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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.language;
     18 
     19 import static com.google.common.truth.Truth.assertThat;
     20 import static org.mockito.Mockito.mock;
     21 import static org.mockito.Mockito.spy;
     22 import static org.mockito.Mockito.when;
     23 
     24 import android.content.Context;
     25 import android.speech.tts.TextToSpeech;
     26 import android.speech.tts.TtsEngines;
     27 import android.support.v7.preference.Preference;
     28 import android.support.v7.preference.PreferenceScreen;
     29 
     30 import com.android.settings.testutils.SettingsRobolectricTestRunner;
     31 
     32 import org.junit.Before;
     33 import org.junit.Test;
     34 import org.junit.runner.RunWith;
     35 import org.mockito.Mock;
     36 import org.mockito.MockitoAnnotations;
     37 import org.robolectric.RuntimeEnvironment;
     38 import org.robolectric.annotation.Config;
     39 
     40 import java.util.ArrayList;
     41 import java.util.List;
     42 
     43 @RunWith(SettingsRobolectricTestRunner.class)
     44 public class TtsPreferenceControllerTest {
     45 
     46     @Mock
     47     private TtsEngines mTtsEngines;
     48     @Mock
     49     private PreferenceScreen mScreen;
     50 
     51     private Context mContext;
     52     private TtsPreferenceController mController;
     53     private Preference mPreference;
     54 
     55     @Before
     56     public void setUp() {
     57         MockitoAnnotations.initMocks(this);
     58         mContext = spy(RuntimeEnvironment.application);
     59 
     60         mController = new TtsPreferenceController(mContext, mTtsEngines);
     61         mPreference = new Preference(RuntimeEnvironment.application);
     62         mPreference.setKey(mController.getPreferenceKey());
     63         when(mScreen.findPreference(mPreference.getKey())).thenReturn(mPreference);
     64     }
     65 
     66     @Test
     67     public void testIsAvailable_ttsEngineEmpty_shouldReturnFalse() {
     68         // Not available when there is no engine.
     69         when(mTtsEngines.getEngines()).thenReturn(new ArrayList<>());
     70 
     71         assertThat(mController.isAvailable()).isFalse();
     72 
     73         mController.displayPreference(mScreen);
     74 
     75         assertThat(mPreference.isVisible()).isFalse();
     76     }
     77 
     78     @Test
     79     public void testIsAvailable_ttsEngineInstalled_shouldReturnTrue() {
     80         final List<TextToSpeech.EngineInfo> infolist = new ArrayList<>();
     81         infolist.add(mock(TextToSpeech.EngineInfo.class));
     82         when(mTtsEngines.getEngines()).thenReturn(infolist);
     83 
     84         assertThat(mController.isAvailable()).isTrue();
     85 
     86         mController.displayPreference(mScreen);
     87 
     88         assertThat(mPreference.isVisible()).isTrue();
     89     }
     90 
     91     @Test
     92     @Config(qualifiers = "mcc999")
     93     public void testIsAvailable_ifDisabled_shouldReturnFalse() {
     94         assertThat(mController.isAvailable()).isFalse();
     95     }
     96 }
     97