Language/13_Statements/11_Try_A07_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 A try statement try s1 on − catch1 . . . on − catchn finally sf defines an
 * exception handler h that executes as follows:
 *   The on-catch clauses are examined in order, starting with catch1 , until
 * either an on-catch clause that matches the current exception is found,
 * or the list of on-catch clauses has been exhausted. If an on-catch clause
 * on−catchk is found, then pk1 is bound to the current exception, pk2 , if declared,
 * is bound to the active stack trace, and then catchk is executed. If no on-catch
 * clause is found, the finally clause is executed. Then, execution resumes at the
 * end of the try statement.
 *     A finally clause finally s defines an exception handler h that executes by
 * executing the finally clause. Then, execution resumes at the end of the try
 * statement.
 * @description Checks that the finally clause is executed regardless of whether or not
 * a matching catch clause was found and whether or not there were any to begin with.
 * Implicitly checks that execution resumes at the end of the try statement or is
 * transferred to the nearest dynamically enclosing exception handler depending on whether
 * or not the current exception was made undefined by an executed catch clause.
 * @author rodionov
 * @reviewer iefremov
 */
import "../../Utils/expect.dart";


void main() {
  bool isFinallyExecuted = false;
  var ex = "fail";
  try {
    try {
      throw ex;
    } on int catch(i) {
    } on bool catch(b) {
    } finally {
      isFinallyExecuted = true;
    }
    Expect.fail("This code shouldn't be executed");
  } on String catch(s) {
    Expect.equals(ex, s);
  }
  Expect.equals(true, isFinallyExecuted);
  
  isFinallyExecuted = false;
  try {
    throw ex;
  } on int catch(i) {
  } on String catch(s) {
  } on bool catch(b) {
  } finally {
    isFinallyExecuted = true;
  }
  Expect.equals(true, isFinallyExecuted);
  
  isFinallyExecuted = false;
  try {
    try {
      throw ex;
    } finally {
      isFinallyExecuted = true;
    }
    Expect.fail("This code shouldn't be executed");
  } on String catch(s) {
    Expect.equals(ex, s);
  }
  Expect.equals(true, isFinallyExecuted);
}