diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index fb1e6e7e70714..4d5769d173d9a 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -5,8 +5,6 @@
 require 'models/topic'
 require 'models/reply'
 require 'models/computer'
-require 'models/customer'
-require 'models/order'
 require 'models/post'
 require 'models/author'
 require 'models/tag'
diff --git a/activerecord/test/cases/associations/callbacks_test.rb b/activerecord/test/cases/associations/callbacks_test.rb
index 91b1af125e4bf..15537d6940e54 100644
--- a/activerecord/test/cases/associations/callbacks_test.rb
+++ b/activerecord/test/cases/associations/callbacks_test.rb
@@ -1,8 +1,6 @@
 require "cases/helper"
 require 'models/post'
-require 'models/comment'
 require 'models/author'
-require 'models/category'
 require 'models/project'
 require 'models/developer'
 
diff --git a/activerecord/test/cases/associations/cascaded_eager_loading_test.rb b/activerecord/test/cases/associations/cascaded_eager_loading_test.rb
index f5d59c9a433f8..b93e49613dda8 100644
--- a/activerecord/test/cases/associations/cascaded_eager_loading_test.rb
+++ b/activerecord/test/cases/associations/cascaded_eager_loading_test.rb
@@ -2,7 +2,6 @@
 require 'models/post'
 require 'models/comment'
 require 'models/author'
-require 'models/category'
 require 'models/categorization'
 require 'models/company'
 require 'models/topic'
diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
index d7e9ca0bcbb70..6b4a1d940899b 100644
--- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -2,20 +2,14 @@
 require 'models/developer'
 require 'models/project'
 require 'models/company'
-require 'models/topic'
-require 'models/reply'
-require 'models/computer'
 require 'models/customer'
 require 'models/order'
 require 'models/categorization'
 require 'models/category'
 require 'models/post'
 require 'models/author'
-require 'models/comment'
 require 'models/tag'
 require 'models/tagging'
-require 'models/person'
-require 'models/reader'
 require 'models/parrot'
 require 'models/pirate'
 require 'models/treasure'
diff --git a/activerecord/test/cases/associations_test.rb b/activerecord/test/cases/associations_test.rb
index ff9e9a472aede..a1c794c084ce8 100644
--- a/activerecord/test/cases/associations_test.rb
+++ b/activerecord/test/cases/associations_test.rb
@@ -2,11 +2,6 @@
 require 'models/developer'
 require 'models/project'
 require 'models/company'
-require 'models/topic'
-require 'models/reply'
-require 'models/computer'
-require 'models/customer'
-require 'models/order'
 require 'models/categorization'
 require 'models/category'
 require 'models/post'
@@ -19,12 +14,6 @@
 require 'models/parrot'
 require 'models/ship_part'
 require 'models/ship'
-require 'models/treasure'
-require 'models/price_estimate'
-require 'models/club'
-require 'models/member'
-require 'models/membership'
-require 'models/sponsor'
 
 class AssociationsTest < ActiveRecord::TestCase
   fixtures :accounts, :companies, :developers, :projects, :developers_projects,
diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb
index 860d330a7feec..a107c1a4745c2 100644
--- a/activerecord/test/cases/finder_test.rb
+++ b/activerecord/test/cases/finder_test.rb
@@ -10,7 +10,6 @@
 require 'models/project'
 require 'models/developer'
 require 'models/customer'
-require 'models/job'
 
 class DynamicFinderMatchTest < ActiveRecord::TestCase
   def test_find_no_match
diff --git a/activerecord/test/cases/method_scoping_test.rb b/activerecord/test/cases/method_scoping_test.rb
index 4e8ce1dac103c..774b50e2e47a6 100644
--- a/activerecord/test/cases/method_scoping_test.rb
+++ b/activerecord/test/cases/method_scoping_test.rb
@@ -8,7 +8,6 @@
 require 'models/developer'
 require 'models/project'
 require 'models/comment'
-require 'models/category'
 
 class MethodScopingTest < ActiveRecord::TestCase
   fixtures :authors, :developers, :projects, :comments, :posts, :developers_projects
@@ -543,4 +542,4 @@ def test_nested_scoped_find_merges_new_and_old_style_joins
     assert_equal 1, scoped_authors.size
     assert_equal authors(:david).attributes, scoped_authors.first.attributes
   end
-end
\ No newline at end of file
+end
diff --git a/activerecord/test/cases/persistence_test.rb b/activerecord/test/cases/persistence_test.rb
index 54fe991648cef..1cc3a337c3784 100644
--- a/activerecord/test/cases/persistence_test.rb
+++ b/activerecord/test/cases/persistence_test.rb
@@ -5,15 +5,8 @@
 require 'models/reply'
 require 'models/category'
 require 'models/company'
-require 'models/customer'
 require 'models/developer'
 require 'models/project'
-require 'models/default'
-require 'models/auto_id'
-require 'models/column_name'
-require 'models/subscriber'
-require 'models/keyboard'
-require 'models/comment'
 require 'models/minimalistic'
 require 'models/warehouse_thing'
 require 'models/parrot'
diff --git a/activerecord/test/cases/query_cache_test.rb b/activerecord/test/cases/query_cache_test.rb
index 68abca70b3ae5..f0d97a00d0514 100644
--- a/activerecord/test/cases/query_cache_test.rb
+++ b/activerecord/test/cases/query_cache_test.rb
@@ -1,8 +1,6 @@
 require "cases/helper"
 require 'models/topic'
-require 'models/reply'
 require 'models/task'
-require 'models/course'
 require 'models/category'
 require 'models/post'
 
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb
index ffde8daa071b6..cb252d56fe433 100644
--- a/activerecord/test/cases/relations_test.rb
+++ b/activerecord/test/cases/relations_test.rb
@@ -1,5 +1,4 @@
 require "cases/helper"
-require 'models/tag'
 require 'models/tagging'
 require 'models/post'
 require 'models/topic'
diff --git a/activerecord/test/cases/transaction_callbacks_test.rb b/activerecord/test/cases/transaction_callbacks_test.rb
index df123c9de8a9b..ffc2cd638f038 100644
--- a/activerecord/test/cases/transaction_callbacks_test.rb
+++ b/activerecord/test/cases/transaction_callbacks_test.rb
@@ -1,6 +1,5 @@
 require "cases/helper"
 require 'models/topic'
-require 'models/reply'
 
 class TransactionCallbacksTest < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
diff --git a/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb b/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
index 454e42ed37cde..628029f8df61c 100644
--- a/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
+++ b/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
@@ -1,6 +1,5 @@
 require "cases/helper"
 require 'models/topic'
-require 'models/reply'
 
 class I18nGenerateMessageValidationTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/validations_test.rb b/activerecord/test/cases/validations_test.rb
index 3f1b0e333fbc8..fd771ef4be7a4 100644
--- a/activerecord/test/cases/validations_test.rb
+++ b/activerecord/test/cases/validations_test.rb
@@ -4,11 +4,6 @@
 require 'models/reply'
 require 'models/person'
 require 'models/developer'
-require 'models/warehouse_thing'
-require 'models/guid'
-require 'models/owner'
-require 'models/pet'
-require 'models/event'
 require 'models/parrot'
 require 'models/company'
 
diff --git a/activerecord/test/cases/xml_serialization_test.rb b/activerecord/test/cases/xml_serialization_test.rb
index 751946ffc54e7..b11b340e94cc3 100644
--- a/activerecord/test/cases/xml_serialization_test.rb
+++ b/activerecord/test/cases/xml_serialization_test.rb
@@ -2,7 +2,6 @@
 require 'models/contact'
 require 'models/post'
 require 'models/author'
-require 'models/tagging'
 require 'models/comment'
 require 'models/company_in_module'