blob: ad99195e2f7af5d775be3504053ace14a7da4f4b [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 'dart:async';
import 'package:async_helper/async_helper.dart';
import 'package:expect/expect.dart';
import 'compiler_helper.dart';
// Tests for
const String TEST_1 = r"""
foo() {
int a = 120;
String b = 'hello';
return 'u${a}v${b}w';
}
""";
const String TEST_2 = r"""
foo(a, b) {
return 'aaaaa${a}xxxxx'
"yyyyy${b}zzzzz";
}
""";
const String TEST_3 = r"""
foo(a) {
var b = '$a#';
return '${b}x${b}';
}
""";
const String TEST_4 = r"""
foo(a) {
var b = [];
if (a) b.add(123);
return '${b.length}';
}
""";
main() {
Future check(String test, String contained) {
return compile(test, entry: 'foo').then((String generated) {
Expect.isTrue(generated.contains(contained), contained);
});
}
asyncTest(() => Future.wait([
// Full substitution.
check(TEST_1, r'"u120vhellow"'),
// Adjacent string fragments get merged.
check(TEST_2, r'"xxxxxyyyyy"'),
// 1. No merging of fragments that are multi-use. Prevents exponential code
// and keeps author's manual CSE.
// 2. Know string values require no stringification.
check(TEST_3, r'return b + "x" + b'),
// Known int value can be formatted directly.
check(TEST_4, r'return "" + b.length'),
]));
}