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 package android.icu.cts.coverage.rules; 17 18 import android.icu.util.ULocale; 19 import org.junit.rules.MethodRule; 20 import org.junit.runners.model.FrameworkMethod; 21 import org.junit.runners.model.Statement; 22 23 /** 24 * Add this as a rule to a JUnit 4 class to support switching the {@link ULocale#getDefault()} for 25 * the duration of the test method. 26 * 27 * <p>Only affects test methods that are annotated with {@link ULocaleDefault}. 28 * 29 * @see ULocaleDefault 30 */ 31 @SuppressWarnings("deprecation") 32 public class ULocaleDefaultRule implements MethodRule { 33 34 @Override 35 public Statement apply(final Statement base, FrameworkMethod method, Object target) { 36 final ULocaleDefault annotation = method.getAnnotation(ULocaleDefault.class); 37 if (annotation == null) { 38 return base; 39 } else { 40 return new Statement() { 41 @Override 42 public void evaluate() throws Throwable { 43 ULocale previousDefault = ULocale.getDefault(); 44 try { 45 ULocale.setDefault(ULocale.forLanguageTag(annotation.languageTag())); 46 base.evaluate(); 47 } finally { 48 ULocale.setDefault(previousDefault); 49 } 50 } 51 }; 52 } 53 } 54 } 55
