Is there any way we can mock the static util method while testing in JUnit?
I know Powermock can mock static calls, but I don't want to use Powermock.
Are there any alternatives?
(I assume you can use Mockito though) Nothing dedicated comes to my mind but I tend to use the following strategy when it comes to situations like that:
1) In the class under test, replace the static direct call with a call to a package level method that wraps the static call itself:
public class ToBeTested{
public void myMethodToTest(){
...
String s = makeStaticWrappedCall();
...
}
String makeStaticWrappedCall(){
return Util.staticMethodCall();
}
}
2) Spy the class under test while testing and mock the wrapped package level method:
public class ToBeTestedTest{
@Spy
ToBeTested tbTestedSpy = new ToBeTested();
@Before
public void init(){
MockitoAnnotations.initMocks(this);
}
@Test
public void myMethodToTestTest() throws Exception{
// Arrange
doReturn("Expected String").when(tbTestedSpy).makeStaticWrappedCall();
// Act
tbTestedSpy.myMethodToTest();
}
}
Here is an article I wrote on spying that includes similar case, if you need more insight: sourceartists.com/mockito-spying