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// Copyright (c) 2012, 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";
import "dart:typed_data";
main() {
iter(count, [values]) => values is List
? new Iterable<int>.generate(count, (x) => values[x])
: new Iterable<int>.generate(count, (x) => values);
test(expect, iter, [start = 0, end]) {
var actual = new String.fromCharCodes(iter, start, end);
Expect.equals(expect, actual);
}
testThrows(iterable, [start = 0, end]) {
Expect.throws(() {
new String.fromCharCodes(iterable, start, end);
});
}
test("", iter(0));
test("", <int>[]);
test("", const <int>[]);
test("", new List<int>(0));
test("", new Uint8List(0));
test("", new Uint16List(0));
test("", new Uint32List(0));
test("", "".codeUnits);
test("\x00", iter(1, 0));
test("\x00", [0]);
test("\x00", const [0]);
test("\x00", new List<int>(1)..[0] = 0);
test("\x00", new Uint8List(1));
test("\x00", new Uint16List(1));
test("\x00", new Uint32List(1));
test("\x00", "\x00".codeUnits);
test("\xff", iter(1, 255));
test("\xFF", [255]);
test("\xFF", const [255]);
test("\xFF", new List<int>(1)..[0] = 255);
test("\xFF", new Uint8List(1)..[0] = 255);
test("\xFF", new Uint16List(1)..[0] = 255);
test("\xFF", new Uint32List(1)..[0] = 255);
test("\xFF", "\xFF".codeUnits);
test("\u0100", iter(1, 256));
test("\u0100", [256]);
test("\u0100", const [256]);
test("\u0100", new List<int>(1)..[0] = 256);
test("\u0100", new Uint16List(1)..[0] = 256);
test("\u0100", new Uint32List(1)..[0] = 256);
test("\u0100", "\u0100".codeUnits);
test("\uffff", iter(1, 65535));
test("\uffff", [65535]);
test("\uffff", const [65535]);
test("\uffff", new List<int>(1)..[0] = 65535);
test("\uffff", new Uint16List(1)..[0] = 65535);
test("\uffff", new Uint32List(1)..[0] = 65535);
test("\uffff", "\uffff".codeUnits);
test("\u{10000}", iter(1, 65536));
test("\u{10000}", [65536]);
test("\u{10000}", const [65536]);
test("\u{10000}", new List<int>(1)..[0] = 65536);
test("\u{10000}", new Uint32List(1)..[0] = 65536);
test("\u{10000}", "\u{10000}".codeUnits);
test("\u{10FFFF}", iter(1, 0x10FFFF));
test("\u{10FFFF}", [0x10FFFF]);
test("\u{10FFFF}", const [0x10FFFF]);
test("\u{10FFFF}", new List<int>(1)..[0] = 0x10FFFF);
test("\u{10FFFF}", new Uint32List(1)..[0] = 0x10FFFF);
test("\u{10ffff}", iter(2, [0xDBFF, 0xDFFF]));
test("\u{10ffff}", [0xDBFF, 0xDFFF]);
test("\u{10ffff}", const [0xDBFF, 0xDFFF]);
test(
"\u{10ffff}",
new List<int>(2)
..[0] = 0xDBFF
..[1] = 0xDFFF);
test(
"\u{10ffff}",
new Uint16List(2)
..[0] = 0xDBFF
..[1] = 0xDFFF);
test(
"\u{10ffff}",
new Uint32List(2)
..[0] = 0xDBFF
..[1] = 0xDFFF);
test("\u{10FFFF}", "\u{10FFFF}".codeUnits);
var leadSurrogate = "\u{10ffff}"[0];
test(leadSurrogate, iter(1, 0xDBFF));
test(leadSurrogate, [0xDBFF]);
test(leadSurrogate, const [0xDBFF]);
test(leadSurrogate, new List<int>(1)..[0] = 0xDBFF);
test(leadSurrogate, new Uint16List(1)..[0] = 0xDBFF);
test(leadSurrogate, new Uint32List(1)..[0] = 0xDBFF);
test(leadSurrogate, leadSurrogate.codeUnits);
var tailSurrogate = "\u{10ffff}"[1];
test(tailSurrogate, iter(1, 0xDFFF));
test(tailSurrogate, [0xDFFF]);
test(tailSurrogate, const [0xDFFF]);
test(tailSurrogate, new List<int>(1)..[0] = 0xDFFF);
test(tailSurrogate, new Uint16List(1)..[0] = 0xDFFF);
test(tailSurrogate, new Uint32List(1)..[0] = 0xDFFF);
test(tailSurrogate, tailSurrogate.codeUnits);
testThrows(null);
testThrows("not an iterable");
testThrows(42);
testThrows([-1]);
testThrows(new List<int>(1)..[0] = -1);
testThrows(const [-1]);
testThrows(new Int8List(1)..[0] = -1);
testThrows(new Int16List(1)..[0] = -1);
testThrows(new Int32List(1)..[0] = -1);
testThrows([0x110000]);
testThrows(new List<int>(1)..[0] = 0x110000);
testThrows(const [0x110000]);
testThrows(new Int32List(1)..[0] = 0x110000);
// Check start/end
var list = const [0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48];
for (var iterable in [
iter(list.length, list),
list.toList(growable: true),
list.toList(growable: false),
list,
new Uint8List(8)..setRange(0, 8, list),
new Uint16List(8)..setRange(0, 8, list),
new Uint32List(8)..setRange(0, 8, list),
"ABCDEFGH".codeUnits,
]) {
test("ABCDEFGH", iterable);
// start varies, end is null.
test("ABCDEFGH", iterable, 0);
test("BCDEFGH", iterable, 1);
test("H", iterable, 7);
test("", iterable, 8);
// start = 0, end varies.
test("ABCDEFGH", iterable, 0);
test("A", iterable, 0, 1);
test("AB", iterable, 0, 2);
test("ABCDEFG", iterable, 0, 7);
test("ABCDEFGH", iterable, 0, 8);
test("", iterable, 0, 0);
// Both varying.
test("ABCDEFGH", iterable, 0, 8);
test("AB", iterable, 0, 2);
test("GH", iterable, 6, 8);
test("DE", iterable, 3, 5);
test("", iterable, 3, 3);
}
// Can split surrogates in input, but not a single big code point.
test(leadSurrogate, [0xDBFF, 0xDFFF], 0, 1);
test(tailSurrogate, [0xDBFF, 0xDFFF], 1);
test("\u{10FFFF}", [0x10FFFF], 0, 1);
void testThrowsRange(iterable, [start = 0, end]) {
Expect.throwsRangeError(
() => new String.fromCharCodes(iterable, start, end));
}
// Test varying slices of the code units of a string.
testSubstring(string) {
var codes = string.codeUnits;
int length = string.length;
for (var iterable in [
iter(length, codes),
codes.toList(growable: true),
codes.toList(growable: false),
new Uint16List(length)..setRange(0, length, codes),
new Int32List(length)..setRange(0, length, codes),
new Uint32List(length)..setRange(0, length, codes),
codes,
]) {
var newString = new String.fromCharCodes(iterable);
Expect.equals(string, newString);
for (int i = 0; i < length; i = i * 2 + 1) {
test(string.substring(i), iterable, i);
test(string.substring(0, i), iterable, 0, i);
for (int j = 0; i + j < length; j = j * 2 + 1) {
test(string.substring(i, i + j), iterable, i, i + j);
}
}
testThrowsRange(iterable, -1);
testThrowsRange(iterable, 0, -1);
testThrowsRange(iterable, 2, 1);
testThrowsRange(iterable, 0, length + 1);
testThrowsRange(iterable, length + 1);
testThrowsRange(iterable, length + 1, length + 2);
}
}
testSubstring("");
testSubstring("ABCDEFGH");
// length > 128
testSubstring("ABCDEFGH" * 33);
testSubstring("\x00" * 357);
// length > 128 and non-ASCII.
testSubstring("\uFFFD\uFFFE\u{10000}\u{10ffff}c\x00" * 37);
// Large List.
var megaList = ("abcde" * 200000).codeUnits.toList();
test("abcde" * 199998, megaList, 5, 999995);
// Large Uint8List.
test("abcde" * 199998, new Uint8List.fromList(megaList), 5, 999995);
const cLatin1 = const [0x00, 0xff];
const cUtf16 = const [0x00, 0xffff, 0xdfff, 0xdbff, 0xdfff, 0xdbff];
const cCodepoints = const [0x00, 0xffff, 0xdfff, 0x10ffff, 0xdbff];
List gLatin1 = cLatin1.toList(growable: true);
List gUtf16 = cUtf16.toList(growable: true);
List gCodepoints = cCodepoints.toList(growable: true);
List fLatin1 = cLatin1.toList(growable: false);
List fUtf16 = cUtf16.toList(growable: false);
List fCodepoints = cCodepoints.toList(growable: false);
Uint8List bLatin1 = new Uint8List(2)..setRange(0, 2, cLatin1);
Uint16List wLatin1 = new Uint16List(2)..setRange(0, 2, cLatin1);
Uint16List wUtf16 = new Uint16List(6)..setRange(0, 6, cUtf16);
Uint32List lLatin1 = new Uint32List(2)..setRange(0, 2, cLatin1);
Uint32List lUtf16 = new Uint32List(6)..setRange(0, 6, cUtf16);
Uint32List lCodepoints = new Uint32List(5)..setRange(0, 5, cCodepoints);
Uint8List bvLatin1 = new Uint8List.view(bLatin1.buffer);
Uint16List wvLatin1 = new Uint16List.view(wLatin1.buffer);
Uint16List wvUtf16 = new Uint16List.view(wUtf16.buffer);
Uint32List lvLatin1 = new Uint32List.view(lLatin1.buffer);
Uint32List lvUtf16 = new Uint32List.view(lUtf16.buffer);
Uint32List lvCodepoints = new Uint32List.view(lCodepoints.buffer);
var buffer = new Uint8List(200).buffer;
Uint8List bbLatin1 = new Uint8List.view(buffer, 3, 2)..setAll(0, bLatin1);
Uint16List wbLatin1 = new Uint16List.view(buffer, 8, 2)..setAll(0, wLatin1);
Uint16List wbUtf16 = new Uint16List.view(buffer, 16, 6)..setAll(0, wUtf16);
Uint32List lbLatin1 = new Uint32List.view(buffer, 32, 2)..setAll(0, lLatin1);
Uint32List lbUtf16 = new Uint32List.view(buffer, 64, 6)..setAll(0, lUtf16);
Uint32List lbCodepoints = new Uint32List.view(buffer, 128, 5)
..setAll(0, lCodepoints);
String sLatin1 = "\x00\xff";
String sUnicode =
"\x00\uffff$tailSurrogate$leadSurrogate$tailSurrogate$leadSurrogate";
for (int i = 0; i < 2; i++) {
for (int j = i + 1; j < 2; j++) {
test(sLatin1.substring(i, j), cLatin1, i, j);
test(sLatin1.substring(i, j), gLatin1, i, j);
test(sLatin1.substring(i, j), fLatin1, i, j);
test(sLatin1.substring(i, j), bLatin1, i, j);
test(sLatin1.substring(i, j), wLatin1, i, j);
test(sLatin1.substring(i, j), lLatin1, i, j);
test(sLatin1.substring(i, j), bvLatin1, i, j);
test(sLatin1.substring(i, j), wvLatin1, i, j);
test(sLatin1.substring(i, j), lvLatin1, i, j);
test(sLatin1.substring(i, j), bbLatin1, i, j);
test(sLatin1.substring(i, j), wbLatin1, i, j);
test(sLatin1.substring(i, j), lbLatin1, i, j);
}
}
for (int i = 0; i < 6; i++) {
for (int j = i + 1; j < 6; j++) {
test(sUnicode.substring(i, j), cUtf16, i, j);
test(sUnicode.substring(i, j), gUtf16, i, j);
test(sUnicode.substring(i, j), fUtf16, i, j);
test(sUnicode.substring(i, j), wUtf16, i, j);
test(sUnicode.substring(i, j), lUtf16, i, j);
test(sUnicode.substring(i, j), wvUtf16, i, j);
test(sUnicode.substring(i, j), lvUtf16, i, j);
test(sUnicode.substring(i, j), wbUtf16, i, j);
test(sUnicode.substring(i, j), lbUtf16, i, j);
}
}
for (int i = 0; i < 5; i++) {
for (int j = i + 1; j < 5; j++) {
int stringEnd = j < 4 ? j : j + 1;
test(sUnicode.substring(i, stringEnd), cCodepoints, i, j);
test(sUnicode.substring(i, stringEnd), gCodepoints, i, j);
test(sUnicode.substring(i, stringEnd), fCodepoints, i, j);
test(sUnicode.substring(i, stringEnd), lCodepoints, i, j);
test(sUnicode.substring(i, stringEnd), lvCodepoints, i, j);
test(sUnicode.substring(i, stringEnd), lbCodepoints, i, j);
}
}
}