From dd779c9686f49f5ed6dda8ad5a1cb3b0788e1dd4 Mon Sep 17 00:00:00 2001
From: Akira Matsuda <ronnie@dio.jp>
Date: Fri, 2 Aug 2019 06:18:19 +0900
Subject: No such class since 8d2866bb80fbe81acb04f5b0c44f152f571fb29f

---
 activemodel/test/cases/attribute_assignment_test.rb      |  2 +-
 activemodel/test/cases/attribute_methods_test.rb         |  2 +-
 activemodel/test/cases/attribute_set_test.rb             |  2 +-
 activemodel/test/cases/attribute_test.rb                 |  2 +-
 activemodel/test/cases/attributes_dirty_test.rb          |  2 +-
 activemodel/test/cases/attributes_test.rb                |  2 +-
 activemodel/test/cases/callbacks_test.rb                 |  2 +-
 activemodel/test/cases/conversion_test.rb                |  2 +-
 activemodel/test/cases/dirty_test.rb                     |  2 +-
 activemodel/test/cases/error_test.rb                     |  2 +-
 activemodel/test/cases/errors_test.rb                    |  2 +-
 activemodel/test/cases/lint_test.rb                      |  2 +-
 activemodel/test/cases/model_test.rb                     |  2 +-
 activemodel/test/cases/naming_test.rb                    | 16 ++++++++--------
 activemodel/test/cases/nested_error_test.rb              |  2 +-
 activemodel/test/cases/railtie_test.rb                   |  2 +-
 activemodel/test/cases/secure_password_test.rb           |  2 +-
 activemodel/test/cases/serialization_test.rb             |  2 +-
 .../test/cases/serializers/json_serialization_test.rb    |  2 +-
 activemodel/test/cases/translation_test.rb               |  2 +-
 activemodel/test/cases/type/big_integer_test.rb          |  2 +-
 activemodel/test/cases/type/binary_test.rb               |  2 +-
 activemodel/test/cases/type/boolean_test.rb              |  2 +-
 activemodel/test/cases/type/date_test.rb                 |  2 +-
 activemodel/test/cases/type/date_time_test.rb            |  2 +-
 activemodel/test/cases/type/decimal_test.rb              |  2 +-
 activemodel/test/cases/type/float_test.rb                |  2 +-
 activemodel/test/cases/type/immutable_string_test.rb     |  2 +-
 activemodel/test/cases/type/integer_test.rb              |  2 +-
 activemodel/test/cases/type/registry_test.rb             |  2 +-
 activemodel/test/cases/type/string_test.rb               |  2 +-
 activemodel/test/cases/type/time_test.rb                 |  2 +-
 activemodel/test/cases/type/value_test.rb                |  2 +-
 .../test/cases/validations/absence_validation_test.rb    |  2 +-
 .../test/cases/validations/acceptance_validation_test.rb |  2 +-
 activemodel/test/cases/validations/callbacks_test.rb     |  2 +-
 .../cases/validations/conditional_validation_test.rb     |  2 +-
 .../cases/validations/confirmation_validation_test.rb    |  2 +-
 .../test/cases/validations/exclusion_validation_test.rb  |  2 +-
 .../test/cases/validations/format_validation_test.rb     |  2 +-
 .../validations/i18n_generate_message_validation_test.rb |  2 +-
 .../test/cases/validations/i18n_validation_test.rb       |  2 +-
 .../test/cases/validations/inclusion_validation_test.rb  |  2 +-
 .../test/cases/validations/length_validation_test.rb     |  2 +-
 .../cases/validations/numericality_validation_test.rb    |  2 +-
 .../test/cases/validations/presence_validation_test.rb   |  2 +-
 activemodel/test/cases/validations/validates_test.rb     |  2 +-
 .../test/cases/validations/validations_context_test.rb   |  2 +-
 .../test/cases/validations/with_validation_test.rb       |  2 +-
 activemodel/test/cases/validations_test.rb               |  2 +-
 50 files changed, 57 insertions(+), 57 deletions(-)

diff --git a/activemodel/test/cases/attribute_assignment_test.rb b/activemodel/test/cases/attribute_assignment_test.rb
index 30e8419685..36e279f06b 100644
--- a/activemodel/test/cases/attribute_assignment_test.rb
+++ b/activemodel/test/cases/attribute_assignment_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 require "active_support/core_ext/hash/indifferent_access"
 require "active_support/hash_with_indifferent_access"
 
-class AttributeAssignmentTest < ActiveModel::TestCase
+class AttributeAssignmentTest < ActiveSupport::TestCase
   class Model
     include ActiveModel::AttributeAssignment
 
diff --git a/activemodel/test/cases/attribute_methods_test.rb b/activemodel/test/cases/attribute_methods_test.rb
index e3b3b15f25..09161dd719 100644
--- a/activemodel/test/cases/attribute_methods_test.rb
+++ b/activemodel/test/cases/attribute_methods_test.rb
@@ -94,7 +94,7 @@ class ModelWithoutAttributesMethod
   include ActiveModel::AttributeMethods
 end
 
-class AttributeMethodsTest < ActiveModel::TestCase
+class AttributeMethodsTest < ActiveSupport::TestCase
   test "method missing works correctly even if attributes method is not defined" do
     assert_raises(NoMethodError) { ModelWithoutAttributesMethod.new.foo }
   end
diff --git a/activemodel/test/cases/attribute_set_test.rb b/activemodel/test/cases/attribute_set_test.rb
index 62feb9074e..d1f0cd36a7 100644
--- a/activemodel/test/cases/attribute_set_test.rb
+++ b/activemodel/test/cases/attribute_set_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 require "active_model/attribute_set"
 
 module ActiveModel
-  class AttributeSetTest < ActiveModel::TestCase
+  class AttributeSetTest < ActiveSupport::TestCase
     test "building a new set from raw attributes" do
       builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Float.new)
       attributes = builder.build_from_database(foo: "1.1", bar: "2.2")
diff --git a/activemodel/test/cases/attribute_test.rb b/activemodel/test/cases/attribute_test.rb
index 097db2e923..e11783e492 100644
--- a/activemodel/test/cases/attribute_test.rb
+++ b/activemodel/test/cases/attribute_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 
 module ActiveModel
-  class AttributeTest < ActiveModel::TestCase
+  class AttributeTest < ActiveSupport::TestCase
     setup do
       @type = Minitest::Mock.new
     end
diff --git a/activemodel/test/cases/attributes_dirty_test.rb b/activemodel/test/cases/attributes_dirty_test.rb
index f9693a23cd..58244e7b79 100644
--- a/activemodel/test/cases/attributes_dirty_test.rb
+++ b/activemodel/test/cases/attributes_dirty_test.rb
@@ -2,7 +2,7 @@
 
 require "cases/helper"
 
-class AttributesDirtyTest < ActiveModel::TestCase
+class AttributesDirtyTest < ActiveSupport::TestCase
   class DirtyModel
     include ActiveModel::Model
     include ActiveModel::Attributes
diff --git a/activemodel/test/cases/attributes_test.rb b/activemodel/test/cases/attributes_test.rb
index af0ddcb92f..335f151e31 100644
--- a/activemodel/test/cases/attributes_test.rb
+++ b/activemodel/test/cases/attributes_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 
 module ActiveModel
-  class AttributesTest < ActiveModel::TestCase
+  class AttributesTest < ActiveSupport::TestCase
     class ModelForAttributesTest
       include ActiveModel::Model
       include ActiveModel::Attributes
diff --git a/activemodel/test/cases/callbacks_test.rb b/activemodel/test/cases/callbacks_test.rb
index 0711dc56ca..d38f773afd 100644
--- a/activemodel/test/cases/callbacks_test.rb
+++ b/activemodel/test/cases/callbacks_test.rb
@@ -2,7 +2,7 @@
 
 require "cases/helper"
 
-class CallbacksTest < ActiveModel::TestCase
+class CallbacksTest < ActiveSupport::TestCase
   class CallbackValidator
     def around_create(model)
       model.callbacks << :before_around_create
diff --git a/activemodel/test/cases/conversion_test.rb b/activemodel/test/cases/conversion_test.rb
index 347896ed50..e46a2ac622 100644
--- a/activemodel/test/cases/conversion_test.rb
+++ b/activemodel/test/cases/conversion_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 require "models/contact"
 require "models/helicopter"
 
-class ConversionTest < ActiveModel::TestCase
+class ConversionTest < ActiveSupport::TestCase
   test "to_model default implementation returns self" do
     contact = Contact.new
     assert_equal contact, contact.to_model
diff --git a/activemodel/test/cases/dirty_test.rb b/activemodel/test/cases/dirty_test.rb
index 0edbbffa86..44f11751a0 100644
--- a/activemodel/test/cases/dirty_test.rb
+++ b/activemodel/test/cases/dirty_test.rb
@@ -2,7 +2,7 @@
 
 require "cases/helper"
 
-class DirtyTest < ActiveModel::TestCase
+class DirtyTest < ActiveSupport::TestCase
   class DirtyModel
     include ActiveModel::Dirty
     define_attribute_methods :name, :color, :size, :status
diff --git a/activemodel/test/cases/error_test.rb b/activemodel/test/cases/error_test.rb
index d74321fee5..fad85cbb80 100644
--- a/activemodel/test/cases/error_test.rb
+++ b/activemodel/test/cases/error_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 require "active_model/error"
 
-class ErrorTest < ActiveModel::TestCase
+class ErrorTest < ActiveSupport::TestCase
   class Person
     extend ActiveModel::Naming
     def initialize
diff --git a/activemodel/test/cases/errors_test.rb b/activemodel/test/cases/errors_test.rb
index a6cd1da717..62b14df4a4 100644
--- a/activemodel/test/cases/errors_test.rb
+++ b/activemodel/test/cases/errors_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 require "yaml"
 
-class ErrorsTest < ActiveModel::TestCase
+class ErrorsTest < ActiveSupport::TestCase
   class Person
     extend ActiveModel::Naming
     def initialize
diff --git a/activemodel/test/cases/lint_test.rb b/activemodel/test/cases/lint_test.rb
index d62c80b71a..4b1e32d506 100644
--- a/activemodel/test/cases/lint_test.rb
+++ b/activemodel/test/cases/lint_test.rb
@@ -2,7 +2,7 @@
 
 require "cases/helper"
 
-class LintTest < ActiveModel::TestCase
+class LintTest < ActiveSupport::TestCase
   include ActiveModel::Lint::Tests
 
   class CompliantModel
diff --git a/activemodel/test/cases/model_test.rb b/activemodel/test/cases/model_test.rb
index b24d7e3571..c8f598306e 100644
--- a/activemodel/test/cases/model_test.rb
+++ b/activemodel/test/cases/model_test.rb
@@ -2,7 +2,7 @@
 
 require "cases/helper"
 
-class ModelTest < ActiveModel::TestCase
+class ModelTest < ActiveSupport::TestCase
   include ActiveModel::Lint::Tests
 
   module DefaultValue
diff --git a/activemodel/test/cases/naming_test.rb b/activemodel/test/cases/naming_test.rb
index 4693da434c..d1f5bc2b82 100644
--- a/activemodel/test/cases/naming_test.rb
+++ b/activemodel/test/cases/naming_test.rb
@@ -6,7 +6,7 @@ require "models/sheep"
 require "models/track_back"
 require "models/blog_post"
 
-class NamingTest < ActiveModel::TestCase
+class NamingTest < ActiveSupport::TestCase
   def setup
     @model_name = ActiveModel::Name.new(Post::TrackBack)
   end
@@ -44,7 +44,7 @@ class NamingTest < ActiveModel::TestCase
   end
 end
 
-class NamingWithNamespacedModelInIsolatedNamespaceTest < ActiveModel::TestCase
+class NamingWithNamespacedModelInIsolatedNamespaceTest < ActiveSupport::TestCase
   def setup
     @model_name = ActiveModel::Name.new(Blog::Post, Blog)
   end
@@ -82,7 +82,7 @@ class NamingWithNamespacedModelInIsolatedNamespaceTest < ActiveModel::TestCase
   end
 end
 
-class NamingWithNamespacedModelInSharedNamespaceTest < ActiveModel::TestCase
+class NamingWithNamespacedModelInSharedNamespaceTest < ActiveSupport::TestCase
   def setup
     @model_name = ActiveModel::Name.new(Blog::Post)
   end
@@ -120,7 +120,7 @@ class NamingWithNamespacedModelInSharedNamespaceTest < ActiveModel::TestCase
   end
 end
 
-class NamingWithSuppliedModelNameTest < ActiveModel::TestCase
+class NamingWithSuppliedModelNameTest < ActiveSupport::TestCase
   def setup
     @model_name = ActiveModel::Name.new(Blog::Post, nil, "Article")
   end
@@ -158,7 +158,7 @@ class NamingWithSuppliedModelNameTest < ActiveModel::TestCase
   end
 end
 
-class NamingUsingRelativeModelNameTest < ActiveModel::TestCase
+class NamingUsingRelativeModelNameTest < ActiveSupport::TestCase
   def setup
     @model_name = Blog::Post.model_name
   end
@@ -196,7 +196,7 @@ class NamingUsingRelativeModelNameTest < ActiveModel::TestCase
   end
 end
 
-class NamingHelpersTest < ActiveModel::TestCase
+class NamingHelpersTest < ActiveSupport::TestCase
   def setup
     @klass  = Contact
     @record = @klass.new
@@ -262,7 +262,7 @@ class NamingHelpersTest < ActiveModel::TestCase
     end
 end
 
-class NameWithAnonymousClassTest < ActiveModel::TestCase
+class NameWithAnonymousClassTest < ActiveSupport::TestCase
   def test_anonymous_class_without_name_argument
     assert_raises(ArgumentError) do
       ActiveModel::Name.new(Class.new)
@@ -275,7 +275,7 @@ class NameWithAnonymousClassTest < ActiveModel::TestCase
   end
 end
 
-class NamingMethodDelegationTest < ActiveModel::TestCase
+class NamingMethodDelegationTest < ActiveSupport::TestCase
   def test_model_name
     assert_equal Blog::Post.model_name, Blog::Post.new.model_name
   end
diff --git a/activemodel/test/cases/nested_error_test.rb b/activemodel/test/cases/nested_error_test.rb
index 6c2458ba83..c53355baff 100644
--- a/activemodel/test/cases/nested_error_test.rb
+++ b/activemodel/test/cases/nested_error_test.rb
@@ -5,7 +5,7 @@ require "active_model/nested_error"
 require "models/topic"
 require "models/reply"
 
-class NestedErrorTest < ActiveModel::TestCase
+class NestedErrorTest < ActiveSupport::TestCase
   def test_initialize
     topic = Topic.new
     inner_error = ActiveModel::Error.new(topic, :title, :not_enough, count: 2)
diff --git a/activemodel/test/cases/railtie_test.rb b/activemodel/test/cases/railtie_test.rb
index f5ff1a3fd7..53f326a36b 100644
--- a/activemodel/test/cases/railtie_test.rb
+++ b/activemodel/test/cases/railtie_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 require "active_support/testing/isolation"
 
-class RailtieTest < ActiveModel::TestCase
+class RailtieTest < ActiveSupport::TestCase
   include ActiveSupport::Testing::Isolation
 
   def setup
diff --git a/activemodel/test/cases/secure_password_test.rb b/activemodel/test/cases/secure_password_test.rb
index 0aca714bd2..9ce9f696f0 100644
--- a/activemodel/test/cases/secure_password_test.rb
+++ b/activemodel/test/cases/secure_password_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 require "models/user"
 require "models/visitor"
 
-class SecurePasswordTest < ActiveModel::TestCase
+class SecurePasswordTest < ActiveSupport::TestCase
   setup do
     # Used only to speed up tests
     @original_min_cost = ActiveModel::SecurePassword.min_cost
diff --git a/activemodel/test/cases/serialization_test.rb b/activemodel/test/cases/serialization_test.rb
index 6826d2bbd1..c2484aaa37 100644
--- a/activemodel/test/cases/serialization_test.rb
+++ b/activemodel/test/cases/serialization_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 require "active_support/core_ext/object/instance_variables"
 
-class SerializationTest < ActiveModel::TestCase
+class SerializationTest < ActiveSupport::TestCase
   class User
     include ActiveModel::Serialization
 
diff --git a/activemodel/test/cases/serializers/json_serialization_test.rb b/activemodel/test/cases/serializers/json_serialization_test.rb
index 84efc8de0d..871eab36e2 100644
--- a/activemodel/test/cases/serializers/json_serialization_test.rb
+++ b/activemodel/test/cases/serializers/json_serialization_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 require "models/contact"
 require "active_support/core_ext/object/instance_variables"
 
-class JsonSerializationTest < ActiveModel::TestCase
+class JsonSerializationTest < ActiveSupport::TestCase
   def setup
     @contact = Contact.new
     @contact.name = "Konata Izumi"
diff --git a/activemodel/test/cases/translation_test.rb b/activemodel/test/cases/translation_test.rb
index cd75afec9e..1cc7246477 100644
--- a/activemodel/test/cases/translation_test.rb
+++ b/activemodel/test/cases/translation_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 require "models/person"
 
-class ActiveModelI18nTests < ActiveModel::TestCase
+class ActiveModelI18nTests < ActiveSupport::TestCase
   def setup
     I18n.backend = I18n::Backend::Simple.new
   end
diff --git a/activemodel/test/cases/type/big_integer_test.rb b/activemodel/test/cases/type/big_integer_test.rb
index 0fa0200df4..1ab0abe9ce 100644
--- a/activemodel/test/cases/type/big_integer_test.rb
+++ b/activemodel/test/cases/type/big_integer_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class BigIntegerTest < ActiveModel::TestCase
+    class BigIntegerTest < ActiveSupport::TestCase
       def test_type_cast_big_integer
         type = Type::BigInteger.new
         assert_equal 1, type.cast(1)
diff --git a/activemodel/test/cases/type/binary_test.rb b/activemodel/test/cases/type/binary_test.rb
index 3221a73e49..b04b59f8dd 100644
--- a/activemodel/test/cases/type/binary_test.rb
+++ b/activemodel/test/cases/type/binary_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class BinaryTest < ActiveModel::TestCase
+    class BinaryTest < ActiveSupport::TestCase
       def test_type_cast_binary
         type = Type::Binary.new
         assert_nil type.cast(nil)
diff --git a/activemodel/test/cases/type/boolean_test.rb b/activemodel/test/cases/type/boolean_test.rb
index 7f8490b2fe..30c41ca80c 100644
--- a/activemodel/test/cases/type/boolean_test.rb
+++ b/activemodel/test/cases/type/boolean_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class BooleanTest < ActiveModel::TestCase
+    class BooleanTest < ActiveSupport::TestCase
       def test_type_cast_boolean
         type = Type::Boolean.new
         assert_predicate type.cast(""), :nil?
diff --git a/activemodel/test/cases/type/date_test.rb b/activemodel/test/cases/type/date_test.rb
index 2dd1a55616..38649c4471 100644
--- a/activemodel/test/cases/type/date_test.rb
+++ b/activemodel/test/cases/type/date_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class DateTest < ActiveModel::TestCase
+    class DateTest < ActiveSupport::TestCase
       def test_type_cast_date
         type = Type::Date.new
         assert_nil type.cast(nil)
diff --git a/activemodel/test/cases/type/date_time_test.rb b/activemodel/test/cases/type/date_time_test.rb
index 4a63eee0cf..68dd4995d0 100644
--- a/activemodel/test/cases/type/date_time_test.rb
+++ b/activemodel/test/cases/type/date_time_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class DateTimeTest < ActiveModel::TestCase
+    class DateTimeTest < ActiveSupport::TestCase
       def test_type_cast_datetime_and_timestamp
         type = Type::DateTime.new
         assert_nil type.cast(nil)
diff --git a/activemodel/test/cases/type/decimal_test.rb b/activemodel/test/cases/type/decimal_test.rb
index be60c4f7fa..af89ef309b 100644
--- a/activemodel/test/cases/type/decimal_test.rb
+++ b/activemodel/test/cases/type/decimal_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class DecimalTest < ActiveModel::TestCase
+    class DecimalTest < ActiveSupport::TestCase
       def test_type_cast_decimal
         type = Decimal.new
         assert_equal BigDecimal("0"), type.cast(BigDecimal("0"))
diff --git a/activemodel/test/cases/type/float_test.rb b/activemodel/test/cases/type/float_test.rb
index 230a8dda32..2b2c99b8ce 100644
--- a/activemodel/test/cases/type/float_test.rb
+++ b/activemodel/test/cases/type/float_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class FloatTest < ActiveModel::TestCase
+    class FloatTest < ActiveSupport::TestCase
       def test_type_cast_float
         type = Type::Float.new
         assert_equal 1.0, type.cast("1")
diff --git a/activemodel/test/cases/type/immutable_string_test.rb b/activemodel/test/cases/type/immutable_string_test.rb
index 751f753ddb..b3140c2682 100644
--- a/activemodel/test/cases/type/immutable_string_test.rb
+++ b/activemodel/test/cases/type/immutable_string_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class ImmutableStringTest < ActiveModel::TestCase
+    class ImmutableStringTest < ActiveSupport::TestCase
       test "cast strings are frozen" do
         s = "foo"
         type = Type::ImmutableString.new
diff --git a/activemodel/test/cases/type/integer_test.rb b/activemodel/test/cases/type/integer_test.rb
index 6c02c01237..79bd7ee95d 100644
--- a/activemodel/test/cases/type/integer_test.rb
+++ b/activemodel/test/cases/type/integer_test.rb
@@ -5,7 +5,7 @@ require "active_support/core_ext/numeric/time"
 
 module ActiveModel
   module Type
-    class IntegerTest < ActiveModel::TestCase
+    class IntegerTest < ActiveSupport::TestCase
       test "simple values" do
         type = Type::Integer.new
         assert_nil type.cast("")
diff --git a/activemodel/test/cases/type/registry_test.rb b/activemodel/test/cases/type/registry_test.rb
index 0633ea2538..2afc54f1f5 100644
--- a/activemodel/test/cases/type/registry_test.rb
+++ b/activemodel/test/cases/type/registry_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class RegistryTest < ActiveModel::TestCase
+    class RegistryTest < ActiveSupport::TestCase
       test "a class can be registered for a symbol" do
         registry = Type::Registry.new
         registry.register(:foo, ::String)
diff --git a/activemodel/test/cases/type/string_test.rb b/activemodel/test/cases/type/string_test.rb
index 9cc530e8db..999368fd13 100644
--- a/activemodel/test/cases/type/string_test.rb
+++ b/activemodel/test/cases/type/string_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class StringTest < ActiveModel::TestCase
+    class StringTest < ActiveSupport::TestCase
       test "type casting" do
         type = Type::String.new
         assert_equal "t", type.cast(true)
diff --git a/activemodel/test/cases/type/time_test.rb b/activemodel/test/cases/type/time_test.rb
index 5c6271241d..095dbd6d83 100644
--- a/activemodel/test/cases/type/time_test.rb
+++ b/activemodel/test/cases/type/time_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class TimeTest < ActiveModel::TestCase
+    class TimeTest < ActiveSupport::TestCase
       def test_type_cast_time
         type = Type::Time.new
         assert_nil type.cast(nil)
diff --git a/activemodel/test/cases/type/value_test.rb b/activemodel/test/cases/type/value_test.rb
index 55b5d9d584..6edacb9833 100644
--- a/activemodel/test/cases/type/value_test.rb
+++ b/activemodel/test/cases/type/value_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 module ActiveModel
   module Type
-    class ValueTest < ActiveModel::TestCase
+    class ValueTest < ActiveSupport::TestCase
       def test_type_equality
         assert_equal Type::Value.new, Type::Value.new
         assert_not_equal Type::Value.new, Type::Integer.new
diff --git a/activemodel/test/cases/validations/absence_validation_test.rb b/activemodel/test/cases/validations/absence_validation_test.rb
index 8bc4f4723a..1701acd568 100644
--- a/activemodel/test/cases/validations/absence_validation_test.rb
+++ b/activemodel/test/cases/validations/absence_validation_test.rb
@@ -5,7 +5,7 @@ require "models/topic"
 require "models/person"
 require "models/custom_reader"
 
-class AbsenceValidationTest < ActiveModel::TestCase
+class AbsenceValidationTest < ActiveSupport::TestCase
   teardown do
     Topic.clear_validators!
     Person.clear_validators!
diff --git a/activemodel/test/cases/validations/acceptance_validation_test.rb b/activemodel/test/cases/validations/acceptance_validation_test.rb
index 6bd3d292f8..3cdebec1ac 100644
--- a/activemodel/test/cases/validations/acceptance_validation_test.rb
+++ b/activemodel/test/cases/validations/acceptance_validation_test.rb
@@ -6,7 +6,7 @@ require "models/topic"
 require "models/reply"
 require "models/person"
 
-class AcceptanceValidationTest < ActiveModel::TestCase
+class AcceptanceValidationTest < ActiveSupport::TestCase
   teardown do
     self.class.send(:remove_const, :TestClass)
   end
diff --git a/activemodel/test/cases/validations/callbacks_test.rb b/activemodel/test/cases/validations/callbacks_test.rb
index ff3cf61746..65b5ee1e57 100644
--- a/activemodel/test/cases/validations/callbacks_test.rb
+++ b/activemodel/test/cases/validations/callbacks_test.rb
@@ -85,7 +85,7 @@ class DogValidatorWithIfCondition < Dog
   def set_after_validation_marker2; history << "after_validation_marker2" ; end
 end
 
-class CallbacksWithMethodNamesShouldBeCalled < ActiveModel::TestCase
+class CallbacksWithMethodNamesShouldBeCalled < ActiveSupport::TestCase
   def test_if_condition_is_respected_for_before_validation
     d = DogValidatorWithIfCondition.new
     d.valid?
diff --git a/activemodel/test/cases/validations/conditional_validation_test.rb b/activemodel/test/cases/validations/conditional_validation_test.rb
index 9674068aff..e82aa2eacb 100644
--- a/activemodel/test/cases/validations/conditional_validation_test.rb
+++ b/activemodel/test/cases/validations/conditional_validation_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 require "models/topic"
 
-class ConditionalValidationTest < ActiveModel::TestCase
+class ConditionalValidationTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/confirmation_validation_test.rb b/activemodel/test/cases/validations/confirmation_validation_test.rb
index 7bf15e4bee..9a289e77ea 100644
--- a/activemodel/test/cases/validations/confirmation_validation_test.rb
+++ b/activemodel/test/cases/validations/confirmation_validation_test.rb
@@ -5,7 +5,7 @@ require "cases/helper"
 require "models/topic"
 require "models/person"
 
-class ConfirmationValidationTest < ActiveModel::TestCase
+class ConfirmationValidationTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/exclusion_validation_test.rb b/activemodel/test/cases/validations/exclusion_validation_test.rb
index 50bd47065c..389195a8ad 100644
--- a/activemodel/test/cases/validations/exclusion_validation_test.rb
+++ b/activemodel/test/cases/validations/exclusion_validation_test.rb
@@ -6,7 +6,7 @@ require "active_support/core_ext/numeric/time"
 require "models/topic"
 require "models/person"
 
-class ExclusionValidationTest < ActiveModel::TestCase
+class ExclusionValidationTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/format_validation_test.rb b/activemodel/test/cases/validations/format_validation_test.rb
index 2a7088b3e8..feae66602c 100644
--- a/activemodel/test/cases/validations/format_validation_test.rb
+++ b/activemodel/test/cases/validations/format_validation_test.rb
@@ -5,7 +5,7 @@ require "cases/helper"
 require "models/topic"
 require "models/person"
 
-class FormatValidationTest < ActiveModel::TestCase
+class FormatValidationTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb b/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb
index d3e44945db..e9adc7d446 100644
--- a/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb
+++ b/activemodel/test/cases/validations/i18n_generate_message_validation_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 require "models/person"
 
-class I18nGenerateMessageValidationTest < ActiveModel::TestCase
+class I18nGenerateMessageValidationTest < ActiveSupport::TestCase
   def setup
     Person.clear_validators!
     @person = Person.new
diff --git a/activemodel/test/cases/validations/i18n_validation_test.rb b/activemodel/test/cases/validations/i18n_validation_test.rb
index c81649f493..aaa3e4909d 100644
--- a/activemodel/test/cases/validations/i18n_validation_test.rb
+++ b/activemodel/test/cases/validations/i18n_validation_test.rb
@@ -3,7 +3,7 @@
 require "cases/helper"
 require "models/person"
 
-class I18nValidationTest < ActiveModel::TestCase
+class I18nValidationTest < ActiveSupport::TestCase
   def setup
     Person.clear_validators!
     @person = person_class.new
diff --git a/activemodel/test/cases/validations/inclusion_validation_test.rb b/activemodel/test/cases/validations/inclusion_validation_test.rb
index 6669d028a0..3469dd5e9d 100644
--- a/activemodel/test/cases/validations/inclusion_validation_test.rb
+++ b/activemodel/test/cases/validations/inclusion_validation_test.rb
@@ -5,7 +5,7 @@ require "cases/helper"
 require "models/topic"
 require "models/person"
 
-class InclusionValidationTest < ActiveModel::TestCase
+class InclusionValidationTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/length_validation_test.rb b/activemodel/test/cases/validations/length_validation_test.rb
index 37e10f783c..7d59b9a035 100644
--- a/activemodel/test/cases/validations/length_validation_test.rb
+++ b/activemodel/test/cases/validations/length_validation_test.rb
@@ -5,7 +5,7 @@ require "cases/helper"
 require "models/topic"
 require "models/person"
 
-class LengthValidationTest < ActiveModel::TestCase
+class LengthValidationTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/numericality_validation_test.rb b/activemodel/test/cases/validations/numericality_validation_test.rb
index 191af033df..c8afc02894 100644
--- a/activemodel/test/cases/validations/numericality_validation_test.rb
+++ b/activemodel/test/cases/validations/numericality_validation_test.rb
@@ -8,7 +8,7 @@ require "models/person"
 require "bigdecimal"
 require "active_support/core_ext/big_decimal"
 
-class NumericalityValidationTest < ActiveModel::TestCase
+class NumericalityValidationTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/presence_validation_test.rb b/activemodel/test/cases/validations/presence_validation_test.rb
index c3eca41070..ca91b49528 100644
--- a/activemodel/test/cases/validations/presence_validation_test.rb
+++ b/activemodel/test/cases/validations/presence_validation_test.rb
@@ -6,7 +6,7 @@ require "models/topic"
 require "models/person"
 require "models/custom_reader"
 
-class PresenceValidationTest < ActiveModel::TestCase
+class PresenceValidationTest < ActiveSupport::TestCase
   teardown do
     Topic.clear_validators!
     Person.clear_validators!
diff --git a/activemodel/test/cases/validations/validates_test.rb b/activemodel/test/cases/validations/validates_test.rb
index ae5a875c24..090274c0b5 100644
--- a/activemodel/test/cases/validations/validates_test.rb
+++ b/activemodel/test/cases/validations/validates_test.rb
@@ -6,7 +6,7 @@ require "models/topic"
 require "models/person_with_validator"
 require "validators/namespace/email_validator"
 
-class ValidatesTest < ActiveModel::TestCase
+class ValidatesTest < ActiveSupport::TestCase
   setup :reset_callbacks
   teardown :reset_callbacks
 
diff --git a/activemodel/test/cases/validations/validations_context_test.rb b/activemodel/test/cases/validations/validations_context_test.rb
index 3d2dea9828..0f5aee0751 100644
--- a/activemodel/test/cases/validations/validations_context_test.rb
+++ b/activemodel/test/cases/validations/validations_context_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 require "models/topic"
 
-class ValidationsContextTest < ActiveModel::TestCase
+class ValidationsContextTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations/with_validation_test.rb b/activemodel/test/cases/validations/with_validation_test.rb
index e6ae6603f2..6d00ece108 100644
--- a/activemodel/test/cases/validations/with_validation_test.rb
+++ b/activemodel/test/cases/validations/with_validation_test.rb
@@ -4,7 +4,7 @@ require "cases/helper"
 
 require "models/topic"
 
-class ValidatesWithTest < ActiveModel::TestCase
+class ValidatesWithTest < ActiveSupport::TestCase
   def teardown
     Topic.clear_validators!
   end
diff --git a/activemodel/test/cases/validations_test.rb b/activemodel/test/cases/validations_test.rb
index 0b9e1b7005..6565560e29 100644
--- a/activemodel/test/cases/validations_test.rb
+++ b/activemodel/test/cases/validations_test.rb
@@ -9,7 +9,7 @@ require "models/custom_reader"
 require "active_support/json"
 require "active_support/xml_mini"
 
-class ValidationsTest < ActiveModel::TestCase
+class ValidationsTest < ActiveSupport::TestCase
   class CustomStrictValidationException < StandardError; end
 
   def teardown
-- 
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