| // Copyright 2016 The Bazel Authors. All Rights Reserved. |
| // |
| // 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.google.testing.junit.runner.junit4; |
| |
| import com.google.testing.junit.runner.util.Factory; |
| import java.io.PrintStream; |
| |
| /** |
| * A factory that supplies a stdout {@link PrintStream} for testing purposes. |
| */ |
| public final class TestModuleProvideStdoutStreamFactory implements Factory<PrintStream> { |
| private final JUnit4RunnerTest.TestModule module; |
| |
| public TestModuleProvideStdoutStreamFactory( |
| JUnit4RunnerTest.TestModule module) { |
| assert module != null; |
| this.module = module; |
| } |
| |
| @Override |
| public PrintStream get() { |
| PrintStream printStream = module.provideStdoutStream(); |
| if (printStream == null) { |
| throw new NullPointerException(); |
| } |
| return printStream; |
| } |
| |
| public static Factory<PrintStream> create(JUnit4RunnerTest.TestModule module) { |
| return new TestModuleProvideStdoutStreamFactory(module); |
| } |
| } |