| /* |
| * Copyright (C) 2015 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 android.os; |
| |
| import androidx.test.filters.SmallTest; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.Locale; |
| |
| public class LocaleListTest extends TestCase { |
| @SmallTest |
| public void testConstructor() throws Exception { |
| LocaleList ll; |
| ll = new LocaleList(Locale.forLanguageTag("fr"), null); |
| assertEquals("fr", ll.toLanguageTags()); |
| |
| ll = new LocaleList(Locale.forLanguageTag("fr"), LocaleList.getEmptyLocaleList()); |
| assertEquals("fr", ll.toLanguageTags()); |
| |
| ll = new LocaleList(Locale.forLanguageTag("fr"), LocaleList.forLanguageTags("fr")); |
| assertEquals("fr", ll.toLanguageTags()); |
| |
| ll = new LocaleList(Locale.forLanguageTag("fr"), LocaleList.forLanguageTags("de")); |
| assertEquals("fr,de", ll.toLanguageTags()); |
| |
| ll = new LocaleList(Locale.forLanguageTag("fr"), LocaleList.forLanguageTags("de,ja")); |
| assertEquals("fr,de,ja", ll.toLanguageTags()); |
| |
| ll = new LocaleList(Locale.forLanguageTag("fr"), LocaleList.forLanguageTags("de,fr,ja")); |
| assertEquals("fr,de,ja", ll.toLanguageTags()); |
| |
| ll = new LocaleList(Locale.forLanguageTag("fr"), LocaleList.forLanguageTags("de,fr")); |
| assertEquals("fr,de", ll.toLanguageTags()); |
| |
| ll = new LocaleList(Locale.forLanguageTag("fr"), LocaleList.forLanguageTags("fr,de")); |
| assertEquals("fr,de", ll.toLanguageTags()); |
| } |
| |
| @SmallTest |
| public void testConstructor_nullThrows() throws Exception { |
| try { |
| final LocaleList ll = new LocaleList(null, LocaleList.getEmptyLocaleList()); |
| fail("Constructing with locale and locale list should throw with a null locale."); |
| } catch (Throwable e) { |
| assertEquals(NullPointerException.class, e.getClass()); |
| } |
| } |
| |
| @SmallTest |
| public void testGetDefault_localeSetDefaultCalledButNoChangeNecessary() throws Exception { |
| final Locale originalLocale = Locale.getDefault(); |
| final LocaleList originalLocaleList = LocaleList.getDefault(); |
| final int originalLocaleIndex = originalLocaleList.indexOf(originalLocale); |
| |
| // This simulates a situation potentially set by the system processes |
| LocaleList.setDefault(LocaleList.forLanguageTags("ae,en,ja"), 1 /* en */); |
| |
| // check our assumptions about input |
| assertEquals("en", Locale.getDefault().toLanguageTag()); |
| final LocaleList firstResult = LocaleList.getDefault(); |
| assertEquals("ae,en,ja", LocaleList.getDefault().toLanguageTags()); |
| |
| Locale.setDefault(Locale.forLanguageTag("ae")); |
| assertSame(firstResult, LocaleList.getDefault()); |
| |
| // restore the original values |
| LocaleList.setDefault(originalLocaleList, originalLocaleIndex); |
| } |
| } |