Use DatabaseCleaner

Gemfile

@@ -82,6 +82,8 @@ group :development do
 end
 
 group :test do
+  gem 'database_cleaner', '~> 1.7'
+
   # Code coverage for Ruby 1.9+ with a powerful configuration library
   # and automatic merging of coverage across test suites.
   gem 'simplecov', '~> 0.16', require: false

Gemfile.lock

@@ -52,6 +52,7 @@ GEM
     coderay (1.1.2)
     concurrent-ruby (1.1.3)
     crass (1.0.4)
+    database_cleaner (1.7.0)
     diff-lcs (1.3)
     docile (1.3.1)
     erubi (1.7.1)
@@ -214,6 +215,7 @@ PLATFORMS
 DEPENDENCIES
   bootsnap (>= 1.1.0)
   byebug
+  database_cleaner (~> 1.7)
   factory_bot_rails (~> 4.10)
   faker (~> 1.8)
   listen (>= 3.0.5, < 3.2)

spec/support/database_cleaner.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+RSpec.configure do |config|
+  config.before :suite do
+    DatabaseCleaner.strategy = :transaction
+    DatabaseCleaner.clean_with :truncation
+  end
+
+  config.around do |example|
+    DatabaseCleaner.cleaning do
+      example.run
+    end
+  end
+end