EDIT

/**

 *

 */

package eu.etaxonomy.dataportal.junit;

import java.lang.annotation.ElementType;

import java.lang.annotation.Inherited;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import org.junit.runner.Runner;

import org.junit.runner.notification.RunNotifier;

import org.junit.runners.BlockJUnit4ClassRunner;

import org.junit.runners.Suite;

import org.junit.runners.model.FrameworkMethod;

import org.junit.runners.model.InitializationError;

import org.junit.runners.model.Statement;

import eu.etaxonomy.dataportal.DataPortalContext;

/**

 * @author a.kohlbecker

 *

 */

public class DataPortalContextSuite extends Suite{

	/**

	 * Only to be used for test classes which extend {@link CdmDataPortalTestBase}

	 *

	 * @author a.kohlbecker

	 */

	@Retention(RetentionPolicy.RUNTIME)

	@Target(ElementType.TYPE)

	@Inherited

	public @interface DataPortalContexts {

		/**

		 * @return an array of DataPortalContext to which the annotated test

		 *         class is applicable

		 */

		DataPortalContext[] value();

	}

	private final List<Runner> runners = new ArrayList<Runner>();

	private class TestClassRunnerWithDataPortalContext extends BlockJUnit4ClassRunner {

		private final DataPortalContext context;

		public TestClassRunnerWithDataPortalContext(Class<?> klass, DataPortalContext context) throws InitializationError {

			super(klass);

			this.context = context;

		}

		@Override

		public Object createTest() throws Exception {

			Object testClass = getTestClass().getOnlyConstructor().newInstance();

			((CdmDataPortalTestBase)testClass).setContext(context);

			return testClass;

		}

		@Override

		protected String getName() {

			return String.format("%s@%s", getTestClass().getName(), context.name());

		}

		@Override

		protected String testName(final FrameworkMethod method) {

			return String.format("%s@%s", method.getName(), context.name());

		}

		@Override

		protected Statement classBlock(RunNotifier notifier) {

			return childrenInvoker(notifier);

		}

		@Override

		protected void validateZeroArgConstructor(List<Throwable> errors) {

			super.validateZeroArgConstructor(errors);

			validateCdmDataPortalTestBase(errors);

		}

		protected void validateCdmDataPortalTestBase(List<Throwable> errors) {

			// constructor should have exactly one arg

			if ( ! CdmDataPortalTestBase.class.isAssignableFrom(getTestClass().getJavaClass()) ){

				String gripe= "Test class must be a subclass of " + CdmDataPortalTestBase.class.getName();

				errors.add(new Exception(gripe));

			}

		}

	}

	/**

	 * Only called reflectively. Do not use programmatically.

	 */

	public DataPortalContextSuite(Class<?> klass) throws InitializationError {

		super(klass, Collections.<Runner>emptyList());

		DataPortalContexts dataPortalContextsAnotation = getTestClass().getJavaClass().getAnnotation(DataPortalContexts.class);

		for (DataPortalContext cntxt : dataPortalContextsAnotation.value()) {

			runners.add(new TestClassRunnerWithDataPortalContext(klass, cntxt));

		}

	}

	@Override

	protected List<Runner> getChildren() {

		return runners;

	}

}