blob: 212f8248e45444caa28be55685db61436d83ea27 [file] [log] [blame]
// 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.empty()));
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]));
{
var a = <int>[];
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.filled(len, -1);
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));
}