shift-interpreter/test/evaluation/context.test.ts

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

import { assertResult, compare } from '../util';
import chai, { expect } from 'chai';
import spies from 'chai-spies';

chai.use(spies);

describe('External context', () => {
  it('should call functions defined on the context', () => {
    const console = {
      log: function(msg: string) {
        return undefined;
      },
    };
    chai.spy.on(console, 'log');

    assertResult(
      compare(
        `
      console.log("Hello world");
    `,
        { console },
      ),
    );

    expect(console.log).to.have.been.called.with('Hello world');
  });
});