gistfile1.pyw

"""
py.test plugin to find unittest cases using the same method that setuptools/setup.py uses.

We can't ready setup.py very easily though :-( So instead we'll read
setup.cfg and get a list of places to search for unittest tests from
there.

We read setup.cfg like this:

[pytest_unittest]
scan = proj.tests:suite

In that example, we will import and run the suite() function to find
unittest TestSuite.

Another example:

[pytest_unittest]
scan = proj.test_dir

We will then import all *.py files found in
proj.test_dir and use any TestCase or TestSuite subclasses found.


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    Neither the name of Logica nor the names of its contributors may
    be used to endorse or promote products derived from this software
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""

import py
import unittest

import sys
import ConfigParser

def pytest_ignore_collect(path, config):
    """Avoid py.test searching in build/ if setup.py exists. This
    stops it finding all the pyc files, which it considers to be in
    the wrong place.
    """
    if path.basename == "build":
        if path.dirpath("setup.py").check():
            return True

def pytest_collect_directory(path, parent):
    # ideally, we would find these by reading setup.py file
    # then looking at dependancies, and reading their setup.py
    # files for the test_suites value
    setupcfg = path.join("setup.cfg")
    if setupcfg.check():
        config = ConfigParser.ConfigParser()
        config.readfp(setupcfg.open())
        if config.has_section("pytest_unittest"):
            spec_list = config.get("pytest_unittest","scan").split()
            return UnitTestScan(setupcfg, parent, spec_list)

class UnitTestScan(py.test.collect.File):
    def __init__(self, name, parent, spec_list):
        super(UnitTestScan, self).__init__(name, parent)
        self.spec_list = spec_list
        
    def collect(self):
        for spec in self.spec_list:
            if ":" in spec:
                modname, funcname = spec.split(":")
                mod = __import__(modname, None, None, ['doc']) 
                func = getattr(mod, funcname)
                suites = func()
            else:
                mod = __import__(spec, None, None, ['doc'])
                from setuptools.command.test import ScanningLoader
                scanningLoader = ScanningLoader()
                suites = scanningLoader.loadTestsFromModule(mod)
            for item in suites:
                if isinstance(item, unittest.TestSuite):
                    yield UnitTestSuite("", parent=self, suite=item)

class UnitTestSuite(py.test.collect.Collector):
    def __init__(self, name, parent, suite):
        super(UnitTestSuite, self).__init__(name, parent)
        self.suite = suite

    def collect(self):
        for item in self.suite:
            if isinstance(item, unittest.TestSuite):
                yield UnitTestSuite("", parent=self, suite=item)
            elif isinstance(item, unittest.TestCase):
                yield UnitTestCase(item.id(), parent=self, case=item)

class UnitTestCase(py.test.collect.Collector):
    def __init__(self, name, parent, case):
        super(UnitTestCase, self).__init__(name, parent)
        self.obj = case
        # try discover the filesystem path for our test case 
        # so that py.test does nicer reporting 
        module = case.__module__
        mod = __import__(module, None, None, ['__doc'])
        fn = mod.__file__.rstrip("co")
        self.fspath = py.path.local(fn)
        
    def collect(self):
        plugin = self.config.pluginmanager.getplugin("unittest")
        return [plugin.UnitTestFunction(self.obj._testMethodName,
                                        parent=self)]