rename MiniTest to Minitest

activerecord/test/cases/attribute_test.rb

@@ -4,7 +4,7 @@ require 'minitest/mock'
 module ActiveRecord
   class AttributeTest < ActiveRecord::TestCase
     setup do
-      @type = MiniTest::Mock.new
+      @type = Minitest::Mock.new
     end
 
     teardown do

activerecord/test/cases/migration/pending_migrations_test.rb

@@ -6,8 +6,8 @@ module ActiveRecord
     class PendingMigrationsTest < ActiveRecord::TestCase
       def setup
         super
-        @connection = MiniTest::Mock.new
-        @app = MiniTest::Mock.new
+        @connection = Minitest::Mock.new
+        @app = Minitest::Mock.new
         conn = @connection
         @pending = Class.new(CheckPending) {
           define_method(:connection) { conn }