diff --git a/services/web/app/src/infrastructure/Mongoose.js b/services/web/app/src/infrastructure/Mongoose.js
index 4f49ad6576..123538999b 100644
--- a/services/web/app/src/infrastructure/Mongoose.js
+++ b/services/web/app/src/infrastructure/Mongoose.js
@@ -4,6 +4,15 @@ const logger = require('logger-sharelatex')
 
 const POOL_SIZE = Settings.mongo.poolSize
 
+if (
+  typeof global.beforeEach === 'function' &&
+  process.argv.join(' ').match(/unit/)
+) {
+  throw new Error(
+    'It looks like unit tests are running, but you are connecting to Mongo. Missing a stub?'
+  )
+}
+
 mongoose.connect(
   Settings.mongo.url,
   {
diff --git a/services/web/app/src/infrastructure/RedisWrapper.js b/services/web/app/src/infrastructure/RedisWrapper.js
index 07b288e06b..cb41e6ff3b 100644
--- a/services/web/app/src/infrastructure/RedisWrapper.js
+++ b/services/web/app/src/infrastructure/RedisWrapper.js
@@ -1,23 +1,24 @@
-/* eslint-disable
-    max-len,
-    no-unused-vars,
-*/
-// TODO: This file was created by bulk-decaffeinate.
-// Fix any style issues and re-enable lint.
-let Redis
 const Settings = require('settings-sharelatex')
 const redis = require('redis-sharelatex')
 
+if (
+  typeof global.beforeEach === 'function' &&
+  process.argv.join(' ').match(/unit/)
+) {
+  throw new Error(
+    'It looks like unit tests are running, but you are connecting to Redis. Missing a stub?'
+  )
+}
+
 // A per-feature interface to Redis,
 // looks up the feature in `settings.redis`
 // and returns an appropriate client.
 // Necessary because we don't want to migrate web over
 // to redis-cluster all at once.
-module.exports = Redis = {
+module.exports = {
   // feature = 'websessions' | 'ratelimiter' | ...
   client(feature) {
     const redisFeatureSettings = Settings.redis[feature] || Settings.redis.web
-    const rclient = redis.createClient(redisFeatureSettings)
-    return rclient
+    return redis.createClient(redisFeatureSettings)
   }
 }
diff --git a/services/web/app/src/models/Project.js b/services/web/app/src/models/Project.js
index ccc4e08337..2d290567ba 100644
--- a/services/web/app/src/models/Project.js
+++ b/services/web/app/src/models/Project.js
@@ -1,6 +1,6 @@
 const mongoose = require('../infrastructure/Mongoose')
 const _ = require('underscore')
-const { FolderSchema } = require('./Folder.js')
+const { FolderSchema } = require('./Folder')
 const Errors = require('../Features/Errors/Errors')
 
 const concreteObjectId = mongoose.Types.ObjectId
diff --git a/services/web/test/unit/src/Security/RateLimiterMiddlewareTests.js b/services/web/test/unit/src/Security/RateLimiterMiddlewareTests.js
index 57c369a8e4..81b76b50a7 100644
--- a/services/web/test/unit/src/Security/RateLimiterMiddlewareTests.js
+++ b/services/web/test/unit/src/Security/RateLimiterMiddlewareTests.js
@@ -40,6 +40,7 @@ describe('RateLimiterMiddleware', function() {
         'settings-sharelatex': (this.settings = {}),
         '../../infrastructure/RateLimiter': (this.RateLimiter = {}),
         'logger-sharelatex': (this.logger = { warn: sinon.stub() }),
+        './LoginRateLimiter': {},
         '../Authentication/AuthenticationController': this
           .AuthenticationController
       }
diff --git a/services/web/test/unit/src/helpers/models/Doc.js b/services/web/test/unit/src/helpers/models/Doc.js
new file mode 100644
index 0000000000..ac7bed3683
--- /dev/null
+++ b/services/web/test/unit/src/helpers/models/Doc.js
@@ -0,0 +1,3 @@
+const mockModel = require('../MockModel')
+
+module.exports = mockModel('Doc')
diff --git a/services/web/test/unit/src/helpers/models/File.js b/services/web/test/unit/src/helpers/models/File.js
new file mode 100644
index 0000000000..3c57aa363e
--- /dev/null
+++ b/services/web/test/unit/src/helpers/models/File.js
@@ -0,0 +1,3 @@
+const mockModel = require('../MockModel')
+
+module.exports = mockModel('File')
diff --git a/services/web/test/unit/src/helpers/models/Folder.js b/services/web/test/unit/src/helpers/models/Folder.js
new file mode 100644
index 0000000000..e6e40007df
--- /dev/null
+++ b/services/web/test/unit/src/helpers/models/Folder.js
@@ -0,0 +1,6 @@
+const mockModel = require('../MockModel')
+
+module.exports = mockModel('Folder', {
+  './Doc': require('./Doc'),
+  './File': require('./File')
+})
diff --git a/services/web/test/unit/src/helpers/models/Project.js b/services/web/test/unit/src/helpers/models/Project.js
index 34b080b4fc..e12f163331 100644
--- a/services/web/test/unit/src/helpers/models/Project.js
+++ b/services/web/test/unit/src/helpers/models/Project.js
@@ -1,3 +1,5 @@
 const mockModel = require('../MockModel')
 
-module.exports = mockModel('Project')
+module.exports = mockModel('Project', {
+  './Folder': require('./Folder')
+})
diff --git a/services/web/test/unit/src/infrastructure/RedisWrapperTests.js b/services/web/test/unit/src/infrastructure/RedisWrapperTests.js
deleted file mode 100644
index 2245a9bc47..0000000000
--- a/services/web/test/unit/src/infrastructure/RedisWrapperTests.js
+++ /dev/null
@@ -1,65 +0,0 @@
-/* eslint-disable
-    max-len,
-    no-return-assign,
-    no-unused-vars,
-*/
-// TODO: This file was created by bulk-decaffeinate.
-// Fix any style issues and re-enable lint.
-/*
- * decaffeinate suggestions:
- * DS102: Remove unnecessary code created because of implicit returns
- * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
- */
-const { assert } = require('chai')
-const sinon = require('sinon')
-const chai = require('chai')
-const should = chai.should()
-const { expect } = chai
-const modulePath = '../../../../app/src/infrastructure/RedisWrapper.js'
-const SandboxedModule = require('sandboxed-module')
-
-describe('RedisWrapper', function() {
-  beforeEach(function() {
-    this.settings = { redis: {} }
-    this.redis = { createClient: sinon.stub() }
-    return (this.RedisWrapper = SandboxedModule.require(modulePath, {
-      globals: {
-        console: console
-      },
-      requires: {
-        'settings-sharelatex': this.settings,
-        'redis-sharelatex': this.redis
-      }
-    }))
-  })
-
-  describe('client', function() {
-    it('should use the feature settings if present', function() {
-      this.settings.redis = {
-        my_feature: {
-          port: '23456',
-          host: 'otherhost',
-          password: 'banana'
-        }
-      }
-      this.RedisWrapper.client('my_feature')
-      return this.redis.createClient
-        .calledWith(this.settings.redis.my_feature)
-        .should.equal(true)
-    })
-
-    it('should use the web settings if feature not present', function() {
-      this.settings.redis = {
-        web: {
-          port: '43',
-          host: 'otherhost',
-          password: 'banana'
-        }
-      }
-      this.RedisWrapper.client('my_feature')
-      return this.redis.createClient
-        .calledWith(this.settings.redis.web)
-        .should.equal(true)
-    })
-  })
-})