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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-string.prototype.substring
description: The "this" value must be object-coercible
info: |
1. Let O be ? RequireObjectCoercible(this value).
---*/
var substring = String.prototype.substring;
assert.sameValue(typeof substring, 'function');
assert.throws(TypeError, function() {
substring.call(undefined, 0, 1);
}, 'undefined');
assert.throws(TypeError, function() {
substring.call(null, 0, 1);
}, 'null');
reportCompare(0, 0);
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