EmptyTestRunner.java
/*
* Copyright (C) 2021 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 androidx.test.internal.runner;
/**
* A special runner to indicate that the class is not a valid test because it has no methods.
*
* <p>Ideally we would just default to the upstream JUnit behavior to handle this case, but for
* historical reasons this condition has been ignored when class path scanning for tests, and
* changing it now may introduce painful migration for users. See b/203614578
*/
public class EmptyTestRunner extends ErrorReportingRunner {
public EmptyTestRunner(Class<?> clazz) {
super(
clazz.getName(),
new RuntimeException(
String.format("Invalid test class '%s': No test methods found", clazz.getName())));
}
}