Language/Statements/Assert/execution_t09.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 Execution of an assert statement assert(e);
 * proceeds as follows:
 * The conditional expression e is evaluated to an object o. If the class of o
 * is a subtype of Function then let r be the result of invoking o with no
 * arguments. Otherwise, let r be o. It is a dynamic type error if o is not of
 * type bool or of type Function, or if r is not of type bool. If r is false,
 * we say that the assertion failed. If r is true, we say that the assertion
 * succeeded. If the assertion succeeded, execution of the assert statement is
 * complete. If the assertion failed, an AssertionError is thrown.
 * @description Checks that an AssertionError is thrown if the assertion fails.
 * @author vasya
 */
import '../../../Utils/expect.dart';

main() {
  if (assertStatementsEnabled) {
    Expect.throws(() {
      assert(false);
    }, (e) => e is AssertionError);
  }
}