def testcases(): manifest = Manifest(open_data_file('rdfcore/Manifest.rdf')) rdf_suite = RDFTestSuite.from_manifest(manifest, opener=TEST_OPENER) if not TEST_URIS: return rdf_suite else: suite = RDFTestSuite() for test in rdf_suite: if test.id() in TEST_URIS: suite.addTest(test) return suite