOrientationRule.setRotation(rotation)
+        testApp.enterDesktopWithDrag(wmHelper, device)
+    }
+
+    @Test
+    open fun maximizeAppWithDragToTopDragZone() {
+        testApp.maximizeAppWithDragToTopDragZone(wmHelper, device)
+    }
+
+    @After
+    fun teardown() {
+        testApp.exit(wmHelper)
+    }
+}
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 332b9b832037..5dfe74700636 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
@@ -347,6 +347,14 @@ open class DesktopModeAppHelper(private val innerHelper: IStandardAppHelper) :
         waitForTransitionToFullscreen(wmHelper)
     }
 
+    /** Maximize an app by dragging the app handle to the top drag zone. */
+    fun maximizeAppWithDragToTopDragZone(
+        wmHelper: WindowManagerStateHelper,
+        device: UiDevice,
+    ) {
+        dragAppWindowToTopDragZone(wmHelper, device)
+    }
+
     private fun dragAppWindowToTopDragZone(wmHelper: WindowManagerStateHelper, device: UiDevice) {
         val windowRect = wmHelper.getWindowRegion(innerHelper).bounds
         val displayRect = getDisplayRect(wmHelper)