Add VibrationPreferenceControler to check availability

Add check to Vibrator.hasVibrator() to the "Vibration & haptics"
settings page.

Bug: 178530831
Test: VibrationPreferenceControllerTest
Change-Id: Ia574d59ad086dd273a9a4ca9d3b472bf23e3684a

tests/robotests/src/com/android/settings/accessibility/VibrationPreferenceControllerTest.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2022 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.settings.accessibility;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+import static com.android.settings.core.BasePreferenceController.UNSUPPORTED_ON_DEVICE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.Vibrator;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+
+@RunWith(RobolectricTestRunner.class)
+public class VibrationPreferenceControllerTest {
+
+    private static final String PREFERENCE_KEY = "preference_key";
+
+    @Mock private Vibrator mVibrator;
+
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        when(mContext.getSystemService(Context.VIBRATOR_SERVICE)).thenReturn(mVibrator);
+    }
+
+    @Test
+    public void verifyConstants() {
+        VibrationPreferenceController controller =
+                new VibrationPreferenceController(mContext, PREFERENCE_KEY);
+        assertThat(controller.getPreferenceKey()).isEqualTo(PREFERENCE_KEY);
+    }
+
+    @Test
+    public void getAvailabilityStatus_noVibrator_returnUnsupportedOnDevice() {
+        when(mVibrator.hasVibrator()).thenReturn(false);
+        VibrationPreferenceController controller =
+                new VibrationPreferenceController(mContext, PREFERENCE_KEY);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_withVibrator_returnAvailable() {
+        when(mVibrator.hasVibrator()).thenReturn(true);
+        VibrationPreferenceController controller =
+                new VibrationPreferenceController(mContext, PREFERENCE_KEY);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+}