dart-sdk/tests/language/rewrite_if_empty_then_test.dart

// Copyright (c) 2014, 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";

var global = 0;

effect() {
    global = 1;
}
baz(b) { return b; }

foo(b) {
    if (b) {
        // do nothing
    } else {
        effect();
    }
    return baz(b);
}

foo2(b) {
    if (b) {
        // do nothing (but implicit return may get inlined up here)
    } else {
        effect();
    }
}

main() {
    global = 0;
    Expect.equals(true, foo(true));
    Expect.equals(0, global);

    global = 0;
    Expect.equals(false, foo(false));
    Expect.equals(1, global);

    global = 0;
    foo2(true);
    Expect.equals(0, global);

    global = 0;
    foo2(false);
    Expect.equals(1, global);
}