Expect
This is a statement that provides an assertion capability for checking for thrown exceptions.
Its usually used in unit test code
Grammar
expect <exceptionType> <statements>
Examples
expect FormatException i = Int.parse('abcdefg') expect AssertException assert 0 > 1 ints = [1,2,3] expect ArgumentOutOfRangeException, print ints[5] expect MyInvalidInputException checkInput(GenericInvalidInputObject)