blob: 420488512b152060a98bcf3dcd05cff15592379b [file] [log] [blame]
// Copyright (c) 2013, 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.
import "package:expect/expect.dart";
class A {
var _x, _y;
A(x, [y = 10])
: _x = x++,
_y = y++ {
// Check that value of modified constructor parameters
// is remembered in the constructor body.
Expect.equals(x, _x + 1);
Expect.equals(y, _y + 1);
}
}
class B extends A {
var _a, _b;
// The super call in the middle of the initializer list conceptually
// forces two super call chains, one for initializer list and a second
// one for the constructor bodies.
B(a, b)
: _a = a++,
_b = b++,
super(a + b++) {
Expect.equals(a, _a + 1);
Expect.equals(b, _b + 2);
Expect.equals(a + (b - 2), _x - 1);
}
}
main() {
dynamic o = new B(3, 5);
Expect.equals(3, o._a);
Expect.equals(5, o._b);
Expect.equals(10, o._x);
Expect.equals(10, o._y);
o = new A(3);
Expect.equals(3, o._x);
Expect.equals(10, o._y);
}