checking in the abstractions for valid type checking:

3 files changed, 27 insertions, 0 deletions

diff --git a/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb b/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
index 0eb1cc511e..0b017dc4a0 100644
--- a/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
+++ b/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
@@ -16,6 +16,15 @@ module ActiveRecord
         eosql
       end
 
+      def test_valid_column
+        column = @conn.column('ex').find { |col| col.name == 'id' }
+        assert @conn.valid_type?(column.type)
+      end
+
+      def test_invalid_column
+        assert !@conn.valid_type?(:foobar)
+      end
+
       def test_client_encoding
         assert_equal Encoding::UTF_8, @conn.client_encoding
       end
diff --git a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
index 872204c644..d33e360bd4 100644
--- a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
@@ -10,6 +10,15 @@ module ActiveRecord
         @connection.exec_query('create table ex(id serial primary key, number integer, data character varying(255))')
       end
 
+      def test_valid_column
+        column = @connection.column('ex').find { |col| col.name == 'id' }
+        assert @connection.valid_type?(column.type)
+      end
+
+      def test_invalid_column
+        assert !@connection.valid_type?(:foobar)
+      end
+
       def test_primary_key
         assert_equal 'id', @connection.primary_key('ex')
       end
diff --git a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
index 003052bac4..64af49acec 100644
--- a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
+++ b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
@@ -25,6 +25,15 @@ module ActiveRecord
         @conn.intercepted = true
       end
 
+      def test_valid_column
+        column = @conn.column('items').find { |col| col.name == 'id' }
+        assert @conn.valid_type?(column.type)
+      end
+
+      def test_invalid_column
+        assert @conn.valid_type?(:foobar)
+      end
+
       def teardown
         @conn.intercepted = false
         @conn.logged = []