1 files changed, 41 insertions, 0 deletions
diff --git a/tests/tapl/com/android/launcher3/tapl/Background.java b/tests/tapl/com/android/launcher3/tapl/Background.java
index bcce8ef57..0dd3e775c 100644
--- a/tests/tapl/com/android/launcher3/tapl/Background.java
+++ b/tests/tapl/com/android/launcher3/tapl/Background.java
@@ -23,6 +23,7 @@ import android.os.SystemClock;
 import android.view.MotionEvent;
 
 import androidx.annotation.NonNull;
+import androidx.test.uiautomator.UiObject2;
 
 import com.android.launcher3.testing.TestProtocol;
 
@@ -114,6 +115,46 @@ public class Background extends LauncherInstrumentation.VisibleContainer {
         }
     }
 
+    /**
+     * Swipes right or double presses the square button to switch to the previous app.
+     */
+    public Background quickSwitchToPreviousApp() {
+        try (LauncherInstrumentation.Closable c = mLauncher.addContextLayer(
+                "want to quick switch to the previous app")) {
+            verifyActiveContainer();
+            quickSwitchToPreviousApp(getExpectedStateForQuickSwitch());
+            return new Background(mLauncher);
+        }
+    }
+
+    protected int getExpectedStateForQuickSwitch() {
+        return BACKGROUND_APP_STATE_ORDINAL;
+    }
+
+    protected void quickSwitchToPreviousApp(int expectedState) {
+        switch (mLauncher.getNavigationModel()) {
+            case ZERO_BUTTON:
+                // Fall through, zero button and two button modes behave the same.
+            case TWO_BUTTON: {
+                // Swipe from the bottom left to the bottom right of the screen.
+                final int startX = 0;
+                final int startY = getSwipeStartY();
+                final int endX = mLauncher.getDevice().getDisplayWidth();
+                final int endY = startY;
+                mLauncher.swipeToState(startX, startY, endX, endY, 20, expectedState);
+                break;
+            }
+
+            case THREE_BUTTON:
+                // Double press the recents button.
+                UiObject2 recentsButton = mLauncher.waitForSystemUiObject("recent_apps");
+                recentsButton.click();
+                mLauncher.getOverview();
+                recentsButton.click();
+                break;
+        }
+    }
+
     protected String getSwipeHeightRequestName() {
         return TestProtocol.REQUEST_BACKGROUND_TO_OVERVIEW_SWIPE_HEIGHT;
     }