Leaf Petersen
b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
54 lines
1.8 KiB
Dart
54 lines
1.8 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.9
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import "package:expect/expect.dart";
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// Exercises compile-time string constants
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const yz = "y" + "z";
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main() {
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// Constant comparisons are independent of the quotes used.
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Expect.isTrue(identical("abcd", 'abcd'));
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Expect.isTrue(identical('abcd', "abcd"));
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Expect.isTrue(identical("ab\"cd", 'ab"cd'));
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Expect.isTrue(identical('ab\'cd', "ab'cd"));
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// String concatenation works even when quotes are different.
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Expect.isTrue(identical("abcd", "ab" "cd"));
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Expect.isTrue(identical("abcd", "ab" 'cd'));
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Expect.isTrue(identical("abcd", 'ab' 'cd'));
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Expect.isTrue(identical("abcd", 'ab' "cd"));
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// Or when there are more than 2 contatenations.
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Expect.isTrue(identical("abcd", "a" "b" "cd"));
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Expect.isTrue(identical("abcd", "a" "b" "c" "d"));
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Expect.isTrue(identical('abcd', 'a' 'b' 'c' 'd'));
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Expect.isTrue(identical("abcd", "a" "b" 'c' "d"));
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Expect.isTrue(identical("abcd", 'a' 'b' 'c' 'd'));
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Expect.isTrue(identical("abcd", 'a' "b" 'c' "d"));
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Expect.isTrue(identical("a'b'cd", "a" "'b'" 'c' "d"));
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Expect.isTrue(identical("a\"b\"cd", "a" '"b"' 'c' "d"));
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Expect.isTrue(identical("a\"b\"cd", "a" '"b"' 'c' "d"));
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Expect.isTrue(identical("a'b'cd", 'a' "'b'" 'c' "d"));
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Expect.isTrue(identical('a\'b\'cd', "a" "'b'" 'c' "d"));
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Expect.isTrue(identical('a"b"cd', 'a' '"b"' 'c' "d"));
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Expect.isTrue(identical("a\"b\"cd", 'a' '"b"' 'c' "d"));
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const a = identical("ab", "a" + "b");
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Expect.isTrue(a);
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const b = identical("xyz", "x" + yz);
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Expect.isTrue(b);
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const c = identical("12", "1" "2");
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Expect.isTrue(c);
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const d = identical("zyz", "z$yz");
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Expect.isTrue(d);
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}
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