I'm writing an integration test in Java using JUnit, Mockito, and ReflectionTestUtils. I have the following situation:
Source code that I want to test:
class AClassINeed extends SomeClass{
public method_I_need_to_call(){
//some code
method_that_fails();
// lots of other calls
}
private boolean method_that_fails(){
// Instantiate a new local object of external dependency
// Call a method from this new object ==> AKA FAILURE
}
}
Inside my test method: I need to create a realObject here so that all the real code gets exercises. Except for the method that will fail. I'm currently trying like this:
AClassINeed realObject = new AClassINeed(Lots.class, Of.class, Parameters.class);
AClassINeed spyObject = Mockito.spy(realObject);
Method spyObjectPrivateMethod = spyObject.getClass().getDeclaredMethod("method_that_fails");
spyObjectPrivateMethod.setAccessible(true);
when(spyObjectPrivateMethod).thenReturn(true); // <== Syntax error "Cannot resolve method thenReturn(boolean)"
How can I achieve this? I cannot create a mock object of AClassINeed because I want execute all methods normally except the one that fails.
I also tried with ReflectionTestUtils like this:
Method failingMethod = realObject.getClass().getDeclaredMethod("method_that_fails", String.class, String.class);
failingMethod.setAccessible(true);
ReflectionTestUtils.setField(realObject, "method_that_fails", failingMethod); // <== Wrong! This cannot be done for methods
At this point, I'm stumped.
Is there a way for me to get that failing method to do nothing without mocking out the entire class?
