Actually run the tests during build

Fixes https://bugzilla.redhat.com/2026941

python-lxml.spec

@@ -2,7 +2,7 @@
 
 Name:           python-%{modname}
 Version:        4.6.3
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        XML processing library combining libxml2/libxslt with the ElementTree API
 
 # The lxml project is licensed under BSD
@@ -13,6 +13,9 @@ License:        BSD and MIT and zlib
 URL:            https://github.com/lxml/lxml
 Source0:        %{pypi_source %{modname}}
 
+# Adapt a test to a behavioural change in libxml2 2.9.11+
+Patch1:         %{url}/commit/852ed1092b.patch
+
 BuildRequires:  gcc
 BuildRequires:  libxml2-devel
 BuildRequires:  libxslt-devel
@@ -52,7 +55,11 @@ env WITH_CYTHON=true %py3_build
 %py3_install
 
 %check
-%{__python3} setup.py test
+# The tests assume inplace build, so we copy the built library to source-dir.
+# If not done that, Python can either import the tests or the extension modules, but not both.
+cp -a build/lib.%{python3_platform}-%{python3_version}/* src/
+# The options are: verbose, unit, functional
+%{python3} test.py -vuf
 
 %files -n python3-%{modname}
 %license LICENSES.txt doc/licenses/BSD.txt doc/licenses/elementtree.txt
@@ -61,6 +68,10 @@ env WITH_CYTHON=true %py3_build
 %{python3_sitearch}/%{modname}-*.egg-info/
 
 %changelog
+* Fri Nov 26 2021 Miro Hrončok <mhroncok@redhat.com> - 4.6.3-5
+- Run the tests during build
+- Resolves: rhbz#2026941
+
 * Fri Jul 23 2021 Fedora Release Engineering <releng@fedoraproject.org> - 4.6.3-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild