#1120
[PowerMock] How-To
Mock private method
public class CodeWithPrivateMethod {
public void meaningfulPublicApi() {
if (doTheGamble("Whatever", 1 << 3)) {
throw new RuntimeException("boom");
}
}
private boolean doTheGamble(String whatever, int binary) {
Random random = new Random(System.nanoTime());
boolean gamble = random.nextBoolean();
return gamble;
}
}
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.anyString;
import static org.powermock.api.mockito.PowerMockito.when;
import static org.powermock.api.support.membermodification.MemberMatcher.method;
@RunWith(PowerMockRunner.class)
@PrepareForTest(CodeWithPrivateMethod.class)
public class CodeWithPrivateMethodTest {
@Test(expected = RuntimeException.class)
public void when_gambling_is_true_then_always_explode() throws Exception {
CodeWithPrivateMethod spy = PowerMockito.spy(new CodeWithPrivateMethod());
when(spy, method(CodeWithPrivateMethod.class, "doTheGamble", String.class, int.class))
.withArguments(anyString(), anyInt())
.thenReturn(true);
spy.meaningfulPublicApi();
}
}
[Weblogic] Install tips Gogs – Installer un serveur Git avec interface web en moins de 10 secondes «
https://www.jayway.com/2012/02/25/mockito-and-dependency-injection/
Mock bean without 0-arg constructor (using PowerMock)
import static org.mockito.Mockito.mock; @RunWith(PowerMockRunner.class) @PrepareForTest(ClassWithout0ArgConstructor.class) class Test { ClassWithout0ArgConstructor mock = mock(ClassWithout0ArgConstructor.class); // Do something with mock // ... }Mock Void method
import static org.mockito.Mockito.mock; @RunWith(PowerMockRunner.class) @PrepareForTest(Class2Mock.class) class Test { Class2Mockmock mock = mock(Class2Mock.class); @Before public void before() { // Without arguments doAnswer((Answer<Void>) invocation -> { // Do something return null; }).when(mock).aVoidMethodWithoutArguments(); // With arguments doAnswer((Answer<Void>) invocation -> { // Do something System.out.println("called with args: " + invocation.getArguments()); return null; }).when(mock).aVoidMethodWithArguments(any(String.class)); } }MVN dependencies with Mockito
<dependency> <groupId>org.powermock</groupId> <artifactId>powermock-api-mockito2</artifactId> <version>1.7.3</version> <scope>test</scope> </dependency> <dependency> <groupId>org.powermock</groupId> <artifactId>powermock-module-junit4</artifactId> <version>1.7.3</version> <scope>test</scope> </dependency>