Newbie - Problem running unit test because of text column

Rails
1

I’m new to Ruby and Rails and I’m having a problem. I’ve creates a
ruby schema file defining a table containing a text column. I am able
to migrate this table to a MySQL database with no problem.

Here is the table definition from my migration file.

create_table "strings", :force => true do |t|
  t.column "string", :text, :null => false
end

However, when I try to run the Rake target to run my unit tests, I
get the following error.

Mysql::Error: #42000BLOB/TEXT column ‘string’ can’t have a default
value:
CREATE TABLE strings (id int(11) DEFAULT NULL auto_increment
PRIMARY KEY, string text
DEFAULT ‘’ NOT NULL) ENGINE=InnoDB

Can anone tell me what’s going on here? I can figure out how to get
the DEFAULT ‘’ out of the generated SQL. Again, this does not happen
when I run migrations. Does it use different code?