Utils/tests/Expect/isTrue_A01_t02.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.

/// @assertion static void isTrue(var actual, [String reason = null])
/// Checks whether the actual value is a bool and its value is true.
/// @description Checks that using non-boolean argument or boolean false results
/// in ExpectException being thrown. Arguments being tested include null,
/// numeric and Object, along with null, empty and non-empty reason arguments.
/// @author rodionov

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

main() {
  check(0);
  check(0, "");
  check(0, "not empty");

  check(null);
  check(null, "");
  check(null, "not empty");

  check(false);
  check(false, "");
  check(false, "not empty");

  check(new Object());
  check(new Object(), "");
  check(new Object(), "not empty");
}

void check(var arg, [String? reason = null]) {
  try {
    Expect.isTrue(arg, reason);
    throw new Exception("ExpectException expected");
  } on ExpectException catch(e) {
  }
}