Test expected exceptions in Kotlin

Question

In Java, the programmer can specify expected exceptions for JUnit test cases like this:

@Test(expected = ArithmeticException.class)
public void omg()
{
    int bl         


        

Answer 1

Firt steps is to add (expected = YourException::class) in test annotation

@Test(expected = YourException::class)

Second step is to add this function

private fun throwException(): Boolean = throw YourException()

Finally you will have something like this:

@Test(expected = ArithmeticException::class)
fun `get query error from assets`() {
    //Given
    val error = "ArithmeticException"

    //When
    throwException()
    val result =  omg()

    //Then
    Assert.assertEquals(result, error)
}
private fun throwException(): Boolean = throw ArithmeticException()