Clean databases between rspec tests

Gemfile

@@ -48,6 +48,7 @@ group :test do
   gem 'guard'
   gem 'guard-unicorn'
   gem 'simplecov', :require => false
+  gem 'database_cleaner'
 end
 
 gem 'newrelic_rpm'

Gemfile.lock

@@ -63,6 +63,7 @@ GEM
     builder (3.0.4)
     coderay (1.0.7)
     dalli (2.1.0)
+    database_cleaner (1.2.0)
     delayed_job (3.0.3)
       activesupport (~> 3.0)
     diff-lcs (1.1.3)
@@ -166,6 +167,7 @@ DEPENDENCIES
   bson_ext
   bundler
   dalli
+  database_cleaner
   delayed_job
   delayed_job_mongoid!
   faker

spec/api/comment_thread_spec.rb

@@ -450,6 +450,7 @@ describe "app" do
       end
     end
     describe "DELETE /api/v1/threads/:thread_id" do
+      before(:each) { init_without_subscriptions }
       it "delete the comment thread and its comments" do
         thread = CommentThread.first.to_hash
         delete "/api/v1/threads/#{thread['id']}"

spec/api/query_spec.rb

 require 'spec_helper'
 
 describe "app" do
+	let(:author) { create_test_user(1) }
 	describe "thread search" do
 		describe "GET /api/v1/search/threads" do
 			it "returns thread with query match" do
-				user = User.find 1
-				if user.nil?
-					user = create_test_user(1)
-				end
-
 				commentable = Commentable.new("question_1")
 
 				random_string = (0...8).map{ ('a'..'z').to_a[rand(26)] }.join
 
 				thread = CommentThread.new(title: "Test title", body: random_string, course_id: "1", commentable_id: commentable.id)
-				thread.author = user
+				thread.author = author
 				thread.save!
 
 				sleep 3
@@ -31,23 +27,18 @@ describe "app" do
 	describe "comment search" do
 		describe "GET /api/v1/search/threads" do
 			it "returns thread with comment query match" do
-				user = User.find 1
-				if user.nil?
-					user = create_test_user(1)
-				end
-				
 				commentable = Commentable.new("question_1")
 
 				random_string = (0...8).map{ ('a'..'z').to_a[rand(26)] }.join
 
 				thread = CommentThread.new(title: "Test title", body: "elephant otter", course_id: "1", commentable_id: commentable.id)
-				thread.author = user
+				thread.author = author
 				thread.save!
 
 				sleep 3
 
 				comment = Comment.new(body: random_string, course_id: "1", commentable_id: commentable.id)
-				comment.author = user
+				comment.author = author
 				comment.comment_thread = thread
 				comment.save!
 

spec/spec_helper.rb

@@ -7,6 +7,7 @@ require File.join(File.dirname(__FILE__), '..', 'app')
 require 'sinatra'
 require 'rack/test'
 require 'yajl'
+require 'database_cleaner'
 
 # setup test environment
 set :environment, :test
@@ -25,7 +26,14 @@ RSpec.configure do |config|
   config.treat_symbols_as_metadata_keys_with_true_values = true
   config.filter_run focus: true
   config.run_all_when_everything_filtered = true
-  config.before(:each) { Mongoid::IdentityMap.clear }
+  config.before(:each) do
+    Mongoid::IdentityMap.clear
+    DatabaseCleaner.clean
+    [CommentThread, Comment].each do |class_|
+      class_.tire.index.delete
+      class_.create_elasticsearch_index
+    end
+  end
 end
 
 Mongoid.configure do |config|