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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.concat
description: The "this" value must be object-coercible
info: |
1. Let O be ? RequireObjectCoercible(this value).
---*/
var concat = String.prototype.concat;
assert.sameValue(typeof concat, 'function');
assert.throws(TypeError, function() {
concat.call(undefined, '');
}, 'undefined');
assert.throws(TypeError, function() {
concat.call(null, '');
}, 'null');
reportCompare(0, 0);
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