Demo TestDescriptionTest arbeiten mit Annotations

TestDescriptionTest.java

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

import org.junit.Test;

import static org.junit.Assert.*;

public class TestDescriptionTest {

	@TestDescription("Value Attribut setzen")
	public void testDescriptionMethod_Value() {}

	@TestDescription(titel = "Test Beispiel", description = "Ein Test als Beispiel")
	public void testDescriptionMethod_TitelDescription() {}

	@TestDescription(prio = 5)
	public void testDescriptionMethod_Prio() {}

	@Test
	public void testTestDescription_Value() throws Exception {
		Method method = getMethodByName("testDescriptionMethod_Value");
		TestDescription description = method.getAnnotation(TestDescription.class);
		assertEquals("Value Attribut setzen", description.value());
	}

	@Test
	public void testTestDescription_Titel() throws Exception {
		Method method = getMethodByName("testDescriptionMethod_TitelDescription");
		TestDescription description = method.getAnnotation(TestDescription.class);
		assertEquals("Test Beispiel", description.titel());
	}

	@Test
	public void testTestDescription_Description() throws Exception {
		Method method = getMethodByName("testDescriptionMethod_TitelDescription");
		TestDescription description = method.getAnnotation(TestDescription.class);
		assertEquals("Ein Test als Beispiel", description.description());
	}

	public Method[] findMethodsWithTestDescription(Class<?> testClass) {
		Method[] methods = testClass.getMethods();
		List<Method> methodsWithTestDescription = new ArrayList<Method>();
		for (Method method : methods) {
			TestDescription annotation = method
					.getAnnotation(TestDescription.class);
			if (annotation != null) {
				methodsWithTestDescription.add(method);
			}
		}
		return methodsWithTestDescription
				.toArray(new Method[methodsWithTestDescription.size()]);
	}

	@Test
	public void testDescriptionAnnotation() throws Exception {
		Method[] expectedMethods = new Method[] {
				getMethodByName("testDescriptionMethod_Value"),
				getMethodByName("testDescriptionMethod_TitelDescription"),
				getMethodByName("testDescriptionMethod_Prio")
		};
		assertArrayEquals(
				expectedMethods, 
				findMethodsWithTestDescription(TestDescriptionTest.class));
	}

	Method getMethodByName(String name) throws NoSuchMethodException {
		return TestDescriptionTest.class
				.getMethod(name);
	}

}