diff --git a/packages/CarSystemUI/tests/src/com/android/systemui/car/navigationbar/CarNavigationBarControllerTest.java b/packages/CarSystemUI/tests/src/com/android/systemui/car/navigationbar/CarNavigationBarControllerTest.java
index 0b3ac2a98e3a6..5b0bb35ad4911 100644
--- a/packages/CarSystemUI/tests/src/com/android/systemui/car/navigationbar/CarNavigationBarControllerTest.java
+++ b/packages/CarSystemUI/tests/src/com/android/systemui/car/navigationbar/CarNavigationBarControllerTest.java
@@ -253,6 +253,28 @@ public class CarNavigationBarControllerTest extends SysuiTestCase {
         assertThat(window1).isEqualTo(window2);
     }
 
+    @Test
+    public void testSetTopWindowVisibility_setTrue_isVisible() {
+        mTestableResources.addOverride(R.bool.config_enableTopNavigationBar, true);
+        mCarNavigationBar = createNavigationBarController();
+
+        ViewGroup window = mCarNavigationBar.getTopWindow();
+        mCarNavigationBar.setTopWindowVisibility(View.VISIBLE);
+
+        assertThat(window.getVisibility()).isEqualTo(View.VISIBLE);
+    }
+
+    @Test
+    public void testSetTopWindowVisibility_setFalse_isGone() {
+        mTestableResources.addOverride(R.bool.config_enableTopNavigationBar, true);
+        mCarNavigationBar = createNavigationBarController();
+
+        ViewGroup window = mCarNavigationBar.getTopWindow();
+        mCarNavigationBar.setTopWindowVisibility(View.GONE);
+
+        assertThat(window.getVisibility()).isEqualTo(View.GONE);
+    }
+
     @Test
     public void testSetBottomWindowVisibility_setTrue_isVisible() {
         mTestableResources.addOverride(R.bool.config_enableBottomNavigationBar, true);