[Kotlin] thenThrow(Throwable) should be able to stub the method with any checked exceptions

Hi,

Kotlin does not have checked exceptions. https://kotlinlang.org/docs/reference/exceptions.html#checked-exceptions

However, ThrowsException#validateFor(InvocationOnMock) does not allow the checked exception that does not match the method signature. Therefore, the following test fails.

class MyTest {

    @Test(expected = MyException::class)
    fun test() {
        val mock = Mockito.mock(I::class.java)
        Mockito.`when`(mock.doIt()).thenThrow(MyException()) // This line throws a MockitoException
        mock.doIt()
    }

    interface I {
        fun doIt(): String
    }

    class MyException : Exception()

}

I’m going to file the PR to fix this.

[jibidus]

Here is a workaround :

doAnswer { throw MyException() }
            .`when`(mock)
            .doIt()

[drawers]

`when`(mock.doIt()).thenAnswer { throw MyException() }

also works if you don’t like Yoda mocks