Utils/tests/Expect/throws_A02_t01.dart

// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.9

/// @assertion static void throws(void f(), [_CheckExceptionFn check = null, String reason = null])
/// Descriptive error message is provided in case of failure.
/// @description Checks that message of thrown ExpectException includes 
///              the specified reason argument if any, both when the tested method
///              doesn't throw any exceptions and when the check function returns false.
/// @author varlax
/// @reviewer rodionov

import "../../../Utils/expect.dart";

typedef bool checkFn(exception);
typedef void test();

main() {
  check(() {return;}, null, "sdsds sd dsf1");
  check(() {return;}, (e) => true, "sdsds sd dsf2");
  check(() {return;}, (e) => false, "sdsds sd dsf3");

  check(() {throw "";}, (e) => false, "sdsds sd dsf4");
}


void check(test tFun, [checkFn checkFun = null, String reason = null]) {
  try {
    Expect.throws(tFun, checkFun, reason);
    Expect.fail("ExpectException expected");
  } on ExpectException catch(e) {
    if (!e.message.contains(reason, 0)) throw "reason ($reason) not mentioned in ExpectException message (${e.message})";
  }
}