test/script/basic/es6/let_const_closure.js

/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * JDK-8057678: Tests for let&const keywords in Nashorn
 *
 * @test
 * @run
 * @option --language=es6
 * @option -scripting
 */

function tryIt(code) {
    try {
        eval(code)
    } catch (e) {
        print(e)
    }
}


tryIt(<<CODE
    function a () {
        this.val = 41
        let self = this
        this.b = function () {
            return self.val;
        }
    }
    c = new a()
    print(c.b.call(null))
CODE)


tryIt(<<CODE
        function a () {
            this.val = 42
            let self = this
            this.b = function () {
                return this.val;
            }.bind(self)
        }
        c = new a()
        print(c.b.call(null))
CODE)

tryIt(<<CODE
    function a () {
        this.val = 43
        const self = this
        this.b = function () {
            return self.val;
        }
    }
    c = new a()
    print(c.b.call(null))
CODE)

tryIt(<<CODE
        function a () {
            this.val = 44
            const self = this
            this.b = function () {
                return this.val;
            }.bind(self)
        }
        c = new a()
        print(c.b.call(null))
CODE)

tryIt(<<CODE
       let a = {name : 'test'}
       let f = function () {
            print(this.name)
       }
       let nf = f.bind(a)
       nf()
       if (true) {
            let a = null
            nf()
       }
       nf()
CODE)


tryIt(<<CODE
       let arr = []
       for (let i = 0; i < 3; i++) {
           arr[i] = function(){return i;}
       }
       for (let i in arr) {
            print(arr[i]())
       }
       arr = []
       for (var i = 0; i < 3; i++) {
            (function(i){
                arr[i] = function(){return i;}
            })(i)
       }
       for (let i in arr) {
           print(arr[i]())
       }
CODE)