diff --git a/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java b/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
index dfbae657dd..b4b8c5b82c 100644
--- a/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
+++ b/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
@@ -198,6 +198,12 @@ public class QuickstepTestInformationHandler extends TestInformationHandler {
                             .unstashBubbleBarIfStashed();
                 });
                 return response;
+            case TestProtocol.REQUEST_INJECT_FAKE_TRACKPAD:
+                runOnTISBinder(tisBinder -> tisBinder.injectFakeTrackpadForTesting());
+                return response;
+            case TestProtocol.REQUEST_EJECT_FAKE_TRACKPAD:
+                runOnTISBinder(tisBinder -> tisBinder.ejectFakeTrackpadForTesting());
+                return response;
         }
 
         return super.call(method, arg, extras);
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index b153396154..58bb8fc7c4 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -85,6 +85,7 @@ import androidx.annotation.BinderThread;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
+import androidx.annotation.VisibleForTesting;
 
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.ConstantItem;
@@ -399,6 +400,25 @@ public class TouchInteractionService extends Service {
             return tis.mTaskbarManager;
         }
 
+        @VisibleForTesting
+        public void injectFakeTrackpadForTesting() {
+            TouchInteractionService tis = mTis.get();
+            if (tis == null) return;
+            tis.mTrackpadsConnected.add(1000);
+            tis.initInputMonitor("tapl testing");
+        }
+
+        @VisibleForTesting
+        public void ejectFakeTrackpadForTesting() {
+            TouchInteractionService tis = mTis.get();
+            if (tis == null) return;
+            tis.mTrackpadsConnected.clear();
+            // This method destroys the current input monitor if set up, and only init a new one
+            // in 3-button mode if {@code mTrackpadsConnected} is not empty. So in other words,
+            // it will destroy the input monitor.
+            tis.initInputMonitor("tapl testing");
+        }
+
         /**
          * Sets whether a predictive back-to-home animation is in progress in the device state
          */
diff --git a/quickstep/tests/src/com/android/quickstep/TaplTestsTrackpad.java b/quickstep/tests/src/com/android/quickstep/TaplTestsTrackpad.java
index 106e590e16..2c23f867cb 100644
--- a/quickstep/tests/src/com/android/quickstep/TaplTestsTrackpad.java
+++ b/quickstep/tests/src/com/android/quickstep/TaplTestsTrackpad.java
@@ -37,6 +37,7 @@ import com.android.launcher3.util.rule.TestStabilityRule;
 import com.android.quickstep.NavigationModeSwitchRule.NavigationModeSwitch;
 
 import org.junit.After;
+import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -47,14 +48,20 @@ public class TaplTestsTrackpad extends AbstractQuickStepTest {
     private static final String READ_DEVICE_CONFIG_PERMISSION =
             "android.permission.READ_DEVICE_CONFIG";
 
+    @Before
+    public void setup() {
+        mLauncher.injectFakeTrackpad();
+    }
+
     @After
     public void tearDown() {
+        mLauncher.ejectFakeTrackpad();
         mLauncher.setTrackpadGestureType(TrackpadGestureType.NONE);
     }
 
     @Test
     @PortraitLandscape
-    @NavigationModeSwitch(mode = ZERO_BUTTON)
+    @NavigationModeSwitch
     public void goHome() throws Exception {
         assumeTrue(mLauncher.isTablet());
 
@@ -87,7 +94,7 @@ public class TaplTestsTrackpad extends AbstractQuickStepTest {
 
     @Test
     @PortraitLandscape
-    @NavigationModeSwitch(mode = ZERO_BUTTON)
+    @NavigationModeSwitch
     @ScreenRecordRule.ScreenRecord // b/336606166
     @TestStabilityRule.Stability(flavors = LOCAL | PLATFORM_POSTSUBMIT) // b/336606166
     public void switchToOverview() throws Exception {
@@ -100,7 +107,7 @@ public class TaplTestsTrackpad extends AbstractQuickStepTest {
 
     @Test
     @PortraitLandscape
-    @NavigationModeSwitch(mode = ZERO_BUTTON)
+    @NavigationModeSwitch
     public void testAllAppsFromHome() throws Exception {
         assumeTrue(mLauncher.isTablet());
 
@@ -110,8 +117,8 @@ public class TaplTestsTrackpad extends AbstractQuickStepTest {
     }
 
     @Test
-    @NavigationModeSwitch(mode = ZERO_BUTTON)
     @PortraitLandscape
+    @NavigationModeSwitch
     public void testQuickSwitchFromHome() throws Exception {
         assumeTrue(mLauncher.isTablet());
 
diff --git a/tests/multivalentTests/shared/com/android/launcher3/testing/shared/TestProtocol.java b/tests/multivalentTests/shared/com/android/launcher3/testing/shared/TestProtocol.java
index c3b7a2af4f..d20d0fac2c 100644
--- a/tests/multivalentTests/shared/com/android/launcher3/testing/shared/TestProtocol.java
+++ b/tests/multivalentTests/shared/com/android/launcher3/testing/shared/TestProtocol.java
@@ -183,6 +183,9 @@ public final class TestProtocol {
     public static final String REQUEST_UNSTASH_BUBBLE_BAR_IF_STASHED =
             "unstash-bubble-bar-if-stashed";
 
+    public static final String REQUEST_INJECT_FAKE_TRACKPAD = "inject-fake-trackpad";
+    public static final String REQUEST_EJECT_FAKE_TRACKPAD = "eject-fake-trackpad";
+
     /** Logs {@link Log#d(String, String)} if {@link #sDebugTracing} is true. */
     public static void testLogD(String tag, String message) {
         if (!sDebugTracing) {
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index d85f6303d9..f02a0c2296 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -2318,6 +2318,14 @@ public final class LauncherInstrumentation {
         getTestInfo(TestProtocol.REQUEST_UNSTASH_BUBBLE_BAR_IF_STASHED);
     }
 
+    public void injectFakeTrackpad() {
+        getTestInfo(TestProtocol.REQUEST_INJECT_FAKE_TRACKPAD);
+    }
+
+    public void ejectFakeTrackpad() {
+        getTestInfo(TestProtocol.REQUEST_EJECT_FAKE_TRACKPAD);
+    }
+
     /** Blocks the taskbar from automatically stashing based on time. */
     public void enableBlockTimeout(boolean enable) {
         getTestInfo(enable