Create layout

.gitignore

+node_modules/

Gruntfile.js

+/*
+ * Gruntfile.js
+ * Copyright (C) 2015 missingdays <missingdays@missingdays>
+ *
+ * Distributed under terms of the MIT license.
+ */
+
+module.exports = function(grunt){
+   
+
+    grunt.initConfig({
+        nodeunit: {
+           all: ['test/*_test.js']
+        }
+    });
+    grunt.loadNpmTasks('grunt-contrib-nodeunit');
+
+    grunt.registerTask('default', ['nodeunit']);
+    grunt.registerTask('test', ['nodeunit']);
+}

package.json

+{
+  "name": "my_factorial",
+  "version": "1.0.0",
+  "description": "Calculate factorial",
+  "main": "main.js",
+  "scripts": {
+    "test": "grunt test"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git@gitlab.eterfund.ru:missingdays/factorial.git"
+  },
+  "keywords": [
+    "math",
+    "factorial"
+  ],
+  "author": "Evgeny Bovykin",
+  "license": "ISC",
+  "devDependencies": {
+    "grunt": "^0.4.5",
+    "grunt-contrib-nodeunit": "^0.4.1"
+  }
+}

src/my_factorial.js

+/*
+ * main.js
+ * Copyright (C) 2015 missingdays <missingdays@missingdays>
+ *
+ * Distributed under terms of the MIT license.
+ */
+
+function factorial() {
+    return 1;
+}
+
+module.exports = factorial;

test/main_test.js

+/*
+ * main_test.js
+ * Copyright (C) 2015 missingdays <missingdays@missingdays>
+ *
+ * Distributed under terms of the MIT license.
+ */
+
+var my_factorial = require('../src/my_factorial');
+
+exports.testCalculatesCorrectly = function(test){
+
+    test.equal(1, my_factorial(0));
+
+    test.done();
+
+}