Add pytest.ini.

skytreader · skytreader · commit 80ac9f57bccd · 2020-09-06T02:59:14.000+08:00
Because I never found pytest's test discovery as advertised.
diff --git a/pytest.ini b/pytest.ini
@@ -0,0 +1,2 @@
+[pytest]
+python_files = *_tests.py
