diff --git a/quickstep/res/layout/overview_clear_all_button.xml b/quickstep/res/layout/overview_clear_all_button.xml
index ea7a494..fc06ba0 100644
--- a/quickstep/res/layout/overview_clear_all_button.xml
+++ b/quickstep/res/layout/overview_clear_all_button.xml
@@ -17,6 +17,7 @@
 <com.android.quickstep.views.ClearAllButton
     xmlns:android="http://schemas.android.com/apk/res/android"
     style="@android:style/Widget.DeviceDefault.Button.Borderless"
+    android:id="@+id/clear_all"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:text="@string/recents_clear_all"
diff --git a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
index 8f7cf92..9b38b2e 100644
--- a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
+++ b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
@@ -176,6 +176,13 @@
         // Test UIDevice.pressHome, once we are in AllApps.
         mDevice.pressHome();
         waitForState("Launcher internal state didn't switch to Home", LauncherState.NORMAL);
+
+        // Test dismissing all tasks.
+        mLauncher.getWorkspace().switchToOverview().dismissAllTasks();
+        waitForState("Launcher internal state didn't switch to Home", LauncherState.NORMAL);
+        executeOnLauncher(
+                launcher -> assertEquals("Still have tasks after dismissing all",
+                        0, getTaskCount(launcher)));
     }
 
     private int getCurrentOverviewPage(Launcher launcher) {
diff --git a/tests/tapl/com/android/launcher3/tapl/BaseOverview.java b/tests/tapl/com/android/launcher3/tapl/BaseOverview.java
index 5f60113..0ff3070 100644
--- a/tests/tapl/com/android/launcher3/tapl/BaseOverview.java
+++ b/tests/tapl/com/android/launcher3/tapl/BaseOverview.java
@@ -17,6 +17,7 @@
 package com.android.launcher3.tapl;
 
 import androidx.annotation.NonNull;
+import androidx.test.uiautomator.BySelector;
 import androidx.test.uiautomator.Direction;
 import androidx.test.uiautomator.UiObject2;
 
@@ -28,6 +29,7 @@
  */
 public class BaseOverview extends LauncherInstrumentation.VisibleContainer {
     private static final int DEFAULT_FLING_SPEED = 15000;
+    private static final int FLINGS_FOR_DISMISS_LIMIT = 5;
 
     BaseOverview(LauncherInstrumentation launcher) {
         super(launcher);
@@ -50,6 +52,22 @@
     }
 
     /**
+     * Dismissed all tasks by scrolling to Clear-all button and pressing it.
+     */
+    public Workspace dismissAllTasks() {
+        final BySelector clearAllSelector = mLauncher.getLauncherObjectSelector("clear_all");
+        for (int i = 0;
+                i < FLINGS_FOR_DISMISS_LIMIT
+                        && verifyActiveContainer().findObject(clearAllSelector) == null;
+                ++i) {
+            flingForward();
+        }
+
+        mLauncher.getObjectInContainer(verifyActiveContainer(), clearAllSelector).click();
+        return new Workspace(mLauncher);
+    }
+
+    /**
      * Flings backward (right) and waits the fling's end.
      */
     public void flingBackward() {