Cannot import from conftest

tests/conftest.py

@@ -68,6 +68,14 @@ def make_test_func(args):
     return test
 
 
+# Provide a fixture for testing in .py files
+@pytest.fixture()
+def run_repo2docker():
+    def run_test(args):
+        return make_test_func(args)()
+    return run_test
+
+
 class Repo2DockerTest(pytest.Function):
     """A pytest.Item for running repo2docker"""
     def __init__(self, name, parent, args):

tests/test_subdir.py

@@ -6,13 +6,14 @@ from os.path import abspath, dirname
 
 import pytest
 from repo2docker.app import Repo2Docker
-from tests.conftest import make_test_func
 
 repo_path = dirname(dirname(abspath(__file__)))
 
-def test_subdir():
+
+def test_subdir(run_repo2docker):
     argv = ['--subdir', 'tests/conda/simple', repo_path]
-    make_test_func(argv)()
+    run_repo2docker(argv)
+
 
 def test_subdir_invalid(caplog):
     caplog.set_level(logging.INFO, logger='Repo2Docker')