ponyfills/__tests__/objectAssign.js

Delivers ponyfills as modules, uses native alternatives first when available

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var objectAssign_1 = tslib_1.__importStar(require("../objectAssign"));
describe('objectAssign', function () {
    test('having the original Object.assign if available', function () {
        if (Object.hasOwnProperty('assign')) {
            expect(Object.assign).toBe(objectAssign_1.default);
        }
    });
    test('ensure skipping null/undefined sources', function () {
        var obj1 = {};
        var obj2 = null;
        var obj3 = undefined;
        var result = objectAssign_1.objectAssignPolyfill(obj1, obj2, obj3);
        expect(result).toBe(obj1);
        expect(result).toEqual(obj1);
    });
    test('assign values right to left', function () {
        var obj1 = {};
        var obj2 = { test: true };
        var result = objectAssign_1.objectAssignPolyfill(obj1, obj2);
        expect(result).toBe(obj1);
        expect(result).not.toBe(obj2);
        expect(result).toEqual({ test: true });
    });
});
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