[TIP] nose TestSuite discovery & reusable test design
holger krekel
holger at merlinux.eu
Sun May 24 03:36:13 PDT 2009
Hi Brian,
can't answer your specific question but are you aware that
there are active and helpful nose-users and nose-developers
google group mailing lists?
holger
On Sat, May 23, 2009 at 12:52 -0400, Brian Beck wrote:
> Hi list,
>
> A couple questions. I tried searching for this first one with no
> luck, so I apologize if this comes up often:
>
> - I can't get Nose 0.11.1 to play well with unittest.TestSuite
> instances, both in discovery and in running. If I do this:
>
> test_suite = TestSuite()
> test_suite.addTests(...generate some sequence of TestCases...)
>
> ...then I find it odd that Nose doesn't discover that TestSuite
> instance. If I do this:
>
> def test_suite():
> suite = TestSuite()
> suite.addTests(...generate some sequence of TestCases...)
> return suite
>
> ...then Nose will discover and run the "suite", but really just
> considers it a single test, instead of my expected behavior of
> reporting on all tests in the suite.
>
> My second question reveals why I want to use a TestSuite and generate
> TestCase instances. I'm writing helpers for running the Data Access
> Working Group's SPARQL test suite [1]. The test suite is modeled in
> RDF and individual tests are collected in manifests. An example: one
> type if test is a syntax test (for testing a SPARQL query parser), so
> there is a syntax test manifest describing only those. I have
> ManifestTestSuite and SyntaxTestCase classes that know how to read and
> run these.
>
> My question is about reusability. These helpers could be used by
> anyone testing their SPARQL parser or engine. Is there a common
> pattern for connecting reusable test classes to the objects under
> test? My current code looks like this:
>
> syntax_suite = ManifestTestSuite()
> syntax_suite.configure(parser=parse_callable, failure_exception=ParseError)
> syntax_suite.add_from_manifest('dawg/data-r2/manifest-syntax.ttl')
>
> My `configure` method just sets `parser` and `failure_exception`
> attributes used by the tests. These are the parts that could be
> replaced with anyone's SPARQL parser. But is there an existing
> pattern for sending the objects under test to pre-built tests?
>
> Thanks!
>
> [1] http://www.w3.org/2001/sw/DataAccess/tests/r2
>
> --
> Brian Beck / Adventurer of the First Order / www.brianbeck.com
> Unstoppable Rocket, LLC / www.unstoppablerocket.com
>
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