django mysql test work-around

mysql_issue_workaround.py

def _mysql_storage_engine(self):
    '''
    birkin, 2012-08:
    - working around failure on SHOW TABLE STATUS WHERE Name='INTROSPECT_TEST' 
    - env/lib/python2.7/site-packages/django/db/backends/mysql/base.py
    - pip freeze yields Django==1.4.1 & MySQL-python==1.2.3, & mysql is v 4.1.22
    '''
    "Internal method used in Django tests. Don't rely on this from your code"
    if self._storage_engine is None:
        cursor = self.connection.cursor()
        cursor.execute('CREATE TABLE INTROSPECT_TEST (X INT)')
        # This command is MySQL specific; the second column
        # will tell you the default table type of the created
        # table. Since all Django's test tables will have the same
        # table type, that's enough to evaluate the feature.
        try:
          cursor.execute("SHOW TABLE STATUS WHERE Name='INTROSPECT_TEST'")
          result = cursor.fetchone()
          cursor.execute('DROP TABLE INTROSPECT_TEST')
          self._storage_engine = result[1]
        except:
          self._storage_engine = 'MyISAM'
    return self._storage_engine