v8/test/mjsunit/es6/string-repeat.js
adamk 8e2e69a4b5 [es6] Allow any valid repeat of empty string in String.prototype.repeat
This lets us pass one test262 test (and seems to match what other
implementations do to handle this case).

R=littledan@chromium.org
BUG=v8:4362
LOG=n

Review URL: https://codereview.chromium.org/1454543003

Cr-Commit-Position: refs/heads/master@{#32155}
2015-11-20 23:57:39 +00:00

82 lines
3.9 KiB
JavaScript

// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
assertEquals("000", String.prototype.repeat.call(0, 3));
assertEquals("-1-1-1", String.prototype.repeat.call(-1, 3));
assertEquals("2.12.12.1", String.prototype.repeat.call(2.1, 3));
assertEquals("", String.prototype.repeat.call([], 3));
assertEquals("1,2,3", String.prototype.repeat.call([1, 2, 3], 1));
assertEquals("true", String.prototype.repeat.call(true, 1));
assertEquals("false", String.prototype.repeat.call(false, 1));
assertEquals("[object Object]", String.prototype.repeat.call({}, 1));
assertEquals("000", String.prototype.repeat.apply(0, [3]));
assertEquals("-1-1-1", String.prototype.repeat.apply(-1, [3]));
assertEquals("2.12.12.1", String.prototype.repeat.apply(2.1, [3]));
assertEquals("", String.prototype.repeat.apply([], [3]));
assertEquals("1,2,3", String.prototype.repeat.apply([1, 2, 3], [1]));
assertEquals("true", String.prototype.repeat.apply(true, [1]));
assertEquals("false", String.prototype.repeat.apply(false, [1]));
assertEquals("[object Object]", String.prototype.repeat.apply({}, [1]));
assertEquals("\u10D8\u10D8\u10D8", "\u10D8".repeat(3));
assertThrows('String.prototype.repeat.call(null, 1)', TypeError);
assertThrows('String.prototype.repeat.call(undefined, 1)', TypeError);
assertThrows('String.prototype.repeat.apply(null, [1])', TypeError);
assertThrows('String.prototype.repeat.apply(undefined, [1])', TypeError);
// Test cases found in FF
assertEquals("abc", "abc".repeat(1));
assertEquals("abcabc", "abc".repeat(2));
assertEquals("abcabcabc", "abc".repeat(3));
assertEquals("aaaaaaaaaa", "a".repeat(10));
assertEquals("", "".repeat(5));
assertEquals("", "abc".repeat(0));
assertEquals("abcabc", "abc".repeat(2.0));
assertEquals("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "a".repeat(37));
assertThrows('"a".repeat(-1)', RangeError);
assertThrows('"a".repeat(Number.POSITIVE_INFINITY)', RangeError);
assertThrows('"a".repeat(Math.pow(2, 30))', RangeError);
assertThrows('"a".repeat(Math.pow(2, 40))', RangeError);
// Handling empty strings
assertThrows('"".repeat(-1)', RangeError);
assertThrows('"".repeat(Number.POSITIVE_INFINITY)', RangeError);
assertEquals("", "".repeat(Math.pow(2, 30)));
assertEquals("", "".repeat(Math.pow(2, 40)));
var myobj = {
toString: function() {
return "abc";
},
repeat : String.prototype.repeat
};
assertEquals("abc", myobj.repeat(1));
assertEquals("abcabc", myobj.repeat(2));