Adapter helpers are available as AR::TestCase class methods

in case we need to call them outside of test case

Author: amatsuda

activerecord/test/cases/migration_test.rb

@@ -22,7 +22,7 @@ def change
 end
 
 class BigNumber < ActiveRecord::Base
-  unless current_adapter?(:PostgreSQLAdapter, :SQLite3Adapter)
+  unless ActiveRecord::TestCase.current_adapter?(:PostgreSQLAdapter, :SQLite3Adapter)
     attribute :value_of_e, :integer
   end
   attribute :my_house_population, :integer
@@ -393,15 +393,15 @@ def test_add_column_with_casted_type_if_not_exists_set_to_true
     migration_a = Class.new(ActiveRecord::Migration::Current) {
       def version; 100 end
       def migrate(x)
-        type = current_adapter?(:PostgreSQLAdapter) ? :char : :blob
+        type = ActiveRecord::TestCase.current_adapter?(:PostgreSQLAdapter) ? :char : :blob
         add_column "people", "last_name", type
       end
     }.new
 
     migration_b = Class.new(ActiveRecord::Migration::Current) {
       def version; 101 end
       def migrate(x)
-        type = current_adapter?(:PostgreSQLAdapter) ? :char : :blob
+        type = ActiveRecord::TestCase.current_adapter?(:PostgreSQLAdapter) ? :char : :blob
         add_column "people", "last_name", type, if_not_exists: true
       end
     }.new

activerecord/test/schema/mysql2_specific_schema.rb

@@ -21,7 +21,7 @@
     t.datetime :fixed_time, default: "2004-01-01 00:00:00"
     t.column :char1, "char(1)", default: "Y"
     t.string :char2, limit: 50, default: "a varchar field"
-    if supports_default_expression?
+    if ActiveRecord::TestCase.supports_default_expression?
       t.binary :uuid, limit: 36, default: -> { "(uuid())" }
     end
   end

activerecord/test/schema/postgresql_specific_schema.rb

@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
 ActiveRecord::Schema.define do
-  enable_extension!("uuid-ossp", ActiveRecord::Base.connection)
-  enable_extension!("pgcrypto",  ActiveRecord::Base.connection) if ActiveRecord::Base.connection.supports_pgcrypto_uuid?
+  ActiveRecord::TestCase.enable_extension!("uuid-ossp", ActiveRecord::Base.connection)
+  ActiveRecord::TestCase.enable_extension!("pgcrypto",  ActiveRecord::Base.connection) if ActiveRecord::Base.connection.supports_pgcrypto_uuid?
 
   uuid_default = connection.supports_pgcrypto_uuid? ? {} : { default: "uuid_generate_v4()" }
 

activerecord/test/schema/schema.rb

@@ -199,7 +199,7 @@
   create_table :carriers, force: true
 
   create_table :carts, force: true, primary_key: [:shop_id, :id] do |t|
-    if current_adapter?(:Mysql2Adapter)
+    if ActiveRecord::TestCase.current_adapter?(:Mysql2Adapter)
       t.bigint :id, index: true, auto_increment: true, null: false
     else
       t.bigint :id, index: true, null: false
@@ -263,7 +263,7 @@
     t.integer :post_id, null: false
     # use VARCHAR2(4000) instead of CLOB datatype as CLOB data type has many limitations in
     # Oracle SELECT WHERE clause which causes many unit test failures
-    if current_adapter?(:OracleAdapter)
+    if ActiveRecord::TestCase.current_adapter?(:OracleAdapter)
       t.string  :body, null: false, limit: 4000
     else
       t.text    :body, null: false
@@ -731,7 +731,7 @@
     t.float   :temperature
     t.decimal :decimal_number_big_precision, precision: 20
     # Oracle/SQLServer supports precision up to 38
-    if current_adapter?(:OracleAdapter, :SQLServerAdapter)
+    if ActiveRecord::TestCase.current_adapter?(:OracleAdapter, :SQLServerAdapter)
       t.decimal :atoms_in_universe, precision: 38, scale: 0
     else
       t.decimal :atoms_in_universe, precision: 55, scale: 0
@@ -870,7 +870,7 @@
     t.string :title, null: false
     # use VARCHAR2(4000) instead of CLOB datatype as CLOB data type has many limitations in
     # Oracle SELECT WHERE clause which causes many unit test failures
-    if current_adapter?(:OracleAdapter)
+    if ActiveRecord::TestCase.current_adapter?(:OracleAdapter)
       t.string  :body, null: false, limit: 4000
     else
       t.text    :body, null: false
@@ -1107,7 +1107,7 @@
     t.date     :last_read
     # use VARCHAR2(4000) instead of CLOB datatype as CLOB data type has many limitations in
     # Oracle SELECT WHERE clause which causes many unit test failures
-    if current_adapter?(:OracleAdapter)
+    if ActiveRecord::TestCase.current_adapter?(:OracleAdapter)
       t.string   :content, limit: 4000
       t.string   :important, limit: 4000
     else