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// Copyright (C) 2016 Jordan Harband. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-string.prototype.padstart
description: String#padStart should perform observable operations in the correct order
author: Jordan Harband
---*/
var log = "";
function createPrimitiveObserver(name, string, value) {
return {
toString: function() {
log += '|toString:' + name;
return string;
},
valueOf: function() {
log += '|valueOf:' + name;
return value;
}
};
};
var receiver = createPrimitiveObserver('receiver', {}, 'abc');
var fillString = createPrimitiveObserver('fillString', {}, 'def');
var maxLength = createPrimitiveObserver('maxLength', 11, {});
var result = String.prototype.padStart.call(receiver, maxLength, fillString);
assert.sameValue(result, 'defdefdeabc');
assert.sameValue(log, '|' + [
'toString:receiver',
'valueOf:receiver',
'valueOf:maxLength',
'toString:maxLength',
'toString:fillString',
'valueOf:fillString'
].join('|'), log);
reportCompare(0, 0);
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