From 27d8eb5e70351d17a5ff2c824bb71a4c1a88ee42 Mon Sep 17 00:00:00 2001
From: kirrg001 <katharina.irrgang@googlemail.com>
Date: Fri, 10 Jun 2016 07:20:13 +0200
Subject: [PATCH] improvement: add mocks helper module for test env

no issue
- add methods to mock/unmock not existent files
---
 core/test/utils/index.js       |  3 +++
 core/test/utils/mocks/index.js |  1 +
 core/test/utils/mocks/utils.js | 20 ++++++++++++++++++++
 3 files changed, 24 insertions(+)
 create mode 100644 core/test/utils/mocks/index.js
 create mode 100644 core/test/utils/mocks/utils.js

diff --git a/core/test/utils/index.js b/core/test/utils/index.js
index afa3d2c0a0..06b491d781 100644
--- a/core/test/utils/index.js
+++ b/core/test/utils/index.js
@@ -14,6 +14,7 @@ var Promise       = require('bluebird'),
     filterData    = require('./fixtures/filter-param'),
     API           = require('./api'),
     fork          = require('./fork'),
+    mocks         = require('./mocks'),
     config        = require('../../server/config'),
 
     fixtures,
@@ -596,6 +597,8 @@ module.exports = {
     initData: initData,
     clearData: clearData,
 
+    mocks: mocks,
+
     fixtures: fixtures,
 
     DataGenerator: DataGenerator,
diff --git a/core/test/utils/mocks/index.js b/core/test/utils/mocks/index.js
new file mode 100644
index 0000000000..263a39b459
--- /dev/null
+++ b/core/test/utils/mocks/index.js
@@ -0,0 +1 @@
+exports.utils = require('./utils');
diff --git a/core/test/utils/mocks/utils.js b/core/test/utils/mocks/utils.js
new file mode 100644
index 0000000000..26e6eb14e7
--- /dev/null
+++ b/core/test/utils/mocks/utils.js
@@ -0,0 +1,20 @@
+var Module = require('module'),
+    originalRequireFn = Module.prototype.require;
+
+/**
+ * helper fn to mock non existent modules
+ * mocks.utils.mockNotExistingModule(/pattern/, mockedModule)
+ */
+exports.mockNotExistingModule = function mockNotExistingModule(modulePath, module) {
+    Module.prototype.require = function (path) {
+        if (path.match(modulePath)) {
+            return module;
+        }
+
+        return originalRequireFn.apply(this, arguments);
+    };
+};
+
+exports.unmockNotExistingModule = function unmockNotExistingModule() {
+    Module.prototype.require = originalRequireFn;
+};