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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";
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.
}