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v8/test/mjsunit/string-pad.js
Georg Neis 969a0548d1 [builtins] Fix String#pad{Start,End} for a large maxLength argument. 
If maxLength is larger than String::kMaxLength, we used to throw
immediately. However, we must first look at the filler argument, which
is observable. Moreover, if the filler is empty, we must return the
input unchanged.

Bug: v8:8078
Change-Id: Ic3d135f9e25da56df45b059144e45e19dda9c3d8
Reviewed-on: https://chromium-review.googlesource.com/1188313
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55414}
2018-08-24 19:50:09 +00:00

156 lines
6.6 KiB
JavaScript
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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
class MyError {};
const throwing = {toString() {throw new MyError}};
const empties = ['', {toString() {return ''}}];
{
const s = '';
assertThrows(_ => s.padStart(Symbol(), throwing), TypeError);
assertEquals(s, s.padStart(NaN, throwing));
assertEquals(s, s.padStart(-Infinity, throwing));
assertEquals(s, s.padStart(-9, throwing));
assertEquals(s, s.padStart(-1, throwing));
assertEquals(s, s.padStart(-0, throwing));
assertEquals(s, s.padStart(0, throwing));
assertThrows(_ => s.padStart(3, throwing), MyError);
assertThrows(_ => s.padStart(9, throwing), MyError);
assertThrows(_ => s.padStart(2**31-1, throwing), MyError);
assertThrows(_ => s.padStart(2**31, throwing), MyError);
assertThrows(_ => s.padStart(2**32-1, throwing), MyError);
assertThrows(_ => s.padStart(2**32, throwing), MyError);
assertThrows(_ => s.padStart(2**53-1, throwing), MyError);
assertThrows(_ => s.padStart(2**53, throwing), MyError);
assertThrows(_ => s.padStart(Infinity, throwing), MyError);
assertThrows(_ => s.padEnd(Symbol(), throwing), TypeError);
assertEquals(s, s.padEnd(NaN, throwing));
assertEquals(s, s.padEnd(-Infinity, throwing));
assertEquals(s, s.padEnd(-9, throwing));
assertEquals(s, s.padEnd(-1, throwing));
assertEquals(s, s.padEnd(-0, throwing));
assertEquals(s, s.padEnd(0, throwing));
assertThrows(_ => s.padEnd(3, throwing), MyError);
assertThrows(_ => s.padEnd(9, throwing), MyError);
assertThrows(_ => s.padEnd(2**31-1, throwing), MyError);
assertThrows(_ => s.padEnd(2**31, throwing), MyError);
assertThrows(_ => s.padEnd(2**32-1, throwing), MyError);
assertThrows(_ => s.padEnd(2**32, throwing), MyError);
assertThrows(_ => s.padEnd(2**53-1, throwing), MyError);
assertThrows(_ => s.padEnd(2**53, throwing), MyError);
assertThrows(_ => s.padEnd(Infinity, throwing), MyError);
for (const empty of empties) {
assertThrows(_ => s.padStart(Symbol(), empty), TypeError);
assertEquals(s, s.padStart(NaN, empty));
assertEquals(s, s.padStart(-Infinity, empty));
assertEquals(s, s.padStart(-9, empty));
assertEquals(s, s.padStart(-1, empty));
assertEquals(s, s.padStart(-0, empty));
assertEquals(s, s.padStart(0, empty));
assertEquals(s, s.padStart(3, empty));
assertEquals(s, s.padStart(9, empty));
assertEquals(s, s.padStart(2**31-1, empty));
assertEquals(s, s.padStart(2**31, empty));
assertEquals(s, s.padStart(2**32-1, empty));
assertEquals(s, s.padStart(2**32, empty));
assertEquals(s, s.padStart(2**53-1, empty));
assertEquals(s, s.padStart(2**53, empty));
assertEquals(s, s.padStart(Infinity, empty));
assertThrows(_ => s.padEnd(Symbol(), empty), TypeError);
assertEquals(s, s.padEnd(NaN, empty));
assertEquals(s, s.padEnd(-Infinity, empty));
assertEquals(s, s.padEnd(-9, empty));
assertEquals(s, s.padEnd(-1, empty));
assertEquals(s, s.padEnd(-0, empty));
assertEquals(s, s.padEnd(0, empty));
assertEquals(s, s.padEnd(3, empty));
assertEquals(s, s.padEnd(9, empty));
assertEquals(s, s.padEnd(2**31-1, empty));
assertEquals(s, s.padEnd(2**31, empty));
assertEquals(s, s.padEnd(2**32-1, empty));
assertEquals(s, s.padEnd(2**32, empty));
assertEquals(s, s.padEnd(2**53-1, empty));
assertEquals(s, s.padEnd(2**53, empty));
assertEquals(s, s.padEnd(Infinity, empty));
}
}
{
const s = 'hello';
assertThrows(_ => s.padStart(Symbol(), throwing), TypeError);
assertEquals(s, s.padStart(NaN, throwing));
assertEquals(s, s.padStart(-Infinity, throwing));
assertEquals(s, s.padStart(-9, throwing));
assertEquals(s, s.padStart(-1, throwing));
assertEquals(s, s.padStart(-0, throwing));
assertEquals(s, s.padStart(0, throwing));
assertEquals(s, s.padStart(3, throwing));
assertThrows(_ => s.padStart(9, throwing), MyError);
assertThrows(_ => s.padStart(2**31-1, throwing), MyError);
assertThrows(_ => s.padStart(2**31, throwing), MyError);
assertThrows(_ => s.padStart(2**32-1, throwing), MyError);
assertThrows(_ => s.padStart(2**32, throwing), MyError);
assertThrows(_ => s.padStart(2**53-1, throwing), MyError);
assertThrows(_ => s.padStart(2**53, throwing), MyError);
assertThrows(_ => s.padStart(Infinity, throwing), MyError);
assertThrows(_ => s.padEnd(Symbol(), throwing), TypeError);
assertEquals(s, s.padEnd(NaN, throwing));
assertEquals(s, s.padEnd(-Infinity, throwing));
assertEquals(s, s.padEnd(-9, throwing));
assertEquals(s, s.padEnd(-1, throwing));
assertEquals(s, s.padEnd(-0, throwing));
assertEquals(s, s.padEnd(0, throwing));
assertEquals(s, s.padEnd(3, throwing));
assertThrows(_ => s.padEnd(9, throwing), MyError);
assertThrows(_ => s.padEnd(2**31-1, throwing), MyError);
assertThrows(_ => s.padEnd(2**31, throwing), MyError);
assertThrows(_ => s.padEnd(2**32-1, throwing), MyError);
assertThrows(_ => s.padEnd(2**32, throwing), MyError);
assertThrows(_ => s.padEnd(2**53-1, throwing), MyError);
assertThrows(_ => s.padEnd(2**53, throwing), MyError);
assertThrows(_ => s.padEnd(Infinity, throwing), MyError);
for (const empty of empties) {
assertThrows(_ => s.padStart(Symbol(), empty), TypeError);
assertEquals(s, s.padStart(NaN, empty));
assertEquals(s, s.padStart(-Infinity, empty));
assertEquals(s, s.padStart(-9, empty));
assertEquals(s, s.padStart(-1, empty));
assertEquals(s, s.padStart(-0, empty));
assertEquals(s, s.padStart(0, empty));
assertEquals(s, s.padStart(3, empty));
assertEquals(s, s.padStart(9, empty));
assertEquals(s, s.padStart(2**31-1, empty));
assertEquals(s, s.padStart(2**31, empty));
assertEquals(s, s.padStart(2**32-1, empty));
assertEquals(s, s.padStart(2**32, empty));
assertEquals(s, s.padStart(2**53-1, empty));
assertEquals(s, s.padStart(2**53, empty));
assertEquals(s, s.padStart(Infinity, empty));
assertThrows(_ => s.padEnd(Symbol(), empty), TypeError);
assertEquals(s, s.padEnd(NaN, empty));
assertEquals(s, s.padEnd(-Infinity, empty));
assertEquals(s, s.padEnd(-9, empty));
assertEquals(s, s.padEnd(-1, empty));
assertEquals(s, s.padEnd(-0, empty));
assertEquals(s, s.padEnd(0, empty));
assertEquals(s, s.padEnd(3, empty));
assertEquals(s, s.padEnd(9, empty));
assertEquals(s, s.padEnd(2**31-1, empty));
assertEquals(s, s.padEnd(2**31, empty));
assertEquals(s, s.padEnd(2**32-1, empty));
assertEquals(s, s.padEnd(2**32, empty));
assertEquals(s, s.padEnd(2**53-1, empty));
assertEquals(s, s.padEnd(2**53, empty));
assertEquals(s, s.padEnd(Infinity, empty));
}
}
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