lrn@google.com
2ef0e0b993
Review URL: https://codereview.chromium.org//608213002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@40760 260f80e4-7a28-3924-810f-c04153c831b5
197 lines
6.7 KiB
Dart
197 lines
6.7 KiB
Dart
// Copyright (c) 2012, 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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import "package:expect/expect.dart";
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import "dart:typed_data";
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main() {
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iter(count, [values]) => values is List
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? new Iterable.generate(count, (x) => values[x])
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: new Iterable.generate(count, (x) => values);
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test(expect, iter, [start = 0, end]) {
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Expect.equals(expect, new String.fromCharCodes(iter, start, end));
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}
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testThrows(iterable, [start = 0, end]) {
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Expect.throws(() { new String.fromCharCodes(iterable, start, end); });
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}
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test("", iter(0));
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test("", []);
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test("", const []);
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test("", new List(0));
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test("", new Uint8List(0));
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test("", new Uint16List(0));
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test("", new Uint32List(0));
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test("", "".codeUnits);
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test("\x00", iter(1, 0));
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test("\x00", [0]);
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test("\x00", const [0]);
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test("\x00", new List(1)..[0]=0);
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test("\x00", new Uint8List(1));
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test("\x00", new Uint16List(1));
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test("\x00", new Uint32List(1));
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test("\x00", "\x00".codeUnits);
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test("\xff", iter(1, 255));
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test("\xFF", [255]);
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test("\xFF", const [255]);
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test("\xFF", new List(1)..[0]=255);
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test("\xFF", new Uint8List(1)..[0] = 255);
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test("\xFF", new Uint16List(1)..[0] = 255);
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test("\xFF", new Uint32List(1)..[0] = 255);
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test("\xFF", "\xFF".codeUnits);
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test("\u0100", iter(1, 256));
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test("\u0100", [256]);
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test("\u0100", const [256]);
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test("\u0100", new List(1)..[0]=256);
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test("\u0100", new Uint16List(1)..[0] = 256);
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test("\u0100", new Uint32List(1)..[0] = 256);
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test("\u0100", "\u0100".codeUnits);
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test("\uffff", iter(1, 65535));
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test("\uffff", [65535]);
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test("\uffff", const [65535]);
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test("\uffff", new List(1)..[0]=65535);
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test("\uffff", new Uint16List(1)..[0] = 65535);
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test("\uffff", new Uint32List(1)..[0] = 65535);
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test("\uffff", "\uffff".codeUnits);
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test("\u{10000}", iter(1, 65536));
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test("\u{10000}", [65536]);
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test("\u{10000}", const [65536]);
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test("\u{10000}", new List(1)..[0]=65536);
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test("\u{10000}", new Uint32List(1)..[0]=65536);
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test("\u{10000}", "\u{10000}".codeUnits);
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test("\u{10FFFF}", iter(1, 0x10FFFF));
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test("\u{10FFFF}", [0x10FFFF]);
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test("\u{10FFFF}", const [0x10FFFF]);
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test("\u{10FFFF}", new List(1)..[0]=0x10FFFF);
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test("\u{10FFFF}", new Uint32List(1)..[0] = 0x10FFFF);
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test("\u{10ffff}", iter(2, [0xDBFF, 0xDFFF]));
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test("\u{10ffff}", [0xDBFF, 0xDFFF]);
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test("\u{10ffff}", const [0xDBFF, 0xDFFF]);
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test("\u{10ffff}", new List(2)..[0] = 0xDBFF..[1] = 0xDFFF);
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test("\u{10ffff}", new Uint16List(2)..[0] = 0xDBFF..[1] = 0xDFFF);
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test("\u{10ffff}", new Uint32List(2)..[0] = 0xDBFF..[1] = 0xDFFF);
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test("\u{10FFFF}", "\u{10FFFF}".codeUnits);
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var leadSurrogate = "\u{10ffff}"[0];
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test(leadSurrogate, iter(1, 0xDBFF));
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test(leadSurrogate, [0xDBFF]);
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test(leadSurrogate, const [0xDBFF]);
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test(leadSurrogate, new List(1)..[0]=0xDBFF);
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test(leadSurrogate, new Uint16List(1)..[0] = 0xDBFF);
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test(leadSurrogate, new Uint32List(1)..[0] = 0xDBFF);
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test(leadSurrogate, leadSurrogate.codeUnits);
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var tailSurrogate = "\u{10ffff}"[1];
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test(tailSurrogate, iter(1, 0xDFFF));
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test(tailSurrogate, [0xDFFF]);
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test(tailSurrogate, const [0xDFFF]);
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test(tailSurrogate, new List(1)..[0]=0xDFFF);
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test(tailSurrogate, new Uint16List(1)..[0] = 0xDFFF);
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test(tailSurrogate, new Uint32List(1)..[0] = 0xDFFF);
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test(tailSurrogate, tailSurrogate.codeUnits);
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testThrows(null);
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testThrows("not an iterable");
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testThrows(42);
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testThrows([-1]);
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testThrows(new List(1)..[0] = -1);
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testThrows(const [-1]);
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testThrows(new Int8List(1)..[0] = -1);
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testThrows(new Int16List(1)..[0] = -1);
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testThrows(new Int32List(1)..[0] = -1);
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testThrows([0x110000]);
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testThrows(new List(1)..[0] = 0x110000);
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testThrows(const [0x110000]);
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testThrows(new Int32List(1)..[0] = 0x110000);
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// Check start/end
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var list = const[0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48];
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for (var iterable in [
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iter(list.length, list),
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list.toList(growable: true),
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list.toList(growable: false),
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list,
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new Uint8List(8)..setRange(0, 8, list),
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new Uint16List(8)..setRange(0, 8, list),
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new Uint32List(8)..setRange(0, 8, list),
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"ABCDEFGH".codeUnits,
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]) {
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test("ABCDEFGH", iterable);
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// start varies, end is null.
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test("ABCDEFGH", iterable, 0);
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test("BCDEFGH", iterable, 1);
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test("H", iterable, 7);
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test("", iterable, 8);
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// start = 0, end varies.
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test("ABCDEFGH", iterable, 0);
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test("A", iterable, 0, 1);
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test("AB", iterable, 0, 2);
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test("ABCDEFG", iterable, 0, 7);
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test("ABCDEFGH", iterable, 0, 8);
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test("", iterable, 0, 0);
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// Both varying.
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test("ABCDEFGH", iterable, 0, 8);
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test("AB", iterable, 0, 2);
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test("GH", iterable, 6, 8);
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test("DE", iterable, 3, 5);
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test("", iterable, 3, 3);
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}
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// Can split surrogates in input, but not a single big code point.
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test(leadSurrogate, [0xDBFF, 0xDFFF], 0, 1);
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test(tailSurrogate, [0xDBFF, 0xDFFF], 1);
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test("\u{10FFFF}", [0x10FFFF], 0, 1);
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void testThrowsRange(iterable, [start = 0, end]) {
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Expect.throws(() => new String.fromCharCodes(iterable, start, end),
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(e) => e is RangeError);
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}
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// Test varying slices of the code units of a string.
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testSubstring(string) {
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var codes = string.codeUnits;
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int length = string.length;
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for (var iterable in [
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iter(length, codes),
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codes.toList(growable: true),
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codes.toList(growable: false),
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new Uint16List(length)..setRange(0, length, codes),
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new Int32List(length)..setRange(0, length, codes),
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new Uint32List(length)..setRange(0, length, codes),
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codes,
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]) {
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var newString = new String.fromCharCodes(iterable);
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Expect.equals(string, newString);
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for (int i = 0; i < length; i = i * 2 + 1) {
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test(string.substring(i), iterable, i);
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test(string.substring(0, i), iterable, 0, i);
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for (int j = 0; i + j < length; j = j * 2 + 1) {
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test(string.substring(i, i + j), iterable, i, i + j);
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}
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}
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testThrowsRange(iterable, -1);
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testThrowsRange(iterable, 0, -1);
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testThrowsRange(iterable, 2, 1);
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testThrowsRange(iterable, 0, length + 1);
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testThrowsRange(iterable, length + 1);
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testThrowsRange(iterable, length + 1, length + 2);
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}
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}
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testSubstring("");
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testSubstring("ABCDEFGH");
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// length > 128
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testSubstring("ABCDEFGH" * 33);
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testSubstring("\x00" * 357);
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// length > 128 and non-ASCII.
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testSubstring("\uFFFD\uFFFE\u{10000}\u{10ffff}c\x00" * 37);
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}
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