Move testing to MODPY_PYTEST.

Include patch for setup.cfg ( pytest -> tool:pytest )

textproc/py-cssselect/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.12 2019/07/12 20:50:11 sthen Exp $
+# $OpenBSD: Makefile,v 1.13 2019/11/25 21:53:58 kmos Exp $
 
 COMMENT =		parse CSS3 Selectors and translates them to XPath 1.0
 
@@ -20,11 +20,9 @@ MODULES =		lang/python
 TEST_DEPENDS =		textproc/py-lxml${MODPY_FLAVOR}
 
 MODPY_SETUPTOOLS =	Yes
+MODPY_PYTEST =		Yes
 
 FLAVORS =		python3
 FLAVOR ?=
 
-do-test:
-	cd ${WRKSRC} && ${MODPY_BIN} -m unittest discover
-
 .include <bsd.port.mk>

textproc/py-cssselect/patches/patch-setup_cfg

@@ -0,0 +1,14 @@
+$OpenBSD: patch-setup_cfg,v 1.1 2019/11/25 21:53:58 kmos Exp $
+
+Index: setup.cfg
+--- setup.cfg.orig
++++ setup.cfg
+@@ -6,7 +6,7 @@ build-dir  = docs/_build
+ [upload_sphinx] # Sphinx-PyPI-upload
+ upload-dir = docs/_build/html
+ 
+-[pytest]
++[tool:pytest]
+ testpaths = tests
+ 
+ [bdist_wheel]