// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- info: > This test is actually testing the [[Delete]] internal method (8.12.8). Since the language provides no way to directly exercise [[Delete]], the tests are placed here. es5id: 11.4.1-4.a-17 description: delete operator returns true on deleting a arguments element ---*/ function foo(a,b) { var d = delete arguments[0]; return (d === true && arguments[0] === undefined); } assert.sameValue(foo(1,2), true, 'foo(1,2)');