def f(w):
collector = Collector(w.spec_root_path)
imported_files = []
def mock_import_file_func(path, root):
imported_files.append(path)
collector.import_spec_file = mock_import_file_func
collector.import_spec_files()
expected = ['a_spec.py', 'b/b_spec.py', 'c/d/d_spec.py']
expected = set(['%s/%s' % (w.spec_root_path, x) for x in expected])
assert set(imported_files) == expected, '%r != %r' % (imported_files, expected)
