rspec users - Mar 2009 - How to dummy a DB adapter?

I am writing a library module to handle certain StatementInvalid type AR
exceptions.  I wish to catch the case where the db adapter in use is not
supported by the module.  I would like to test this situation and have
only a vague idea as to how to proceed.

My exception handling method selects the parsing method based on the
adapter_name value.

  def hll_ar_exception(exception)
    raise exception unless exception.class.to_s =                          
''ActiveRecord::StatementInvalid''
    acan =  self.connection.adapter_name
    case acan
    when ''MySQL''
      hll_parse_mysql
    when ''PostgreSQL''
      hll_parse_postgresql
    when ''SQLite''
      hll_parse_sqlite(exception)
    else
      Rails::logger.warn("Adapter #{acan} not supported by
hll_ar_exception.")
      raise exception
    end
  end

I am thinking about simply opening SQLiteAdapter and overriding the
adapter_name method to some arbitrary value for the test.  However, it
occurs to me that there are probably better ways to do what I am trying
to accomplish so I welcome any suggestions on how to proceed.
-- 
Posted via http://www.ruby-forum.com/.

On 11-mrt-2009, at 19:02, James Byrne wrote:
> I am thinking about simply opening SQLiteAdapter and overriding the
> adapter_name method to some arbitrary value for the test.  However, it
> occurs to me that there are probably better ways to do what I am  
> trying
> to accomplish so I welcome any suggestions on how to proceed.
http://rspec.info/documentation/mocks/stubs.html

Stubbing is your newfound friend.

gr,
bartz