Implement %pytest

See https://lists.fedoraproject.org/archives/list/python-devel@lists.fedoraproject.org/thread/XLPDSH362PJKMJCAYOXNJNV53Y66EF6B/

macros.python3

@@ -62,3 +62,12 @@
     print("\\n" .. dirname .. "__pycache__/" .. modulename .. ".cpython-3" .. pyminor .. "{,.opt-?}.pyc")
   end
 }
+
+# This is intended for Python 3 only, hence also no Python version in the name.
+%__pytest /usr/bin/pytest
+%pytest %{expand:\\\
+  CFLAGS="${CFLAGS:-${RPM_OPT_FLAGS}}" LDFLAGS="${LDFLAGS:-${RPM_LD_FLAGS}}"\\\
+  PATH="%{buildroot}%{_bindir}:$PATH"\\\
+  PYTHONPATH="${PYTHONPATH:-%{buildroot}%{python3_sitearch}:%{buildroot}%{python3_sitelib}}"\\\
+  PYTHONDONTWRITEBYTECODE=1\\\
+  %__pytest}

python-rpm-macros.spec

@@ -1,6 +1,6 @@
 Name:           python-rpm-macros
 Version:        3.8
-Release:        7%{?dist}
+Release:        8%{?dist}
 Summary:        The common Python RPM macros
 
 # macros and lua: MIT, compileall2.py: PSFv2
@@ -107,6 +107,9 @@ install -m 644 compileall2.py %{buildroot}%{_rpmconfigdir}/redhat/
 
 
 %changelog
+* Mon May 11 2020 Miro Hrončok <mhroncok@redhat.com> - 3.8-8
+- Implement %%pytest
+
 * Thu May 07 2020 Miro Hrončok <mhroncok@redhat.com> - 3.8-7
 - Change %%__default_python3_pkgversion from 38 to 3.8
 

tests/test_evals.py

@@ -122,3 +122,13 @@ def test_py_provides_with_evr():
     assert 'Provides: python-foo = 123' in lines
     assert f'Provides: python{X_Y}-foo = 123' in lines
     assert len(lines) == 3
+
+
+def test_pytest_passes_options_naturally():
+    lines = rpm_eval('%pytest -k foo')
+    assert '/usr/bin/pytest -k foo' in lines[-1]
+
+
+def test_pytest_different_command():
+    lines = rpm_eval('%pytest', __pytest='pytest-3')
+    assert 'pytest-3' in lines[-1]