rewire/test/testModules/moduleA.js

Dependency injection for node.js applications

"use strict"; // run code in ES5 strict mode

var someOtherModule = require("./someOtherModule.js"),
    myNumber = 0,   // copy by value
    myObj = {},     // copy by reference
    env = "bla",
    fs = require("fs");

// We need getters and setters for private vars to check if our injected setters and getters actual work
function setMyNumber(newNumber) {
    myNumber = newNumber;
}

function getMyNumber() {
    return myNumber;
}

function setMyObj(newObj) {
    myObj = newObj;
}

function getMyObj() {
    return myObj;
}

function readFileSync() {
    fs.readFileSync("bla.txt", "utf8");
}

function checkSomeGlobals() {
    if (typeof global === "undefined") {
        //throw new ReferenceError("global is undefined");
    }
    if (typeof process === "undefined") {
        throw new ReferenceError("process is undefined");
    }
    if (typeof console === "undefined") {
        throw new ReferenceError("console is undefined");
    }
    if (typeof Buffer === "undefined") {
        throw new ReferenceError("Buffer is undefined");
    }
    if (typeof __filename === "undefined") {
        throw new ReferenceError("__filename is undefined");
    }
    if (typeof __dirname === "undefined") {
        throw new ReferenceError("__dirname is undefined");
    }
    if (typeof setTimeout === "undefined") {
        throw new ReferenceError("setTimeout is undefined");
    }
}

function getConsole() {
    return console;
}

function getProcess() {
    return process;
}

function getFilename() {
    return __filename;
}

// different styles of exports in moduleA.js and moduleB.js
exports.setMyNumber = setMyNumber;
exports.getMyNumber = getMyNumber;
exports.setMyObj = setMyObj;
exports.getMyObj = getMyObj;
exports.readFileSync = readFileSync;
exports.checkSomeGlobals = checkSomeGlobals;
exports.getConsole = getConsole;
exports.getProcess = getProcess;
exports.getFilename = getFilename;
exports.someOtherModule = someOtherModule;