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Commit07496ad

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all tests up and running
1 parentfb06490 commit07496ad

14 files changed

+380
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‎LICENSE

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Copyright (c) 2012 Nathan MacInnes
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎Makefile

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test:
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mocha -R spec
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.PHONY:test

‎lib/getLeakingSrc.js

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"use strict";// run code in ES5 strict mode
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functiongetLeakingSrc(leaks){
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varsrc="exports.__ = {",
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varName,
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i;
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for(i=0;i<leaks.length;i++){
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varName=leaks[i];
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src+=(varName+":"+varName+",");
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}
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if(i>0){
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src=src.slice(0,-1);// trim last comma
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}
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src+="};";
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returnsrc;
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}
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module.exports=getLeakingSrc;

‎lib/getMonkeyPatchSrc.js

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"use strict";// run code in ES5 strict mode
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vartoSrc=require("toSrc");
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functiongetMonkeyPatchSrc(obj){
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functionwalkObj(obj,level){
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varkey,
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value,
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src="";
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for(keyinobj){
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if(obj.hasOwnProperty(key)){
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value=obj[key];
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if(typeofvalue==="object"&&Array.isArray(value)===false){
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src+=key+".";
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src+=walkObj(value,level+1);
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}else{
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if(level===0){
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src+="var ";// in the top level, we need a var statement to override variables
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}
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src+=key+"="+toSrc(value,9999)+";";
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}
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}
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}
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returnsrc;
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}
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returnwalkObj(obj,0);
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}
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module.exports=getMonkeyPatchSrc;

‎lib/index.js

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"use strict";// run code in ES5 strict mode
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vartrick=require("./trick.js");
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module.exports=function(request,mocks,injections,leaks,cache){
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deleterequire.cache[__filename];// deleting self from module cache so the parent module is always up to date
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if(cache===undefined){
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cache=true;
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}
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returntrick(module.parent,request,mocks,injections,leaks,cache);
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};

‎lib/trick.js

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"use strict";// run code in ES5 strict mode
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varModule=require("module"),
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nodeWrapper0=Module.wrapper[0],// caching original wrapper
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nodeWrapper1=Module.wrapper[1],
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getLeakingSrc=require("./getLeakingSrc.js"),
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getMonkeyPatchSrc=require("./getMonkeyPatchSrc.js");
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functionrestoreOriginalWrappers(){
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Module.wrapper[0]=nodeWrapper0;
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Module.wrapper[1]=nodeWrapper1;
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}
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functiontrick(parentModule,filename,mocks,injections,leaks,cache){
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vartestModule,
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nodeRequire;
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functionrequireTrick(path){
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restoreOriginalWrappers();// we need to restore the wrappers now so we don't influence other modules
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if(mocks&&mocks.hasOwnProperty(path)){
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returnmocks[path];
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}else{
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returnnodeRequire.call(testModule,path);// node's require only works when "this" points to the module
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}
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}
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// Checking params
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if(typeoffilename!=="string"){
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thrownewTypeError("Filename must be a string");
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}
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// Init vars
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filename=Module._resolveFilename(filename,parentModule);// resolve full filename relative to the parent module
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testModule=newModule(filename,parentModule);
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nodeRequire=testModule.require;// caching original node require
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// Prepare module for injection
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if(typeofinjections==="object"){
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Module.wrapper[0]=nodeWrapper0+getMonkeyPatchSrc(injections);
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}elseif(typeofinjections==="string"){
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Module.wrapper[0]=nodeWrapper0+injections;
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}
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// Prepare module for leaking private vars
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if(Array.isArray(leaks)){
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Module.wrapper[1]=getLeakingSrc(leaks)+nodeWrapper1;
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}
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// Mocking module.require-function
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testModule.require=requireTrick;
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// Loading module
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testModule.load(testModule.id);
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if(cache){
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require.cache[filename]=testModule;
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}
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restoreOriginalWrappers();// this is only necessary if nothing has been required within the module
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returntestModule.exports;
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}
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module.exports=trick;

‎package.json

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{
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"name" :"trick",
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"version" :"0.1.0",
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"description" :"Dependency injection for node.js applications",
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"keywords" : [
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"dependency",
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"injection",
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"mock",
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"unit",
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"test"
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],
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"author" : {
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"name" :"Johannes Ewald",
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"email" :"mail@johannesewald.de",
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"web" :"http://johannesewald.de"
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},
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"main" :"lib/index.js",
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"bugs" : {
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"email" :"mail@johannesewald.de",
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"url" :"https://github.com/jhnns/trick/issues"
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},
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"licenses" : {
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"type" :"MIT",
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"url" :"http: //www.opensource.org/licenses/mit-license.php"
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},
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"repositories" : {
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"type" :"git",
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"url" :"https://github.com/jhnns/trick"
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},
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"engines" : {
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"node" :"0.6.x"
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},
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"dependencies": {
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"toSrc":"0.1.x"
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},
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"devDependencies": {
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"mocha":"1.1.x",
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"expect.js":"0.1.x"
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},
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"scripts" : {
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"test" :"make test"
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}
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}

‎test/getLeakingSrc.test.js

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"use strict";// run code in ES5 strict mode
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varexpect=require("expect.js"),
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getLeakingWrapper=require("../lib/getLeakingSrc.js");
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describe("#getLeakingWrapper",function(){
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it("should return 'exports.__ = {};'",function(){
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expect(getLeakingWrapper([])).to.be("exports.__ = {};");
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});
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it("should return 'exports.__ = {somethingPrivate:somethingPrivate,somethingSecret:somethingSecret};'",function(){
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varleakArr=["somethingPrivate","somethingSecret"];
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expect(getLeakingWrapper(leakArr))
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.to.be("exports.__ = {somethingPrivate:somethingPrivate,somethingSecret:somethingSecret};");
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});
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});

‎test/getMonkeyPatchSrc.test.js

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"use strict";// run code in ES5 strict mode
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varexpect=require("expect.js"),
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getMonkeyPatchSrc=require("../lib/getMonkeyPatchSrc.js");
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describe("#getMonkeyPatchSrc",function(){
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it("should return ''",function(){
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varexpectedSrc="",
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subject={};
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expect(getMonkeyPatchSrc(subject)).to.be(expectedSrc);
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});
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it("should return 'process.argv=[\"myArg1\", \"myArg2\"];var console=456;'",function(){
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varexpectedSrc="process.argv=[\"myArg1\", \"myArg2\"];var console=456;",
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subject={
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process:{
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argv:["myArg1","myArg2"]
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},
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console:456
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};
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expect(getMonkeyPatchSrc(subject)).to.be(expectedSrc);
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});
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it("should return 'level1.level2.level3.level4.level5=true;",function(){
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varexpectedSrc="level1.level2.level3.level4.level5=true;",
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subject={level1:{level2:{level3:{level4:{level5:true}}}}};
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expect(getMonkeyPatchSrc(subject)).to.be(expectedSrc);
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});
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});

‎test/testModules/A/moduleA.js

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"use strict";// run code in ES5 strict mode
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varpath=require("path"),
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// different ways to require a module
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fs=require("fs"),// native module
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c=require("../C/moduleC.js"),// relative path
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b=require(path.resolve(__dirname,"../B/moduleB.js")),// absolute path
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toSrc=require("toSrc"),// node_modules path
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index=require("../");// index.js path
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varmyPrivateVar="Hello I'm very private";
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// expose all required modules to test for mocks
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exports.fs=fs;
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exports.b=b;
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exports.c=c;
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exports.toSrc=toSrc;
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exports.index=index;
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exports.process=process;
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exports.console=console;

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