// Copyright (c) 2013, 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.

// @dart = 2.9

/// @assertion String join([String separator = ""])
/// Converts each element to a String and concatenates the strings.
/// Iterates through elements of this iterable, converts each one to a String by
/// calling Object.toString, and then concatenates the strings, with the
/// separator string interleaved between the elements.
/// @description Checks that the returned [String] contains all elements from
/// [this] separated by [separator].
/// @author msyabro


import "dart:typed_data";
import "../../../Utils/expect.dart";

check(List<int> list, String separator, String expectedString) {
  var l = new Uint32List.fromList(list);
  var s = l.join(separator);
  Expect.stringEquals(expectedString, s);
}

main() {
  check([], "", "");
  check([], ", ", "");
  check([1], ", ", "1");
  check([1, 2, 3, 4, 5, 6, 7, 8, 9], "  ", "1  2  3  4  5  6  7  8  9");
}