GdxTestRunner.java

/*******************************************************************************
 * Copyright 2015 See AUTHORS file.
 *
 * 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 de.tomgrill.gdxtesting;

import java.util.HashMap;
import java.util.Map;

import org.junit.runner.notification.RunNotifier;
import org.junit.runners.BlockJUnit4ClassRunner;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.InitializationError;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import static org.mockito.Mockito.mock;

import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.backends.headless.HeadlessApplication;
import com.badlogic.gdx.backends.headless.HeadlessApplicationConfiguration;

public class GdxTestRunner extends BlockJUnit4ClassRunner implements ApplicationListener {

	private Map<FrameworkMethod, RunNotifier> invokeInRender = new HashMap<FrameworkMethod, RunNotifier>();

	public GdxTestRunner(Class<?> klass) throws InitializationError {
		super(klass);
		HeadlessApplicationConfiguration conf = new HeadlessApplicationConfiguration();

		new HeadlessApplication(this, conf);
		Gdx.gl = mock(GL20.class);
	}

	@Override
	public void create() {
	}

	@Override
	public void resume() {
	}

	@Override
	public void render() {
		synchronized (invokeInRender) {
			for (Map.Entry<FrameworkMethod, RunNotifier> each : invokeInRender.entrySet()) {
				super.runChild(each.getKey(), each.getValue());
			}
			invokeInRender.clear();
		}
	}

	@Override
	public void resize(int width, int height) {
	}

	@Override
	public void pause() {
	}

	@Override
	public void dispose() {
	}

	@Override
	protected void runChild(FrameworkMethod method, RunNotifier notifier) {
		synchronized (invokeInRender) {
			// add for invoking in render phase, where gl context is available
			invokeInRender.put(method, notifier);
		}
		// wait until that test was invoked
		waitUntilInvokedInRenderMethod();
	}

	/**
	    *
	    */
	private void waitUntilInvokedInRenderMethod() {
		try {
			while (true) {
				Thread.sleep(10);
				synchronized (invokeInRender) {
					if (invokeInRender.isEmpty())
						break;
				}
			}
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}

}