How to verify that a specific method was not called using Mockito?

Question

How to verify that a method is not called on an object's dependency?

For example:

public interface Dependency {

    void someMethod();

}

public class Foo {

    public bar(final Dependency d) {

        ...

    }

}

With the Foo test:

public class FooTest {

    @Test

    public void dependencyIsNotCalled() {

        final Foo foo = new Foo(...);

        final Dependency dependency = mock(Dependency.class);

        foo.bar(dependency);

        **// verify here that someMethod was not called??**

    }

}

Answer 1

The best way to verify that a specific method was not called using Mockito is to use the following syntax:

import static org.mockito.Mockito.never;

import static org.mockito.Mockito.verify;

// ...

verify(dependency, never()).someMethod();

For documentation of the feature used in the above syntax click here and for never click here.

Answer 2

To say that a certain method was not called in a test using Mockito, you would use verify with times(0). 
 
Example Code 
 
import static org.mockito.Mockito.*; 
import org.junit.jupiter.api.Test; 
 
public class MyServiceTest { 
 
@Test 
public void testMethodNotCalled() { 
MyService myService = mock(MyService.class); 
 
// Perform actions that should NOT call myService.someMethod() 
// Verify that someMethod() was not called 
verify(myService, times(0)).someMethod(); 
} 
} 
Explanation 
verify(myService, times(0)).someMethod(); checks that someMethod was never called on myService. 
If someMethod was called, this verification will fail the test, making sure the method has actually not been invoked.