add option to create new directory

app/index.js

@@ -16,6 +16,42 @@ module.exports = generators.Base.extend({
     this.slugify = slugify;
   },
   prompting: {
+    dir: function () {
+
+      if (this.options.createDirectory !== undefined) {
+        return true;
+      }
+
+      var done = this.async();
+      var prompt = [{
+        type: 'confirm',
+        name: 'createDirectory',
+        message: 'Would you like to create a new directory for your project?'
+      }];
+
+      this.prompt(prompt, function (response) {
+        this.options.createDirectory = response.createDirectory;
+        done();
+      }.bind(this));
+    },
+    dirname: function () {
+
+      if (!this.options.createDirectory || this.options.dirname) {
+        return true;
+      }
+
+      var done = this.async();
+      var prompt = [{
+        type: 'input',
+        name: 'dirname',
+        message: 'Enter directory name'
+      }];
+
+      this.prompt(prompt, function (response) {
+        this.options.dirname = response.dirname;
+        done();
+      }.bind(this));
+    },
     type: function () {
       // Short circuit if an option was explicitly specified
       if (this.options.mvc || this.options.basic) {
@@ -145,6 +181,11 @@ module.exports = generators.Base.extend({
   writing: {
     buildEnv: function () {
 
+      // create directory
+      if(this.options.createDirectory){
+        this.destinationRoot(this.options.dirname);
+      }
+
       var name = this.options.mvc ? 'mvc' : 'basic';
       var suffix = this.options.coffee ? '-coffee' : '';
       this.filetype = 'js';

test/test-creation.js

@@ -58,7 +58,7 @@ var toCoffeeFileArray = function (fileArray) {
   return newArray;
 };
 
-var runGenerationTest = function (extraFiles, type, engine, preprocessor, coffee, database, buildTool, callback) {
+var runGenerationTest = function (extraFiles, type, engine, preprocessor, coffee, database, buildTool, callback, dir, dirname) {
   var expectedFiles;
 
   // Never install dependencies
@@ -71,6 +71,8 @@ var runGenerationTest = function (extraFiles, type, engine, preprocessor, coffee
   this.app.options.cssPreprocessor = preprocessor;
   this.app.options.coffee = coffee;
   this.app.options.buildTool = buildTool;
+  this.app.options.createDirectory = dir || false;
+  this.app.options.dirname = dirname;
 
   // Set up initial file list Basic or MVC
   expectedFiles = extraFiles.concat(appFiles[type]);
@@ -241,6 +243,10 @@ describe('Express generator', function () {
     it('works with coffee and less', function (done) {
       runGenerationTest.call(this, expected, 'basic', 'ejs', 'less', false, 'none', 'grunt', done);
     });
+
+    it('creates a new directory', function (done) {
+      runGenerationTest.call(this, expected, 'basic', 'ejs', 'less', false, 'none', 'grunt', done, true, 'express-project');
+    });
   });
 
   describe('Basic generator with Swig', function () {