/*
* 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.powermockito.junit4.rule.xstream;
import org.junit.Rule;
import org.junit.Test;
import org.mockito.exceptions.base.MockitoAssertionError;
import org.mockito.exceptions.verification.TooLittleActualInvocations;
import org.mockito.exceptions.verification.junit.ArgumentsAreDifferent;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.rule.PowerMockRule;
import samples.singleton.StaticHelper;
import samples.singleton.StaticService;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.when;
import static org.powermock.api.mockito.PowerMockito.doThrow;
import static org.powermock.api.mockito.PowerMockito.mockStatic;
import static org.powermock.api.mockito.PowerMockito.spy;
import static org.powermock.api.mockito.PowerMockito.verifyStatic;
/**
* Test class to demonstrate static mocking with PowerMockito.
*/
@PrepareForTest( { StaticService.class, StaticHelper.class })
public class MockStaticTest {
@Rule
public PowerMockRule rule = new PowerMockRule();
@Test
public void testMockStaticNoExpectations() throws Exception {
mockStatic(StaticService.class);
assertNull(StaticService.say("hello"));
// Verification is done in two steps using static methods.
verifyStatic();
StaticService.say("hello");
}
@Test
public void testMockStaticWithExpectations() throws Exception {
final String expected = "Hello world";
final String argument = "hello";
mockStatic(StaticService.class);
when(StaticService.say(argument)).thenReturn(expected);
assertEquals(expected, StaticService.say(argument));
// Verification is done in two steps using static methods.
verifyStatic();
StaticService.say(argument);
}
@Test
public void errorousVerificationOfStaticMethodsGivesANonMockitoStandardMessage() throws Exception {
final String expected = "Hello world";
final String argument = "hello";
mockStatic(StaticService.class);
when(StaticService.say(argument)).thenReturn(expected);
assertEquals(expected, StaticService.say(argument));
// Verification is done in two steps using static methods.
verifyStatic(times(2));
try {
StaticService.say(argument);
fail("Should throw assertion error");
} catch (MockitoAssertionError e) {
assertEquals("\nsamples.singleton.StaticService.say(\"hello\");\nWanted 2 times but was 1 time.", e.getMessage());
}
}
@Test(expected = IllegalStateException.class)
public void testMockStaticThatThrowsException() throws Exception {
final String argument = "hello";
mockStatic(StaticService.class);
when(StaticService.say(argument)).thenThrow(new IllegalStateException());
StaticService.say(argument);
}
@Test(expected = ArgumentsAreDifferent.class)
public void testMockStaticVerificationFails() throws Exception {
mockStatic(StaticService.class);
assertNull(StaticService.say("hello"));
// Verification is done in two steps using static methods.
verifyStatic();
StaticService.say("Hello");
}
@Test
public void testMockStaticAtLeastOnce() throws Exception {
mockStatic(StaticService.class);
assertNull(StaticService.say("hello"));
assertNull(StaticService.say("hello"));
// Verification is done in two steps using static methods.
verifyStatic(atLeastOnce());
StaticService.say("hello");
}
@Test
public void testMockStaticCorrectTimes() throws Exception {
mockStatic(StaticService.class);
assertNull(StaticService.say("hello"));
assertNull(StaticService.say("hello"));
// Verification is done in two steps using static methods.
verifyStatic(times(2));
StaticService.say("hello");
}
@Test(expected = TooLittleActualInvocations.class)
public void testMockStaticIncorrectTimes() throws Exception {
mockStatic(StaticService.class);
assertNull(StaticService.say("hello"));
assertNull(StaticService.say("hello"));
// Verification is done in two steps using static methods.
verifyStatic(times(3));
StaticService.say("hello");
}
@Test
public void testMockStaticVoidWithNoExpectations() throws Exception {
mockStatic(StaticService.class);
StaticService.sayHello();
verifyStatic();
StaticService.sayHello();
}
@Test(expected = ArrayStoreException.class)
public void testMockStaticVoidWhenThrowingException() throws Exception {
mockStatic(StaticService.class);
// Expectations
doThrow(new ArrayStoreException("Mock error")).when(StaticService.class);
StaticService.sayHello();
// Test
StaticService.sayHello();
}
@Test
public void testSpyOnStaticMethods() throws Exception {
spy(StaticService.class);
String expectedMockValue = "expected";
when(StaticService.say("world")).thenReturn(expectedMockValue);
assertEquals(expectedMockValue, StaticService.say("world"));
assertEquals("Hello world2", StaticService.say("world2"));
}
}