shift-interpreter/dist/test/evaluation/objects-and-arrays.test.js

Shift-interpreter is an experimental JavaScript meta-interpreter useful for reverse engineering and analysis. One notable difference from other projects is that shift-interpreter retains state over an entire script but can be fed expressions and statement

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const util_1 = require("../util");
describe('Objects', () => {
    it('should not interfere with external promises', () => {
        //@ts-ignore
        const outer = (global.outer = new Promise(res => {
            res(22);
        }));
        util_1.assertResult(util_1.compare('let inner = this.outer; inner', { outer }));
        //@ts-ignore
        delete global.outer;
    });
    it('should evaluate object expressions and allow static member access', () => {
        util_1.assertResult(util_1.compare('let a = {b:2}; a.b;'));
    });
    it('should evaluate object expressions and allow computed member access', () => {
        util_1.assertResult(util_1.compare('let a = {b:2}; a["b"];'));
    });
    it('should evaluate complex objects', () => {
        util_1.assertResult(util_1.compare('let a = {b:2,c:{ca:"hello"}}; a.c.ca;'));
    });
    it('should evaluate methods on objects', () => {
        util_1.assertResult(util_1.compare('let a = {b(a){return a}}; a.b(2);'));
    });
    it('should evaluate shorthand props', () => {
        util_1.assertResult(util_1.compare('let b = 2; let a = {b}; a.b;'));
    });
    // ES2018, not implemented in shift parser yet
    xit('should evaluate objects with rest/spread element', () => {
        util_1.assertResult(util_1.compare('let b = {a:1,b:2,c:3}; let a = {...b}; a.a+a.b+a.c === b.a+b.b+b.c;'));
    });
    it('should allow for object member assignment', () => {
        util_1.assertResult(util_1.compare('let a = {}; a.b = 2;'));
        util_1.assertResult(util_1.compare('let a = {}; a["b"] = 2;'));
    });
});
describe('Arrays', () => {
    it('should parse array expressions', () => {
        util_1.assertResult(util_1.compare('let a = [1,2,3,4]; a[3];'));
    });
    it('should parse array expressions with spread', () => {
        util_1.assertResult(util_1.compare('let a = [1,2,3,4], b = [...a];b'));
    });
});
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