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I'm trying to mock a class constructor with PowerMockito for first time, but it doesn't work. My current code is:
public class Bar {
public String getText() {
return "Fail";
}
}
public class Foo {
public String getValue(){
Bar bar= new Bar();
return bar.getText();
}
}
@RunWith(PowerMockRunner.class)
@PrepareForTest(Bar.class)
public class FooTest {
private Foo foo;
@Mock
private Bar mockBar;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
PowerMockito.whenNew(Bar.class).withNoArguments().thenReturn(mockBar);
foo= new Foo();
}
@Test
public void testGetValue() throws Exception {
when(mockBar.getText()).thenReturn("Success");
assertEquals("Success",foo.getValue());
}
}
The test fails because the returned value is "Fail". Where is my problem?
873
0, we can now mock Java constructors with Mockito. This allows us to return a mock from every object construction for testing purposes. Similar to mocking static method calls with Mockito, we can define the scope of when to return a mock from a Java constructor for a particular Java class.
if your constructor is calling a method of its own class, you can fake the call using this API: // Create a mock for class MyClass (Foo is the method called in the constructor) Mock mock = MockManager. Mock<MyClass>(Constructor. NotMocked); // Faking the call to Foo mock.
To use PowerMock with Mockito, we need to apply the following two annotations in the test: @RunWith(PowerMockRunner. class): It is the same as we have used in our previous examples. The only difference is that in the previous example we have used MockitoUnitRunner.
Of course you can – and probably will – use Mockito and PowerMock in the same JUnit test at some point of time.
Okey, found the answer, you need to call to
@PrepareForTest(Foo.class)
instead of
@PrepareForTest(Bar.class)
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