| // 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"; |
| |
| void main() { |
| Expect.equals("", new String.fromCharCodes(new List(0))); |
| Expect.equals("", new String.fromCharCodes([])); |
| Expect.equals("", new String.fromCharCodes(const [])); |
| Expect.equals("AB", new String.fromCharCodes([65, 66])); |
| Expect.equals("AB", new String.fromCharCodes(const [65, 66])); |
| Expect.equals("Ærø", new String.fromCharCodes(const [0xc6, 0x72, 0xf8])); |
| Expect.equals("\u{1234}", new String.fromCharCodes([0x1234])); |
| Expect.equals("\u{12345}*", new String.fromCharCodes([0x12345, 42])); |
| Expect.equals("", new String.fromCharCodes(new List())); |
| { |
| var a = new List(); |
| a.add(65); |
| a.add(66); |
| Expect.equals("AB", new String.fromCharCodes(a)); |
| } |
| |
| // Long list (bug 6919). |
| for (int len in [499, 500, 501, 999, 100000]) { |
| List<int> list = new List(len); |
| for (int i = 0; i < len; i++) { |
| list[i] = 65 + (i % 26); |
| } |
| for (int i = len - 9; i < len; i++) { |
| list[i] = 48 + (len - i); |
| } |
| // We should not throw a stack overflow here. |
| String long = new String.fromCharCodes(list); |
| // Minimal sanity checking on the string. |
| Expect.isTrue(long.startsWith('ABCDE')); |
| Expect.isTrue(long.endsWith('987654321')); |
| int middle = len ~/ 2; |
| middle -= middle % 26; |
| Expect.equals('XYZABC', long.substring(middle - 3, middle + 3)); |
| Expect.equals(len, long.length); |
| } |
| |
| |
| // Should work with iterables and non-default-lists (http://dartbug.com/8922) |
| Expect.equals("CBA", new String.fromCharCodes([65, 66, 67].reversed)); |
| Expect.equals("BCD", |
| new String.fromCharCodes([65, 66, 67].map((x) => x + 1))); |
| Expect.equals("AC", |
| new String.fromCharCodes([0x41, 0x42, 0x43].where( |
| (x) => x.isOdd))); |
| Expect.equals("CE", |
| new String.fromCharCodes( |
| [0x41, 0x42, 0x43].where((x) => x.isOdd) |
| .map((x) => x + 2))); |
| Expect.equals("ABC", new String.fromCharCodes( |
| new Iterable.generate(3, (x) => 65 + x))); |
| Expect.equals("ABC", new String.fromCharCodes("ABC".codeUnits)); |
| Expect.equals("BCD", |
| new String.fromCharCodes("ABC".codeUnits.map((x) => x + 1))); |
| Expect.equals("BCD", |
| new String.fromCharCodes("ABC".runes.map((x) => x + 1))); |
| |
| var nonBmpCharCodes = [0, 0xD812, 0xDC34, 0x14834, 0xDC34, 0xD812]; |
| var nonBmp = new String.fromCharCodes(nonBmpCharCodes); |
| Expect.equals(7, nonBmp.length); |
| Expect.equals(0, nonBmp.codeUnitAt(0)); |
| Expect.equals(0xD812, nonBmp.codeUnitAt(1)); // Separated surrogate pair |
| Expect.equals(0xDC34, nonBmp.codeUnitAt(2)); |
| Expect.equals(0xD812, nonBmp.codeUnitAt(3)); // Single non-BMP code point. |
| Expect.equals(0xDC34, nonBmp.codeUnitAt(4)); |
| Expect.equals(0xDC34, nonBmp.codeUnitAt(5)); // Unmatched surrogate. |
| Expect.equals(0xD812, nonBmp.codeUnitAt(6)); // Unmatched surrogate. |
| |
| var reversedNonBmp = new String.fromCharCodes(nonBmpCharCodes.reversed); |
| Expect.equals(7, reversedNonBmp.length); |
| Expect.equals(0, reversedNonBmp.codeUnitAt(6)); |
| Expect.equals(0xD812, reversedNonBmp.codeUnitAt(5)); |
| Expect.equals(0xDC34, reversedNonBmp.codeUnitAt(4)); |
| Expect.equals(0xDC34, reversedNonBmp.codeUnitAt(3)); |
| Expect.equals(0xD812, reversedNonBmp.codeUnitAt(2)); |
| Expect.equals(0xDC34, reversedNonBmp.codeUnitAt(1)); |
| Expect.equals(0xD812, reversedNonBmp.codeUnitAt(0)); |
| |
| Expect.equals(nonBmp, new String.fromCharCodes(nonBmp.codeUnits)); |
| Expect.equals(nonBmp, new String.fromCharCodes(nonBmp.runes)); |
| } |