JSTests/ChakraCore/test/es6/ES6SubclassableAsync.js

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------

// ES6 Subclassable async tests -- verifies subclass async behaviors

WScript.LoadScriptFile("..\\UnitTestFramework\\UnitTestFramework.js");

var tests = [
    {
        name: "Subclass of Promise - basic functionality",
        body: function (testNum, testName) {
            var s = "";
            class P extends Promise {}
            var p1 = new P(function(resolve, reject) { resolve("foo"); });
            var p2 = new P(function(resolve, reject) { reject("quux"); });
            s += "a";
            assert.isTrue(p1 instanceof P);

            function thenFn(result)  { assert.isTrue(result === "foo"); s += 'b'; }
            function catchFn(result) { assert.isTrue(result === "quux"); s += 'c'; }
            function shouldNotRun(result)  { assert.isTrue(false);   }

            p1.then(thenFn, shouldNotRun);
            p2.then(shouldNotRun, catchFn);
            p1.catch(shouldNotRun);
            p2.catch(catchFn);

            p1.then(function() {
                // P.prototype.then() should return a new P
                assert.isTrue(p1.then() instanceof P && p1.then() !== p1);
                s += 'd';
                check();
            });

            function check() {
                print("Result of test #" + testNum + " " + testName);
                print(s);
            }
        }
    },
    {
        name: "Subclass of Promise - all",
        body: function (testNum, testName) {
            var s = "";
            class P extends Promise {}
            var fulfills = P.all([
                new Promise(function(resolve)   { resolve("foo"); }),
                new Promise(function(resolve)   { resolve("foo"); }),
            ]);
            s += "a";
            var rejects = P.all([
                new Promise(function(_, reject) { reject("bar"); }),
                new Promise(function(_, reject) { reject("bar"); }),
            ]);
            assert.isTrue(fulfills instanceof P);
            fulfills.then(function(result) { assert.isTrue(result + "" === "foo,foo"); s += 'b'; });
            rejects.catch(function(result) { assert.isTrue(result === "bar"); s += 'c'; check(); });

            function check() {
                print("Result of test #" + testNum + " " + testName);
                print(s);
            }
        }
    },
    {
        name: "Subclass of Promise - race",
        body: function (testNum, testName) {
            var s = "";
            class P extends Promise {}
            var fulfills = P.race([
              new Promise(function(resolve)   { resolve("foo"); }),
              new Promise(function(_, reject) { reject("bar"); }),
            ]);
            s += "a";
            var rejects = P.race([
              new Promise(function(_, reject) { reject("baz"); }),
              new Promise(function(resolve)   { resolve("qux"); }),
            ]);
            assert.isTrue(fulfills instanceof P);
            fulfills.then(function(result) { assert.isTrue(result === "foo"); s += 'b' });
            rejects.catch(function(result) { assert.isTrue(result === "baz"); s += 'c'; check(); });

            function check() {
                print("Result of test #" + testNum + " " + testName);
                print(s);
            }
        }
    },
];

for(var i=0; i<tests.length; i++ )
{
    var test=tests[i];
    print("Executing test #" + (i+1) + " " + test.name);
    test.body(i+1, test.name);
}