Index: test/codegen/corelib/string_codeunits_test.dart |
diff --git a/test/codegen/corelib/string_codeunits_test.dart b/test/codegen/corelib/string_codeunits_test.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..30b7f4052698be9ff6750698bfdbe5f42f21bc71 |
--- /dev/null |
+++ b/test/codegen/corelib/string_codeunits_test.dart |
@@ -0,0 +1,77 @@ |
+// 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. |
+ |
+import "package:expect/expect.dart"; |
+ |
+main() { |
+ test(String s) { |
+ List<int> units = s.codeUnits; |
+ List<int> expectedUnits = <int>[]; |
+ for (int i = 0; i < s.length; i++) { |
+ expectedUnits.add(s.codeUnitAt(i)); |
+ } |
+ |
+ Expect.equals(s.length, units.length); |
+ for (int i = 0; i < s.length; i++) { |
+ Expect.equals(s.codeUnitAt(i), units.elementAt(i)); |
+ } |
+ |
+ // for-in |
+ var res = []; |
+ for (int unit in units) { |
+ res.add(unit); |
+ } |
+ Expect.listEquals(expectedUnits, res); |
+ |
+ // .map |
+ Expect.listEquals(expectedUnits.map((x) => x.toRadixString(16)).toList(), |
+ units.map((x) => x.toRadixString(16)).toList()); |
+ |
+ if (s == "") { |
+ Expect.throws(() => units.first, (e) => e is StateError); |
+ Expect.throws(() => units.last, (e) => e is StateError); |
+ Expect.throws(() => units[0], (e) => e is RangeError); |
+ Expect.throws(() => units[0] = 499, (e) => e is UnsupportedError); |
+ Expect.listEquals([], units.sublist(0, 0)); |
+ Expect.equals(-1, units.indexOf(42)); |
+ Expect.equals(-1, units.lastIndexOf(499)); |
+ } else { |
+ Expect.equals(s.codeUnitAt(0), units.first); |
+ Expect.equals(s.codeUnitAt(s.length - 1), units.last); |
+ Expect.equals(s.codeUnitAt(0), units[0]); |
+ Expect.throws(() { units[0] = 499; }, (e) => e is UnsupportedError); |
+ List<int> sub = units.sublist(1); |
+ Expect.listEquals(s.substring(1, s.length).codeUnits, sub); |
+ Expect.equals(-1, units.indexOf(-1)); |
+ Expect.equals(0, units.indexOf(units[0])); |
+ Expect.equals(-1, units.lastIndexOf(-1)); |
+ Expect.equals(units.length - 1, units.lastIndexOf(units[units.length - 1])); |
+ } |
+ |
+ Iterable reversed = units.reversed; |
+ int i = units.length - 1; |
+ for (int codeUnit in reversed) { |
+ Expect.equals(units[i--], codeUnit); |
+ } |
+ } |
+ |
+ test(""); |
+ test("abc"); |
+ test("\x00\u0000\u{000000}"); |
+ test("\u{ffff}\u{10000}\u{10ffff}"); |
+ String string = new String.fromCharCodes( |
+ [0xdc00, 0xd800, 61, 0xd9ab, 0xd9ab, 0xddef, 0xddef, 62, 0xdc00, 0xd800]); |
+ test(string); |
+ string = "\x00\x7f\xff\u0100\ufeff\uffef\uffff" |
+ "\u{10000}\u{12345}\u{1d800}\u{1dc00}\u{1ffef}\u{1ffff}"; |
+ test(string); |
+ |
+ // Reading each unit of a surrogate pair works. |
+ var r = "\u{10000}".codeUnits; |
+ var it = r.iterator; |
+ Expect.isTrue(it.moveNext()); |
+ Expect.equals(0xD800, it.current); |
+ Expect.isTrue(it.moveNext()); |
+ Expect.equals(0xDC00, it.current); |
+} |