Resetting fixtures for each iteration within a single test

Rails
1

Hi,

I want to reset the fixture data manually during a single test. I know
this action is performed between tests, but I need to trigger it
within a single test.

I need this because I have a directory full of test data (xml files)
which need to be sent to the application and validated for their
response. These files are all sent to a single controller action,
which dispatches the request to the appropriate Restful controller/
action. This controller mainly exists for backward compatibility
reasons which do not map to Restful controllers.
I already have tests on the Restful controller actions, but I want to
run this dispatching test as well. So what I do now is create a single
test which iterates over all these files and after each run reset! the
session for the next run.

class DispatcherControllerTest < Test::Unit::TestCase

def test_all_xml_files
all_files.each do |file|
post :submit, file
…assertions…
reset!
end
end

end

The problem is that the submitted files change the state of the
application. I don’t want the tests to be dependent of each other so I
want to reset the fixture data after each iteration, but I can’t find
the method to do this.

Does anybody know how to reset the fixtures manually during a single
test?

Thanks in advance,
Bas van Westing

2

On 14 Nov 2007, at 20:56, Bas van Westing wrote:

the method to do this.

Does anybody know how to reset the fixtures manually during a single
test?

You need to rollback the current database transaction and start a new
one.
An alternative method would be to dynamically generate a testcase for
each data file you have.

Fred

3

Hi Fred,

Thanks for your response. Can you also give me the statement which
rolls back the current database transaction?

Regards, Bas

On Nov 14, 10:33 pm, Frederick C. [email protected]

4

On 15 Nov 2007, at 15:45, Bas van Westing wrote:

Hi Fred,

Thanks for your response. Can you also give the statement for rolling
back the current database transaction?

ActiveRecord::Base.connection.rollback_db_transaction
ActiveRecord::Base.connection.begin_db_transaction

Fred

5

Fred,

Thanks for your help. I ended up generating the test cases dynamically
as you suggested.
This gives nicer test outputs in case of failing test cases. Ruby is
so beautiful…

class DispatcherControllerTest < Test::Unit::TestCase

Dir.glob( “#{File.dirname(FILE)}/…/internal/*input.xml” ).each
do |input_filename|
output_filename = input_filename.gsub( ‘input.xml’, ‘output.xml’)
next unless File.exists?( output_filename )
method_name = “test_internal_#{File.basename(input_filename,
‘.xml’)}”
define_method( method_name ) do
…Actual method contents here, comparing the response with the
expected output file…
end
end

end

On Nov 15, 5:04 pm, Frederick C. [email protected]