Add %tox macro to invoke tests

README.md

@@ -57,11 +57,24 @@ For example, if upstream suggests installing test dependencies with
 
 For projects that specify test requirements in their [tox] configuration,
 these can be added using the `-t` flag followed by the tox environment.
+The recommended tox environment (such as `py37` assuming the Fedora's Python version is 3.7)
+is available in the `%{toxenv}` macro.
 For example, if upstream suggests running the tests on Python 3.7 with `tox -e py37`,
 the test deps would be generated by:
 
     %generate_buildrequires
-    %pyproject_buildrequires -t py37
+    %pyproject_buildrequires -t %{toxenv}
+
+If upstream uses a custom derived environment, such as `py37-unit`, use:
+
+    %pyproject_buildrequires -t %{toxenv}-unit
+
+Or specify more environments if needed:
+
+    %pyproject_buildrequires -t %{toxenv}-unit,%{toxenv}-integration
+
+The `-t` option redefines `%{toxenv}` for further reuse.
+Use `%{default_toxenv}` to get the default value.
 
 Note that `-t` implies `-r`, because tox normally assumes the package is installed
 including all the runtime dependencies.
@@ -71,6 +84,49 @@ The `-t` option uses [tox-current-env]'s `--print-deps-only` behind the scenes.
 [tox]: https://tox.readthedocs.io/
 [tox-current-env]: https://github.com/fedora-python/tox-current-env/
 
+
+Running tox based tests
+-----------------------
+
+In case you want to run the tests as specified in [tox] configuration,
+you can use the `%tox` macro:
+
+    %check
+    %tox
+
+The macro:
+
+ - Always prepends `$PATH` with `%{buildroot}%{_bindir}`
+ - If not defined, sets `$PYTHONPATH` to `%{buildroot}%{python3_sitearch}:%{buildroot}%{python3_sitelib}`
+ - If not defined, sets `$TOX_TESTENV_PASSENV` to `*`
+ - Runs `tox` with `-q` (quiet), `--recreate` and `--current-env` (from [tox-current-env]) flags
+ - Implicitly uses the tox environment name stored in `%{toxenv}` - as overridden by `%pyproject_buildrequires -t`
+
+By using the `-e` flag, you can use a different tox environment(s):
+
+    %check
+    %tox
+    %if %{with integration_test}
+    %tox -e % {default_toxenv}-integration
+    %endif
+
+If you wish to provide custom `tox` flags or arguments, add them after `--`:
+
+    %tox -- --flag-for-tox
+
+If you wish to pass custom `posargs` to tox, use another `--`:
+
+    %tox -- --flag-for-tox -- --flag-for-posargs
+
+Or (note the two sequential `--`s):
+
+    %tox -- -- --flag-for-posargs
+
+**Warning:** This macro assumes you have used `%pyproject_buildrequires -t` in
+`%generate_buildrequires`. If not, you need to add:
+
+    BuildRequires: python3dist(tox-current-env)
+
 Limitations
 -----------
 
@@ -85,7 +141,7 @@ Some valid Python version specifiers are not supported.
 
 The `-x` flag does not yet support multiple (comma-separated) extras.
 
-The `-t` flag does not yet support a reasonable default.
+The `-t` flag does not yet support being used without a value.
 
 [PEP 517]: https://www.python.org/dev/peps/pep-0517/
 [PEP 518]: https://www.python.org/dev/peps/pep-0518/

macros.pyproject

@@ -17,7 +17,8 @@ if [ -d %{buildroot}%{python3_sitearch} ]; then
 fi
 }
 
-%toxenv py%{python3_version_nodots}
+%default_toxenv py%{python3_version_nodots}
+%toxenv %{default_toxenv}
 
 %pyproject_buildrequires(rx:t:) %{expand:\\\
 %{-t:%{expand:%global toxenv %{-t*}}}
@@ -31,3 +32,10 @@ if [ -f %{__python3} ]; then
   %{__python3} -I %{_rpmconfigdir}/redhat/pyproject_buildrequires.py %{?**}
 fi
 }
+
+%tox(e:) %{expand:\\\
+TOX_TESTENV_PASSENV="${TOX_TESTENV_PASSENV:-*}" \\
+PATH="%{buildroot}%{_bindir}:$PATH" \\
+PYTHONPATH="${PYTHONPATH:-%{buildroot}%{python3_sitearch}:%{buildroot}%{python3_sitelib}}" \\
+tox --current-env -q --recreate -e "%{-e:%{-e*}}%{!-e:%{toxenv}}" %{?*}
+}

pyproject-rpm-macros.spec

@@ -78,6 +78,7 @@ install -m 644 pyproject_buildrequires.py %{buildroot}%{_rpmconfigdir}/redhat/
 %changelog
 * Fri Jul 26 2019 Miro Hrončok <mhroncok@redhat.com> - 0-5
 - Allow to fetch test dependencies from tox
+- Add %%tox macro to invoke tests
 
 * Fri Jul 26 2019 Fedora Release Engineering <releng@fedoraproject.org> - 0-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild

tests/python-pluggy.spec

@@ -40,8 +40,7 @@ Summary:        %{summary}
 
 
 %check
-export PYTHONPATH=%{buildroot}%{python3_sitelib}
+%tox
-%{__python3} -m pytest
 
 
 %files -n python3-%{pypi_name}