dev-python/libpillowfight: fix test calls

Use better way to handle pytest C errors

Fixes: 9b96d2dfc7
Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

dev-python/libpillowfight/libpillowfight-0.3.0_p20210816.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -23,6 +23,7 @@ RDEPEND="dev-python/pillow[${PYTHON_USEDEP}]"
 distutils_enable_tests nose
 
 python_prepare_all() {
+	ln -s "${S}"/tests "${T}"/tests || die
 	sed -e "/'nose>=1.0'/d" -i setup.py || die
 	cat > src/pillowfight/_version.h <<- EOF || die
 		#define INTERNAL_PILLOWFIGHT_VERSION "$(ver_cut 1-3)"
@@ -31,8 +32,6 @@ python_prepare_all() {
 }
 
 python_test() {
-	cp -r -l -n tests "${BUILD_DIR}/lib" || die
-	cd "${BUILD_DIR}/lib" || die
-	distutils-r1_python_test
-	rm -r tests || die
+	cd "${T}" || die
+	epytest "${S}"/tests -o addopts=
 }