expectException<T extends Object> method

StepInput expectException<T extends Object>([ String? expectedMessage ])

Flags this step to expect a runtime exception of type T during invocation.

Optionally validates that the resulting error message explicitly matches expectedMessage.

Implementation

StepInput expectException<T extends Object>([String? expectedMessage]) {
  return StepInput(
    description: description,
    callback: callback,
    params: params,
    exceptionType: T,
    exceptionMessage: expectedMessage,
  );
}