79 lines
3.4 KiB
Java
79 lines
3.4 KiB
Java
package com.baeldung.powermockito.introduction;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.mockito.Mockito;
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import org.powermock.core.classloader.annotations.PrepareForTest;
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import org.powermock.modules.junit4.PowerMockRunner;
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import static org.junit.Assert.assertEquals;
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import static org.mockito.Mockito.times;
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import static org.mockito.Mockito.verify;
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import static org.powermock.api.mockito.PowerMockito.*;
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@RunWith(PowerMockRunner.class)
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@PrepareForTest(fullyQualifiedNames = "com.baeldung.powermockito.introduction.*")
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public class PowerMockitoUnitTest {
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@Test
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public void givenFinalMethods_whenUsingPowerMockito_thenCorrect() throws Exception {
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CollaboratorWithFinalMethods mock = mock(CollaboratorWithFinalMethods.class);
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whenNew(CollaboratorWithFinalMethods.class).withNoArguments().thenReturn(mock);
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CollaboratorWithFinalMethods collaborator = new CollaboratorWithFinalMethods();
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verifyNew(CollaboratorWithFinalMethods.class).withNoArguments();
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when(collaborator.helloMethod()).thenReturn("Hello Baeldung!");
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String welcome = collaborator.helloMethod();
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verify(collaborator).helloMethod();
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assertEquals("Hello Baeldung!", welcome);
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}
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@Test(expected = RuntimeException.class)
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public void givenStaticMethods_whenUsingPowerMockito_thenCorrect() {
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mockStatic(CollaboratorWithStaticMethods.class);
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when(CollaboratorWithStaticMethods.firstMethod(Mockito.anyString())).thenReturn("Hello Baeldung!");
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when(CollaboratorWithStaticMethods.secondMethod()).thenReturn("Nothing special");
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doThrow(new RuntimeException()).when(CollaboratorWithStaticMethods.class);
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CollaboratorWithStaticMethods.thirdMethod();
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String firstWelcome = CollaboratorWithStaticMethods.firstMethod("Whoever");
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String secondWelcome = CollaboratorWithStaticMethods.firstMethod("Whatever");
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assertEquals("Hello Baeldung!", firstWelcome);
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assertEquals("Hello Baeldung!", secondWelcome);
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verifyStatic(CollaboratorWithStaticMethods.class, times(2));
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CollaboratorWithStaticMethods.firstMethod(Mockito.anyString());
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verifyStatic(CollaboratorWithStaticMethods.class, Mockito.never());
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CollaboratorWithStaticMethods.secondMethod();
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CollaboratorWithStaticMethods.thirdMethod();
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}
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@Test
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public void givenPartialMocking_whenUsingPowerMockito_thenCorrect() throws Exception {
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String returnValue;
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spy(CollaboratorForPartialMocking.class);
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when(CollaboratorForPartialMocking.staticMethod()).thenReturn("I am a static mock method.");
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returnValue = CollaboratorForPartialMocking.staticMethod();
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CollaboratorForPartialMocking.staticMethod();
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assertEquals("I am a static mock method.", returnValue);
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CollaboratorForPartialMocking collaborator = new CollaboratorForPartialMocking();
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CollaboratorForPartialMocking mock = spy(collaborator);
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when(mock.finalMethod()).thenReturn("I am a final mock method.");
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returnValue = mock.finalMethod();
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verify(mock).finalMethod();
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assertEquals("I am a final mock method.", returnValue);
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when(mock, "privateMethod").thenReturn("I am a private mock method.");
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returnValue = mock.privateMethodCaller();
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verifyPrivate(mock).invoke("privateMethod");
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assertEquals("I am a private mock method. Welcome to the Java world.", returnValue);
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}
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} |