Add view tests for MySQL

Basically view tests for MySQL are same with
`test/cases/adapters/postgresql/view_test.rb`.

So move `test/cases/adapters/postgresql/view_test.rb` to
`test/cases/view_test.rb` and make them only run if
`current_adapter` supports writable view.

activerecord/test/cases/adapters/postgresql/view_test.rb

-require "cases/helper"
-require "cases/view_test"
-
-class UpdateableViewTest < ActiveRecord::PostgreSQLTestCase
-  fixtures :books
-
-  class PrintedBook < ActiveRecord::Base
-    self.primary_key = "id"
-  end
-
-  setup do
-    @connection = ActiveRecord::Base.connection
-    @connection.execute <<-SQL
-      CREATE VIEW printed_books
-        AS SELECT id, name, status, format FROM books WHERE format = 'paperback'
-    SQL
-  end
-
-  teardown do
-    @connection.execute "DROP VIEW printed_books" if @connection.table_exists? "printed_books"
-  end
-
-  def test_update_record
-    book = PrintedBook.first
-    book.name = "AWDwR"
-    book.save!
-    book.reload
-    assert_equal "AWDwR", book.name
-  end
-
-  def test_insert_record
-    PrintedBook.create! name: "Rails in Action", status: 0, format: "paperback"
-
-    new_book = PrintedBook.last
-    assert_equal "Rails in Action", new_book.name
-  end
-
-  def test_update_record_to_fail_view_conditions
-    book = PrintedBook.first
-    book.format = "ebook"
-    book.save!
-
-    assert_raises ActiveRecord::RecordNotFound do
-      book.reload
-    end
-  end
-end
-
-if ActiveRecord::Base.connection.respond_to?(:supports_materialized_views?) &&
-    ActiveRecord::Base.connection.supports_materialized_views?
-class MaterializedViewTest < ActiveRecord::PostgreSQLTestCase
-  include ViewBehavior
-
-  private
-  def create_view(name, query)
-    @connection.execute "CREATE MATERIALIZED VIEW #{name} AS #{query}"
-  end
-
-  def drop_view(name)
-    @connection.execute "DROP MATERIALIZED VIEW #{name}" if @connection.table_exists? name
-
-  end
-end
-end

activerecord/test/cases/view_test.rb

@@ -110,4 +110,70 @@ def test_does_not_have_a_primary_key
     assert_nil Paperback.primary_key
   end
 end
+
+# sqlite dose not support CREATE, INSERT, and DELETE for VIEW
+if current_adapter?(:MysqlAdapter, :Mysql2Adapter, :PostgreSQLAdapter)
+class UpdateableViewTest < ActiveRecord::TestCase
+  self.use_transactional_tests = false
+  fixtures :books
+
+  class PrintedBook < ActiveRecord::Base
+    self.primary_key = "id"
+  end
+
+  setup do
+    @connection = ActiveRecord::Base.connection
+    @connection.execute <<-SQL
+      CREATE VIEW printed_books
+        AS SELECT id, name, status, format FROM books WHERE format = 'paperback'
+    SQL
+  end
+
+  teardown do
+    @connection.execute "DROP VIEW printed_books" if @connection.table_exists? "printed_books"
+  end
+
+  def test_update_record
+    book = PrintedBook.first
+    book.name = "AWDwR"
+    book.save!
+    book.reload
+    assert_equal "AWDwR", book.name
+  end
+
+  def test_insert_record
+    PrintedBook.create! name: "Rails in Action", status: 0, format: "paperback"
+
+    new_book = PrintedBook.last
+    assert_equal "Rails in Action", new_book.name
+  end
+
+  def test_update_record_to_fail_view_conditions
+    book = PrintedBook.first
+    book.format = "ebook"
+    book.save!
+
+    assert_raises ActiveRecord::RecordNotFound do
+      book.reload
+    end
+  end
+end
+end # end fo `if current_adapter?(:MysqlAdapter, :Mysql2Adapter, :PostgreSQLAdapter)`
+end # end fo `if ActiveRecord::Base.connection.supports_views?`
+
+if ActiveRecord::Base.connection.respond_to?(:supports_materialized_views?) &&
+    ActiveRecord::Base.connection.supports_materialized_views?
+class MaterializedViewTest < ActiveRecord::PostgreSQLTestCase
+  include ViewBehavior
+
+  private
+  def create_view(name, query)
+    @connection.execute "CREATE MATERIALIZED VIEW #{name} AS #{query}"
+  end
+
+  def drop_view(name)
+    @connection.execute "DROP MATERIALIZED VIEW #{name}" if @connection.table_exists? name
+
+  end
+end
 end