| // 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. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| // Exercises compile-time string constants |
| |
| const yz = "y" + "z"; |
| |
| main() { |
| // Constant comparisons are independent of the quotes used. |
| Expect.isTrue(identical("abcd", 'abcd')); |
| Expect.isTrue(identical('abcd', "abcd")); |
| Expect.isTrue(identical("ab\"cd", 'ab"cd')); |
| Expect.isTrue(identical('ab\'cd', "ab'cd")); |
| |
| // String concatenation works even when quotes are different. |
| Expect.isTrue(identical("abcd", "ab" "cd")); |
| Expect.isTrue(identical("abcd", "ab" 'cd')); |
| Expect.isTrue(identical("abcd", 'ab' 'cd')); |
| Expect.isTrue(identical("abcd", 'ab' "cd")); |
| |
| // Or when there are more than 2 contatenations. |
| Expect.isTrue(identical("abcd", "a" "b" "cd")); |
| Expect.isTrue(identical("abcd", "a" "b" "c" "d")); |
| Expect.isTrue(identical('abcd', 'a' 'b' 'c' 'd')); |
| Expect.isTrue(identical("abcd", "a" "b" 'c' "d")); |
| Expect.isTrue(identical("abcd", 'a' 'b' 'c' 'd')); |
| Expect.isTrue(identical("abcd", 'a' "b" 'c' "d")); |
| |
| Expect.isTrue(identical("a'b'cd", "a" "'b'" 'c' "d")); |
| Expect.isTrue(identical("a\"b\"cd", "a" '"b"' 'c' "d")); |
| Expect.isTrue(identical("a\"b\"cd", "a" '"b"' 'c' "d")); |
| Expect.isTrue(identical("a'b'cd", 'a' "'b'" 'c' "d")); |
| Expect.isTrue(identical('a\'b\'cd', "a" "'b'" 'c' "d")); |
| Expect.isTrue(identical('a"b"cd', 'a' '"b"' 'c' "d")); |
| Expect.isTrue(identical("a\"b\"cd", 'a' '"b"' 'c' "d")); |
| |
| const a = identical("ab", "a" + "b"); |
| Expect.isTrue(a); |
| |
| const b = identical("xyz", "x" + yz); |
| Expect.isTrue(b); |
| |
| const c = identical("12", "1" "2"); |
| Expect.isTrue(c); |
| |
| const d = identical("zyz", "z$yz"); |
| Expect.isTrue(d); |
| } |