| // 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"; |
| |
| class IC { |
| int count = 0; |
| String toString() => "${count++}"; |
| } |
| |
| testJoin(String expect, Iterable iterable, [String separator]) { |
| if (separator != null) { |
| Expect.equals(expect, iterable.join(separator)); |
| } else { |
| Expect.equals(expect, iterable.join()); |
| } |
| } |
| |
| testCollections() { |
| testJoin("", [], ","); |
| testJoin("", [], ""); |
| testJoin("", []); |
| testJoin("", new Set(), ","); |
| testJoin("", new Set(), ""); |
| testJoin("", new Set()); |
| |
| testJoin("42", [42], ","); |
| testJoin("42", [42], ""); |
| testJoin("42", [42]); |
| testJoin("42", new Set()..add(42), ","); |
| testJoin("42", new Set()..add(42), ""); |
| testJoin("42", new Set()..add(42)); |
| |
| testJoin("a,b,c,d", ["a", "b", "c", "d"], ","); |
| testJoin("abcd", ["a", "b", "c", "d"], ""); |
| testJoin("abcd", ["a", "b", "c", "d"]); |
| testJoin("null,b,c,d", [null, "b", "c", "d"], ","); |
| testJoin("1,2,3,4", [1, 2, 3, 4], ","); |
| var ic = new IC(); |
| testJoin("0,1,2,3", [ic, ic, ic, ic], ","); |
| |
| var set = new Set()..add(1)..add(2)..add(3); |
| var perm = new Set() |
| ..add("123") |
| ..add("132") |
| ..add("213") |
| ..add("231") |
| ..add("312") |
| ..add("321"); |
| var setString = set.join(); |
| Expect.isTrue(perm.contains(setString), "set: $setString"); |
| |
| void testArray(List<int> array) { |
| testJoin("1,3,5,7,9", array.where((i) => i.isOdd), ","); |
| testJoin("0,2,4,6,8,10,12,14,16,18", array.map((i) => i * 2), ","); |
| testJoin("5,6,7,8,9", array.skip(5), ","); |
| testJoin("5,6,7,8,9", array.skipWhile((i) => i < 5), ","); |
| testJoin("0,1,2,3,4", array.take(5), ","); |
| testJoin("0,1,2,3,4", array.takeWhile((i) => i < 5), ","); |
| } |
| |
| testArray([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); |
| var fixedArray = new List<int>(10); |
| for (int i = 0; i < 10; i++) { |
| fixedArray[i] = i; |
| } |
| testArray(fixedArray); |
| testArray(const [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); |
| |
| testJoin("a,b,c,d", ["a", "b", "c", "d"].map((x) => x), ","); |
| testJoin("abcd", ["a", "b", "c", "d"].map((x) => x), ""); |
| testJoin("abcd", ["a", "b", "c", "d"].map((x) => x)); |
| testJoin("null,b,c,d", [null, "b", "c", "d"].map((x) => x), ","); |
| testJoin("1,2,3,4", [1, 2, 3, 4].map((x) => x), ","); |
| testJoin("4,5,6,7", [ic, ic, ic, ic].map((x) => x), ","); |
| } |
| |
| void testStringVariants() { |
| // ASCII |
| testJoin("axbxcxd", ["a", "b", "c", "d"], "x"); |
| testJoin("a\u2000b\u2000c\u2000d", ["a", "b", "c", "d"], "\u2000"); |
| testJoin("abcd", ["a", "b", "c", "d"], ""); |
| testJoin("abcd", ["a", "b", "c", "d"]); |
| // Non-ASCII |
| testJoin("axbxcx\u2000", ["a", "b", "c", "\u2000"], "x"); |
| testJoin("a\u2000b\u2000c\u2000\u2000", ["a", "b", "c", "\u2000"], "\u2000"); |
| testJoin("abc\u2000", ["a", "b", "c", "\u2000"], ""); |
| testJoin("abc\u2000", ["a", "b", "c", "\u2000"]); |
| // Long-ASCII |
| testJoin("ax" * 255 + "a", new List.generate(256, (_) => "a"), "x"); |
| testJoin("a" * 256, new List.generate(256, (_) => "a")); |
| // Long-Non-ASCII |
| testJoin("a\u2000" * 255 + "a", new List.generate(256, (_) => "a"), "\u2000"); |
| testJoin("\u2000" * 256, new List.generate(256, (_) => "\u2000")); |
| testJoin( |
| "\u2000x" * 255 + "\u2000", new List.generate(256, (_) => "\u2000"), "x"); |
| |
| var o1 = new Stringable("x"); |
| var o2 = new Stringable("\ufeff"); |
| testJoin("xa" * 3 + "x", [o1, o1, o1, o1], "a"); |
| testJoin("x" * 4, [o1, o1, o1, o1], ""); |
| testJoin("x" * 4, [o1, o1, o1, o1]); |
| |
| testJoin("\ufeffx" * 3 + "\ufeff", [o2, o2, o2, o2], "x"); |
| testJoin("\ufeff" * 4, [o2, o2, o2, o2], ""); |
| testJoin("\ufeff" * 4, [o2, o2, o2, o2]); |
| |
| testJoin("a\u2000x\ufeff", ["a", "\u2000", o1, o2]); |
| testJoin("a\u2000\ufeffx", ["a", "\u2000", o2, o1]); |
| testJoin("ax\u2000\ufeff", ["a", o1, "\u2000", o2]); |
| testJoin("ax\ufeff\u2000", ["a", o1, o2, "\u2000"]); |
| testJoin("a\ufeffx\u2000", ["a", o2, o1, "\u2000"]); |
| testJoin("a\ufeff\u2000x", ["a", o2, "\u2000", o1]); |
| |
| testJoin("\u2000ax\ufeff", ["\u2000", "a", o1, o2]); |
| testJoin("\u2000a\ufeffx", ["\u2000", "a", o2, o1]); |
| testJoin("xa\u2000\ufeff", [o1, "a", "\u2000", o2]); |
| testJoin("xa\ufeff\u2000", [o1, "a", o2, "\u2000"]); |
| testJoin("\ufeffax\u2000", [o2, "a", o1, "\u2000"]); |
| testJoin("\ufeffa\u2000x", [o2, "a", "\u2000", o1]); |
| |
| testJoin("\u2000xa\ufeff", ["\u2000", o1, "a", o2]); |
| testJoin("\u2000\ufeffax", ["\u2000", o2, "a", o1]); |
| testJoin("x\u2000a\ufeff", [o1, "\u2000", "a", o2]); |
| testJoin("x\ufeffa\u2000", [o1, o2, "a", "\u2000"]); |
| testJoin("\ufeffxa\u2000", [o2, o1, "a", "\u2000"]); |
| testJoin("\ufeff\u2000ax", [o2, "\u2000", "a", o1]); |
| |
| testJoin("\u2000x\ufeffa", ["\u2000", o1, o2, "a"]); |
| testJoin("\u2000\ufeffxa", ["\u2000", o2, o1, "a"]); |
| testJoin("x\u2000\ufeffa", [o1, "\u2000", o2, "a"]); |
| testJoin("x\ufeff\u2000a", [o1, o2, "\u2000", "a"]); |
| testJoin("\ufeffx\u2000a", [o2, o1, "\u2000", "a"]); |
| testJoin("\ufeff\u2000xa", [o2, "\u2000", o1, "a"]); |
| } |
| |
| class Stringable { |
| final String value; |
| Stringable(this.value); |
| String toString() => value; |
| } |
| |
| main() { |
| testCollections(); |
| testStringVariants(); |
| // TODO(lrn): test scalar lists. |
| } |