diff --git a/lib/attr_encrypted/adapters/active_record.rb b/lib/attr_encrypted/adapters/active_record.rb
index 5117d0cb..935aff71 100644
--- a/lib/attr_encrypted/adapters/active_record.rb
+++ b/lib/attr_encrypted/adapters/active_record.rb
@@ -1,3 +1,4 @@
+require 'byebug'
 if defined?(ActiveRecord::Base)
   module AttrEncrypted
     module Adapters
@@ -51,10 +52,10 @@ def attr_encrypted(*attrs)
             super
             options = attrs.extract_options!
             attr = attrs.pop
-            # if ::ActiveRecord::VERSION::STRING >= "5.1.0"
-            #   column_type = columns_hash[attr.to_s].type unless columns_hash[attr.to_s].nil?
-            #   column_type.nil? ? attribute(attr) : attribute(attr, column_type)
-            # end
+            if ::ActiveRecord::VERSION::STRING >= "5.1.0"
+              column_type = columns_hash[attr.to_s].type unless columns_hash[attr.to_s].nil?
+              column_type.nil? ? attribute(attr) : attribute(attr, column_type)
+            end
             options.merge! encrypted_attributes[attr]
 
             define_method("#{attr}_was") do
diff --git a/test/active_record_test.rb b/test/active_record_test.rb
index 89134548..08b71dfd 100644
--- a/test/active_record_test.rb
+++ b/test/active_record_test.rb
@@ -1,6 +1,6 @@
 require_relative 'test_helper'
 
-ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
+ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: 'test.db')
 
 def create_tables
   ActiveRecord::Schema.define(version: 1) do
@@ -41,6 +41,17 @@ def create_tables
   end
 end
 
+def drop_tables
+  ActiveRecord::Schema.define(version: 1) do
+    self.verbose = false
+    drop_table :people, if_exists: true
+    drop_table :accounts, if_exists: true
+    drop_table :users, if_exists: true
+    drop_table :prime_ministers, if_exists: true
+    drop_table :addresses, if_exists: true
+  end
+end
+
 ActiveRecord::MissingAttributeError = ActiveModel::MissingAttributeError unless defined?(ActiveRecord::MissingAttributeError)
 
 if ::ActiveRecord::VERSION::STRING > "4.0"
@@ -53,7 +64,12 @@ class UploadedFile; end
   require 'action_controller/metal/strong_parameters'
 end
 
-class Person < ActiveRecord::Base
+class ActiveRecordTest < Minitest::Test
+
+  drop_tables
+  create_tables
+
+  class Person < ActiveRecord::Base
   self.attr_encrypted_options[:mode] = :per_attribute_iv_and_salt
   attr_encrypted :email, key: SECRET_KEY
   attr_encrypted :credentials, key: Proc.new { |user| Encryptor.encrypt(value: user.salt, key: SECRET_KEY, iv: user.key_iv) }, marshal: true
@@ -67,67 +83,60 @@ def initialize_salt_and_credentials
     self.salt ||= Digest::SHA256.hexdigest((Time.now.to_i * rand(1000)).to_s)[0..15]
     self.credentials ||= { username: 'example', password: 'test' }
   end
-end
+  end
 
-class PersonWithValidation < Person
-  validates_presence_of :email
-end
+  class PersonWithValidation < Person
+    validates_presence_of :email
+  end
 
-class PersonWithProcMode < Person
-  attr_encrypted :email,       key: SECRET_KEY, mode: Proc.new { :per_attribute_iv_and_salt }
-  attr_encrypted :credentials, key: SECRET_KEY, mode: Proc.new { :single_iv_and_salt }, insecure_mode: true
-end
+  class PersonWithProcMode < Person
+    attr_encrypted :email,       key: SECRET_KEY, mode: Proc.new { :per_attribute_iv_and_salt }
+    attr_encrypted :credentials, key: SECRET_KEY, mode: Proc.new { :single_iv_and_salt }, insecure_mode: true
+  end
 
-class Account < ActiveRecord::Base
-  ACCOUNT_ENCRYPTION_KEY = SecureRandom.urlsafe_base64(24)
-  attr_encrypted :password, key: :password_encryption_key
+  class Account < ActiveRecord::Base
+    ACCOUNT_ENCRYPTION_KEY = SecureRandom.urlsafe_base64(24)
+    attr_encrypted :password, key: :password_encryption_key
 
-  def encrypting?(attr)
-    encrypted_attributes[attr][:operation] == :encrypting
-  end
+    def encrypting?(attr)
+      encrypted_attributes[attr][:operation] == :encrypting
+    end
 
-  def password_encryption_key
-    if encrypting?(:password)
-      self.key = ACCOUNT_ENCRYPTION_KEY
-    else
-      self.key
+    def password_encryption_key
+      if encrypting?(:password)
+        self.key = ACCOUNT_ENCRYPTION_KEY
+      else
+        self.key
+      end
     end
   end
-end
-
-class PersonWithSerialization < ActiveRecord::Base
-  self.table_name = 'people'
-  attr_encrypted :email, key: SECRET_KEY
-  serialize :password
-end
-
-class UserWithProtectedAttribute < ActiveRecord::Base
-  self.table_name = 'users'
-  attr_encrypted :password, key: SECRET_KEY
-  attr_protected :is_admin if ::ActiveRecord::VERSION::STRING < "4.0"
-end
 
-class PersonUsingAlias < ActiveRecord::Base
-  self.table_name = 'people'
-  attr_encryptor :email, key: SECRET_KEY
-end
+  class PersonWithSerialization < ActiveRecord::Base
+    self.table_name = 'people'
+    attr_encrypted :email, key: SECRET_KEY
+    serialize :password
+  end
 
-class PrimeMinister < ActiveRecord::Base
-  attr_encrypted :name, marshal: true, key: SECRET_KEY
-end
+  class UserWithProtectedAttribute < ActiveRecord::Base
+    self.table_name = 'users'
+    attr_encrypted :password, key: SECRET_KEY
+    attr_protected :is_admin if ::ActiveRecord::VERSION::STRING < "4.0"
+  end
 
-class Address < ActiveRecord::Base
-  self.attr_encrypted_options[:marshal] = false
-  self.attr_encrypted_options[:encode] = false
-  attr_encrypted :street, encode_iv: false, key: SECRET_KEY
-  attr_encrypted :zipcode, key: SECRET_KEY, mode: Proc.new { |address| address.mode.to_sym }, insecure_mode: true
-end
+  class PersonUsingAlias < ActiveRecord::Base
+    self.table_name = 'people'
+    attr_encryptor :email, key: SECRET_KEY
+  end
 
-class ActiveRecordTest < Minitest::Test
+  class PrimeMinister < ActiveRecord::Base
+    attr_encrypted :name, marshal: true, key: SECRET_KEY
+  end
 
-  def setup
-    drop_all_tables
-    create_tables
+  class Address < ActiveRecord::Base
+    self.attr_encrypted_options[:marshal] = false
+    self.attr_encrypted_options[:encode] = false
+    attr_encrypted :street, encode_iv: false, key: SECRET_KEY
+    attr_encrypted :zipcode, key: SECRET_KEY, mode: Proc.new { |address| address.mode.to_sym }, insecure_mode: true
   end
 
   def test_should_encrypt_email
@@ -162,6 +171,7 @@ def test_should_encrypt_decrypt_with_iv
   end
 
   def test_should_ensure_attributes_can_be_deserialized
+    debugger
     @person = PersonWithSerialization.new(email: 'test@example.com', password: %w(an array of strings))
     @person.save
     assert_equal @person.password, %w(an array of strings)
diff --git a/test/compatibility_test.rb b/test/compatibility_test.rb
index 9440f316..622b3ab0 100644
--- a/test/compatibility_test.rb
+++ b/test/compatibility_test.rb
@@ -1,11 +1,47 @@
 # -*- encoding: utf-8 -*-
 require_relative 'test_helper'
 
+ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => 'test.db'
+
+def create_tables
+  ActiveRecord::Schema.define(:version => 1) do
+    create_table :nonmarshalling_pets do |t|
+      t.string :name
+      t.string :encrypted_nickname
+      t.string :encrypted_nickname_iv
+      t.string :encrypted_nickname_salt
+      t.string :encrypted_birthdate
+      t.string :encrypted_birthdate_iv
+      t.string :encrypted_birthdate_salt
+    end
+    create_table :marshalling_pets do |t|
+      t.string :name
+      t.string :encrypted_nickname
+      t.string :encrypted_nickname_iv
+      t.string :encrypted_nickname_salt
+      t.string :encrypted_birthdate
+      t.string :encrypted_birthdate_iv
+      t.string :encrypted_birthdate_salt
+    end
+  end
+end
+
+def drop_tables
+  ActiveRecord::Schema.define(version: 1) do
+    self.verbose = false
+    drop_table :nonmarshalling_pets, if_exists: true
+    drop_table :marshalling_pets, if_exists: true
+  end
+end
+
 # Test to ensure that existing representations in database do not break on
 # migrating to new versions of this gem. This ensures that future versions of
 # this gem will retain backwards compatibility with data generated by earlier
 # versions.
 class CompatibilityTest < Minitest::Test
+  drop_tables
+  create_tables
+
   class NonmarshallingPet < ActiveRecord::Base
     PET_NICKNAME_SALT = Digest::SHA256.hexdigest('my-really-really-secret-pet-nickname-salt')
     PET_NICKNAME_KEY = 'my-really-really-secret-pet-nickname-key'
@@ -40,11 +76,6 @@ class MarshallingPet < ActiveRecord::Base
       :marshal => true
   end
 
-  def setup
-    drop_all_tables
-    create_tables
-  end
-
   def test_nonmarshalling_backwards_compatibility
     pet = NonmarshallingPet.create!(
       :name => 'Fido',
@@ -78,30 +109,4 @@ def test_marshalling_backwards_compatibility
     assert_equal Date.new(2011, 7, 9), pet.birthdate
   end
 
-  private
-
-  def create_tables
-    ActiveRecord::Schema.define(:version => 1) do
-      create_table :nonmarshalling_pets do |t|
-        t.string :name
-        t.string :encrypted_nickname
-        t.string :encrypted_nickname_iv
-        t.string :encrypted_nickname_salt
-        t.string :encrypted_birthdate
-        t.string :encrypted_birthdate_iv
-        t.string :encrypted_birthdate_salt
-      end
-      create_table :marshalling_pets do |t|
-        t.string :name
-        t.string :encrypted_nickname
-        t.string :encrypted_nickname_iv
-        t.string :encrypted_nickname_salt
-        t.string :encrypted_birthdate
-        t.string :encrypted_birthdate_iv
-        t.string :encrypted_birthdate_salt
-      end
-    end
-  end
 end
-
-ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => ':memory:'
diff --git a/test/legacy_active_record_test.rb b/test/legacy_active_record_test.rb
index 0c85fc22..7308f451 100644
--- a/test/legacy_active_record_test.rb
+++ b/test/legacy_active_record_test.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
 require_relative 'test_helper'
 
-ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => ':memory:'
+ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => 'test.db'
 
 def create_people_table
   ActiveRecord::Schema.define(:version => 1) do
@@ -14,7 +14,14 @@ def create_people_table
   end
 end
 
+def drop_tables
+  ActiveRecord::Schema.define(:version => 1) do
+    drop_table :legacy_people, if_exists: true
+  end
+end
+
 # The table needs to exist before defining the class
+drop_tables
 create_people_table
 
 ActiveRecord::MissingAttributeError = ActiveModel::MissingAttributeError unless defined?(ActiveRecord::MissingAttributeError)
@@ -49,11 +56,6 @@ class LegacyPersonWithValidation < LegacyPerson
 
 class LegacyActiveRecordTest < Minitest::Test
 
-  def setup
-    drop_all_tables
-    create_people_table
-  end
-
   def test_should_decrypt_with_correct_encoding
     if defined?(Encoding)
       @person = LegacyPerson.create :email => 'test@example.com'
diff --git a/test/legacy_compatibility_test.rb b/test/legacy_compatibility_test.rb
index 32e51350..e1b1027e 100644
--- a/test/legacy_compatibility_test.rb
+++ b/test/legacy_compatibility_test.rb
@@ -1,6 +1,35 @@
 # -*- encoding: utf-8 -*-
 require_relative 'test_helper'
 
+ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => 'test.db'
+
+def create_tables
+  ActiveRecord::Schema.define(:version => 1) do
+    create_table :legacy_nonmarshalling_pets do |t|
+      t.string :name
+      t.string :encrypted_nickname
+      t.string :encrypted_birthdate
+      t.string :salt
+    end
+    create_table :legacy_marshalling_pets do |t|
+      t.string :name
+      t.string :encrypted_nickname
+      t.string :encrypted_birthdate
+      t.string :salt
+    end
+  end
+end
+
+def drop_tables
+  ActiveRecord::Schema.define(version: 1) do
+    drop_table :legacy_nonmarshalling_pets, if_exists: true
+    drop_table :legacy_marshalling_pets, if_exists: true
+  end
+end
+
+drop_tables
+create_tables
+
 # Test to ensure that existing representations in database do not break on
 # migrating to new versions of this gem. This ensures that future versions of
 # this gem will retain backwards compatibility with data generated by earlier
@@ -40,11 +69,6 @@ class LegacyMarshallingPet < ActiveRecord::Base
                    :marshal => true
   end
 
-  def setup
-    drop_all_tables
-    create_tables
-  end
-
   def test_nonmarshalling_backwards_compatibility
     pet = LegacyNonmarshallingPet.create!(
       :name => 'Fido',
@@ -70,24 +94,5 @@ def test_marshalling_backwards_compatibility
     assert_equal Date.new(2011, 7, 9), pet.birthdate
   end
 
-  private
-
-  def create_tables
-    ActiveRecord::Schema.define(:version => 1) do
-      create_table :legacy_nonmarshalling_pets do |t|
-        t.string :name
-        t.string :encrypted_nickname
-        t.string :encrypted_birthdate
-        t.string :salt
-      end
-      create_table :legacy_marshalling_pets do |t|
-        t.string :name
-        t.string :encrypted_nickname
-        t.string :encrypted_birthdate
-        t.string :salt
-      end
-    end
-  end
 end
 
-ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => ':memory:'