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 android.icu.junit; 18 19 import org.junit.runners.ParentRunner; 20 import org.junit.runners.model.InitializationError; 21 22 /** 23 * Extends {@link ParentRunner} to prevent it from trying to create an instance of 24 * {@link org.junit.runners.model.TestClass} for the supplied {@code testClass} because that 25 * requires that the {@code testClass} has only a single constructor and at least one ICU test 26 * ({@code android.icu.dev.test.serializable.CoverageTest}) has more than one constructor. 27 * 28 * <p>This provides a dummy class and overrides the {@link #getName()} method to return the 29 * correct name. The consequence of this is that it is not possible to use JUnit 4 annotations 30 * related to the class, like {@link org.junit.BeforeClass}, {@link org.junit.ClassRule}, etc. 31 */ 32 abstract class IcuTestParentRunner<T> extends ParentRunner<T> { 33 34 private final Class<?> testClass; 35 36 IcuTestParentRunner(Class<?> testClass) throws InitializationError { 37 super(DummyTestClass.class); 38 this.testClass = testClass; 39 } 40 41 @Override 42 protected String getName() { 43 return testClass.getName(); 44 } 45 46 /** 47 * A dummy test class to pass to {@link ParentRunner} for it to validate and check for 48 * annotations. 49 * 50 * <p>Must be public. 51 */ 52 public static class DummyTestClass { 53 54 } 55 } 56
