microvium/dist/test/hello-world.test.js

A compact, embeddable scripting engine for microcontrollers for executing small scripts written in a subset of JavaScript.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const lib_1 = require("../lib");
const chai_1 = require("chai");
suite('hello-world', function () {
    test('create', () => {
        const logs = [];
        const vm = lib_1.Microvium.create();
        vm.globalThis.print = (s) => logs.push(s);
        vm.evaluateModule({ sourceText: 'print("Hello, World!");' });
        chai_1.assert.deepEqual(logs, ['Hello, World!']);
    });
    test('restore', () => {
        // These IDs are shared knowledge between the two epochs
        const PRINT = 1;
        const SAY_HELLO = 42;
        const logs = [];
        const print = (s) => void logs.push(s);
        const importMap = {
            [PRINT]: print
        };
        const vm1 = lib_1.Microvium.create(importMap);
        vm1.globalThis.print = vm1.vmImport(PRINT);
        vm1.globalThis.vmExport = vm1.vmExport;
        vm1.evaluateModule({ sourceText: `
      vmExport(${SAY_HELLO}, sayHello);
      function sayHello() {
        print('Hello, World!');
      }
    ` });
        const snapshot = vm1.createSnapshot();
        // Restore the VM with access to the same set of imports by ID
        const vm2 = lib_1.Microvium.restore(snapshot, importMap);
        const sayHello = vm2.resolveExport(SAY_HELLO);
        chai_1.assert.deepEqual(logs, []);
        sayHello();
        chai_1.assert.deepEqual(logs, ['Hello, World!']);
    });
});
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