| /* |
| * Copyright (C) 2016 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.storagemanager.utils; |
| |
| import android.content.Context; |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| import org.mockito.stubbing.Answer; |
| import org.robolectric.RobolectricTestRunner; |
| import org.robolectric.RuntimeEnvironment; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.ArgumentMatchers.anyInt; |
| import static org.mockito.ArgumentMatchers.eq; |
| import static org.mockito.Mockito.never; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| |
| @RunWith(RobolectricTestRunner.class) |
| public class PreferenceListCacheTest { |
| @Mock private PreferenceScreen mGroup; |
| private PreferenceListCache mCache; |
| private Context mContext; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| mContext = RuntimeEnvironment.application; |
| } |
| |
| @Test |
| public void testEmptyPreferenceGroup() { |
| setupMockPreferenceGroup(new Preference[0]); |
| |
| mCache = new PreferenceListCache(mGroup); |
| mCache.removeCachedPrefs(); |
| |
| verify(mGroup, never()).removePreference(any(Preference.class)); |
| } |
| |
| @Test |
| public void testCacheAndRestoreAllPreferences() { |
| Preference first = createPreference("first"); |
| Preference second = createPreference("second"); |
| Preference third = createPreference("third"); |
| Preference[] preferences = new Preference[] {first, second, third}; |
| setupMockPreferenceGroup(preferences); |
| |
| mCache = new PreferenceListCache(mGroup); |
| assertEquals(first, mCache.getCachedPreference("first")); |
| assertEquals(second, mCache.getCachedPreference("second")); |
| assertEquals(third, mCache.getCachedPreference("third")); |
| |
| mCache.removeCachedPrefs(); |
| verify(mGroup, never()).removePreference(any(Preference.class)); |
| } |
| |
| @Test |
| public void testRestoreSomePreferences() { |
| Preference first = createPreference("first"); |
| Preference second = createPreference("second"); |
| Preference third = createPreference("third"); |
| Preference[] preferences = new Preference[] {first, second, third}; |
| setupMockPreferenceGroup(preferences); |
| |
| mCache = new PreferenceListCache(mGroup); |
| assertEquals(first, mCache.getCachedPreference("first")); |
| assertEquals(second, mCache.getCachedPreference("second")); |
| |
| mCache.removeCachedPrefs(); |
| |
| // Because the third preference was left, it should have been removed by the last call. |
| verify(mGroup).removePreference(eq(third)); |
| } |
| |
| @Test |
| public void testRestoreZeroPreferences() { |
| Preference first = createPreference("first"); |
| Preference second = createPreference("second"); |
| Preference third = createPreference("third"); |
| Preference[] preferences = new Preference[] {first, second, third}; |
| setupMockPreferenceGroup(preferences); |
| |
| mCache = new PreferenceListCache(mGroup); |
| mCache.removeCachedPrefs(); |
| |
| // Because none of the cached preferences were used, the call should remove all three |
| // preferences from the group. |
| verify(mGroup).removePreference(eq(first)); |
| verify(mGroup).removePreference(eq(second)); |
| verify(mGroup).removePreference(eq(third)); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testKeyCollisionThrows() { |
| Preference first = createPreference("first"); |
| Preference second = createPreference("first"); |
| Preference third = createPreference("first"); |
| Preference[] preferences = new Preference[] {first, second, third}; |
| setupMockPreferenceGroup(preferences); |
| when(mGroup.getKey()).thenReturn("Group"); |
| |
| mCache = new PreferenceListCache(mGroup); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testEmptyKeyThrows() { |
| Preference first = createPreference(""); |
| Preference[] preferences = new Preference[] {first}; |
| setupMockPreferenceGroup(preferences); |
| when(mGroup.getKey()).thenReturn("Group"); |
| |
| mCache = new PreferenceListCache(mGroup); |
| } |
| |
| private Preference createPreference(String key) { |
| Preference newPreference = new Preference(mContext); |
| newPreference.setKey(key); |
| return newPreference; |
| } |
| |
| private void setupMockPreferenceGroup(Preference[] preferences) { |
| when(mGroup.getPreferenceCount()).thenReturn(preferences.length); |
| when(mGroup.getPreference(anyInt())) |
| .thenAnswer( |
| (Answer<Preference>) |
| invocation -> { |
| int index = (int) invocation.getArguments()[0]; |
| return preferences[index]; |
| }); |
| } |
| } |