ReplayAllForExpectNewTest.java

/*
 * Copyright 2008 the original author or authors.
 *
 * 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 samples.junit4.replayall;

import org.easymock.EasyMock;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import samples.Service;
import samples.expectnew.ExpectNewDemo;
import samples.expectnew.ExpectNewServiceUser;
import samples.newmocking.MyClass;

import java.io.IOException;

import static org.easymock.EasyMock.expect;
import static org.junit.Assert.*;
import static org.powermock.api.easymock.PowerMock.*;

/**
 * The purpose of this test is to try-out the replay all functionality in
 * PowerMock in combination with expectNew.
 */
@RunWith(PowerMockRunner.class)
@PrepareForTest( { MyClass.class, ExpectNewDemo.class })
public class ReplayAllForExpectNewTest {

	@Test
	public void testNewWithCheckedException() throws Exception {
		ExpectNewDemo tested = new ExpectNewDemo();

		final String expectedFailMessage = "testing checked exception";
		expectNew(MyClass.class).andThrow(new IOException(expectedFailMessage));

		replayAll();

		try {
			tested.throwExceptionAndWrapInRunTimeWhenInvoction();
			fail("Should throw a checked Exception!");
		} catch (RuntimeException e) {
			assertTrue(e.getCause() instanceof IOException);
			assertEquals(expectedFailMessage, e.getMessage());
		}

		verifyAll();
	}

	@Test
	public void testGetMessage() throws Exception {
		ExpectNewDemo tested = new ExpectNewDemo();
		MyClass myClassMock = createMock(MyClass.class);

		expectNew(MyClass.class).andReturn(myClassMock);

		String expected = "Hello altered World";
		expect(myClassMock.getMessage()).andReturn("Hello altered World");

		replayAll();

		String actual = tested.getMessage();

		verifyAll();
		assertEquals("Expected and actual did not match", expected, actual);
	}

	@Test
	public void testReplayAllWithExpectNewWhenTheClassBeingConstructedIsNotPreparedForTest() throws Exception {
		final int numberOfTimes = 2;
		final String expected = "used";

		ExpectNewDemo tested = new ExpectNewDemo();
		ExpectNewServiceUser expectNewServiceImplMock = createMock(ExpectNewServiceUser.class);
		Service serviceMock = createMock(Service.class);

		expectNew(ExpectNewServiceUser.class, serviceMock, numberOfTimes).andReturn(expectNewServiceImplMock);
		expect(expectNewServiceImplMock.useService()).andReturn(expected);

		replayAll();

		assertEquals(expected, tested.newWithArguments(serviceMock, numberOfTimes));

		verifyAll();
	}

	@Test
	public void testReplayAllWithAdditionalMocks() throws Exception {
		final int numberOfTimes = 2;
		final String expected = "used";

		ExpectNewDemo tested = new ExpectNewDemo();
		ExpectNewServiceUser expectNewServiceImplMock = EasyMock.createMock(ExpectNewServiceUser.class);
		Service serviceMock = createMock(Service.class);

		expectNew(ExpectNewServiceUser.class, serviceMock, numberOfTimes).andReturn(expectNewServiceImplMock);
		expect(expectNewServiceImplMock.useService()).andReturn(expected);

		replayAll(expectNewServiceImplMock);

		assertEquals(expected, tested.newWithArguments(serviceMock, numberOfTimes));

		verifyAll();
	}

}