Method when

mockito-core/src/main/java/org/mockito/stubbing/Stubber.java:76–76

Allows to choose a method when stubbing in doThrow()|doAnswer()|doNothing()|doReturn() style Example: doThrow(new RuntimeException()) .when(mockedList).clear(); //following throws RuntimeException: mockedList.clear(); Read more about

(T mock)

     * @return select method for stubbing
     */
    <T> T when(T mock);
}