1 files changed, 34 insertions, 0 deletions
diff --git a/activerecord/test/cases/column_definition_test.rb b/activerecord/test/cases/column_definition_test.rb
index b5767344cd..cc6a6b44f2 100644
--- a/activerecord/test/cases/column_definition_test.rb
+++ b/activerecord/test/cases/column_definition_test.rb
@@ -68,6 +68,40 @@ class ColumnDefinitionTest < ActiveRecord::TestCase
     end
   end
 
+  if current_adapter?(:Mysql2Adapter)
+    def test_should_set_default_for_mysql_binary_data_types
+      binary_column = ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", "a", "binary(1)")
+      assert_equal "a", binary_column.default
+
+      varbinary_column = ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", "a", "varbinary(1)")
+      assert_equal "a", varbinary_column.default
+    end
+
+    def test_should_not_set_default_for_blob_and_text_data_types
+      assert_raise ArgumentError do
+        ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", "a", "blob")
+      end
+
+      assert_raise ArgumentError do
+        ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", "Hello", "text")
+      end
+
+      text_column = ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", nil, "text")
+      assert_equal nil, text_column.default
+
+      not_null_text_column = ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", nil, "text", false)
+      assert_equal "", not_null_text_column.default
+    end
+
+    def test_has_default_should_return_false_for_blog_and_test_data_types
+      blob_column = ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", nil, "blob")
+      assert !blob_column.has_default?
+
+      text_column = ActiveRecord::ConnectionAdapters::Mysql2Column.new("title", nil, "text")
+      assert !text_column.has_default?
+    end
+  end
+
   if current_adapter?(:PostgreSQLAdapter)
     def test_bigint_column_should_map_to_integer
       bigint_column = ActiveRecord::ConnectionAdapters::PostgreSQLColumn.new('number', nil, "bigint")