diff --git a/tests/.gitignore b/tests/.gitignore
new file mode 100644
index 0000000..5732c0f
--- /dev/null
+++ b/tests/.gitignore
@@ -0,0 +1 @@
+__*__/
diff --git a/tests/pythontest.spec b/tests/pythontest.spec
new file mode 100644
index 0000000..32bb039
--- /dev/null
+++ b/tests/pythontest.spec
@@ -0,0 +1,78 @@
+%global basedir /opt/test/byte_compilation
+
+# We have 3 different ways of bytecompiling: for 3.9+, 3.4-3.8, and 2.7
+# Test with a representative of each.
+%global python36_sitelib /usr/lib/python3.6/site-packages
+%global python27_sitelib /usr/lib/python2.7/site-packages
+
+Name:           pythontest
+Version:        0
+Release:        0%{?dist}
+Summary:        ...
+License:        MIT
+BuildRequires:  python3-devel
+BuildRequires:  python3.6
+BuildRequires:  python2.7
+
+%description
+...
+
+%install
+mkdir -p %{buildroot}%{basedir}/directory/to/test/recursion
+
+echo "print()" > %{buildroot}%{basedir}/file.py
+echo "print()" > %{buildroot}%{basedir}/directory/to/test/recursion/file_in_dir.py
+
+%py_byte_compile %{python3} %{buildroot}%{basedir}/file.py
+%py_byte_compile %{python3} %{buildroot}%{basedir}/directory
+
+# Files in sitelib are compiled automatically by brp-python-bytecompile
+mkdir -p %{buildroot}%{python3_sitelib}/directory/
+echo "print()" > %{buildroot}%{python3_sitelib}/directory/file.py
+
+mkdir -p %{buildroot}%{python36_sitelib}/directory/
+echo "print()" > %{buildroot}%{python36_sitelib}/directory/file.py
+
+mkdir -p %{buildroot}%{python27_sitelib}/directory/
+echo "print()" > %{buildroot}%{python27_sitelib}/directory/file.py
+
+%check
+LOCATIONS="
+    %{buildroot}%{basedir}
+    %{buildroot}%{python3_sitelib}/directory/
+    %{buildroot}%{python36_sitelib}/directory/
+    %{buildroot}%{python27_sitelib}/directory/
+"
+
+# Count .py and .pyc files
+PY=$(find $LOCATIONS -name "*.py" | wc -l)
+PYC=$(find $LOCATIONS -name "*.py[co]" | wc -l)
+
+# We should have 5 .py files (3 for python3, one each for 3.6 & 2.7)
+test $PY -eq 5
+
+# Every .py file should be byte-compiled to two .pyc files (optimization level 0 and 1)
+# so we should have two times more .pyc files than .py files
+test $(expr $PY \* 2) -eq $PYC
+
+# In this case the .pyc files should be identical across omtimization levels
+# (they don't use docstrings and assert staements)
+# So they should be hardlinked; the number of distinct inodes should match the
+# number of source files. (Or be smaller, if the dupe detection is done
+# across all files.)
+
+INODES=$(stat --format %i $(find $LOCATIONS -name "*.py[co]") | sort -u | wc -l)
+test $PY -ge $INODES
+
+
+%files
+%pycached %{basedir}/file.py
+%pycached %{basedir}/directory/to/test/recursion/file_in_dir.py
+%pycached %{python3_sitelib}/directory/file.py
+%pycached %{python36_sitelib}/directory/file.py
+%{python27_sitelib}/directory/file.py*
+
+
+%changelog
+* Thu Jan 01 2015 Fedora Packager <nobody@fedoraproject.org> - 0-0
+- This changelog entry exists and is deliberately set in the past
diff --git a/tests/test_evals.py b/tests/test_evals.py
new file mode 100644
index 0000000..294faaa
--- /dev/null
+++ b/tests/test_evals.py
@@ -0,0 +1,892 @@
+import os
+import subprocess
+import platform
+import re
+import sys
+import textwrap
+
+import pytest
+
+X_Y = f'{sys.version_info[0]}.{sys.version_info[1]}'
+XY = f'{sys.version_info[0]}{sys.version_info[1]}'
+
+# Handy environment variable you can use to run the tests
+# with modified macros files. Multiple files should be
+# separated by colon.
+# You can use * if you escape it from your Shell:
+# TESTED_FILES='macros.*' pytest -v
+# Remember that some tests might need more macros files than just
+# the local ones. You might need to use:
+# TESTED_FILES='/usr/lib/rpm/macros:/usr/lib/rpm/platform/x86_64-linux/macros:macros.*'
+TESTED_FILES = os.getenv("TESTED_FILES", None)
+
+
+def rpm_eval(expression, fails=False, **kwargs):
+    cmd = ['rpmbuild']
+    if TESTED_FILES:
+        cmd += ['--macros', TESTED_FILES]
+    for var, value in kwargs.items():
+        if value is None:
+            cmd += ['--undefine', var]
+        else:
+            cmd += ['--define', f'{var} {value}']
+    cmd += ['--eval', expression]
+    cp = subprocess.run(cmd, text=True, env={**os.environ, 'LANG': 'C.utf-8'},
+                        stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    if fails:
+        assert cp.returncode != 0, cp.stdout
+    elif fails is not None:
+        assert cp.returncode == 0, cp.stdout
+    return cp.stdout.strip().splitlines()
+
+
+@pytest.fixture(scope="session")
+def lib():
+    lib_eval = rpm_eval("%_lib")[0]
+    if lib_eval == "%_lib" and TESTED_FILES:
+        raise ValueError(
+            "%_lib is not resolved to an actual value. "
+            "You may want to include /usr/lib/rpm/platform/x86_64-linux/macros to TESTED_FILES."
+        )
+    return lib_eval
+
+
+def get_alt_x_y():
+    """
+    Some tests require alternate Python version to be installed.
+    In order to allow any Python version (or none at all),
+    this function/fixture exists.
+    You can control the behavior by setting the $ALTERNATE_PYTHON_VERSION
+    environment variable to X.Y (e.g. 3.6) or SKIP.
+    The environment variable must be set.
+    """
+    env_name = "ALTERNATE_PYTHON_VERSION"
+    alternate_python_version = os.getenv(env_name, "")
+    if alternate_python_version.upper() == "SKIP":
+        pytest.skip(f"${env_name} set to SKIP")
+    if not alternate_python_version:
+        raise ValueError(f"${env_name} must be set, "
+                         f"set it to SKIP if you want to skip tests that "
+                         f"require alternate Python version.")
+    if not re.match(r"^\d+\.\d+$", alternate_python_version):
+        raise ValueError(f"${env_name} must be X.Y")
+    return alternate_python_version
+
+
+def get_alt_xy():
+    """
+    Same as get_alt_x_y() but without a dot
+    """
+    return get_alt_x_y().replace(".", "")
+
+
+# We don't use decorators, to be able to call the functions directly
+alt_x_y = pytest.fixture(scope="session")(get_alt_x_y)
+alt_xy = pytest.fixture(scope="session")(get_alt_xy)
+
+
+# https://fedoraproject.org/wiki/Changes/PythonSafePath
+def safe_path_flag(x_y):
+    return 'P' if tuple(int(i) for i in x_y.split('.')) >= (3, 11) else ''
+
+
+def shell_stdout(script):
+    return subprocess.check_output(script,
+                                   env={**os.environ, 'LANG': 'C.utf-8'},
+                                   text=True,
+                                   shell=True).rstrip()
+
+
+@pytest.mark.parametrize('macro', ['%__python3', '%python3'])
+def test_python3(macro):
+    assert rpm_eval(macro) == ['/usr/bin/python3']
+
+
+@pytest.mark.parametrize('macro', ['%__python3', '%python3'])
+@pytest.mark.parametrize('pkgversion', ['3', '3.9', '3.12'])
+def test_python3_with_pkgversion(macro, pkgversion):
+    assert rpm_eval(macro, python3_pkgversion=pkgversion) == [f'/usr/bin/python{pkgversion}']
+
+
+@pytest.mark.parametrize('argument, result', [
+    ('a', 'a'),
+    ('a-a', 'a-a'),
+    ('a_a', 'a-a'),
+    ('a.a', 'a-a'),
+    ('a---a', 'a-a'),
+    ('a-_-a', 'a-a'),
+    ('a-_-a', 'a-a'),
+    ('a[b]', 'a[b]'),
+    ('Aha[Boom]', 'aha[boom]'),
+    ('a.a[b.b]', 'a-a[b-b]'),
+])
+def test_pydist_name(argument, result):
+    assert rpm_eval(f'%py_dist_name {argument}') == [result]
+
+
+def test_py2_dist():
+    assert rpm_eval(f'%py2_dist Aha[Boom] a') == ['python2dist(aha[boom]) python2dist(a)']
+
+
+def test_py3_dist():
+    assert rpm_eval(f'%py3_dist Aha[Boom] a') == ['python3dist(aha[boom]) python3dist(a)']
+
+
+def test_py3_dist_with_python3_pkgversion_redefined(alt_x_y):
+    assert rpm_eval(f'%py3_dist Aha[Boom] a', python3_pkgversion=alt_x_y) == [f'python{alt_x_y}dist(aha[boom]) python{alt_x_y}dist(a)']
+
+
+def test_python_provide_python():
+    assert rpm_eval('%python_provide python-foo') == []
+
+
+def test_python_provide_python3():
+    lines = rpm_eval('%python_provide python3-foo', version='6', release='1.fc66')
+    assert 'Obsoletes: python-foo < 6-1.fc66' in lines
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert f'Provides: python{X_Y}-foo = 6-1.fc66' in lines
+    assert len(lines) == 3
+
+
+def test_python_provide_python3_epoched():
+    lines = rpm_eval('%python_provide python3-foo', epoch='1', version='6', release='1.fc66')
+    assert 'Obsoletes: python-foo < 1:6-1.fc66' in lines
+    assert 'Provides: python-foo = 1:6-1.fc66' in lines
+    assert f'Provides: python{X_Y}-foo = 1:6-1.fc66' in lines
+    assert len(lines) == 3
+
+
+def test_python_provide_python3X():
+    lines = rpm_eval(f'%python_provide python{X_Y}-foo', version='6', release='1.fc66')
+    assert 'Obsoletes: python-foo < 6-1.fc66' in lines
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert 'Provides: python3-foo = 6-1.fc66' in lines
+    assert len(lines) == 3
+
+
+def test_python_provide_python3X_epoched():
+    lines = rpm_eval(f'%python_provide python{X_Y}-foo', epoch='1', version='6', release='1.fc66')
+    assert 'Obsoletes: python-foo < 1:6-1.fc66' in lines
+    assert 'Provides: python-foo = 1:6-1.fc66' in lines
+    assert 'Provides: python3-foo = 1:6-1.fc66' in lines
+    assert len(lines) == 3
+
+
+def test_python_provide_doubleuse():
+    lines = rpm_eval('%{python_provide python3-foo}%{python_provide python3-foo}',
+                     version='6', release='1.fc66')
+    assert 'Obsoletes: python-foo < 6-1.fc66' in lines
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert f'Provides: python{X_Y}-foo = 6-1.fc66' in lines
+    assert len(lines) == 6
+    assert len(set(lines)) == 3
+
+
+@pytest.mark.parametrize('rhel', [None, 10])
+def test_py_provides_python(rhel):
+    lines = rpm_eval('%py_provides python-foo', version='6', release='1.fc66', rhel=rhel)
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert len(lines) == 1
+
+
+@pytest.mark.parametrize('rhel', [None, 12])
+def test_py_provides_whatever(rhel):
+    lines = rpm_eval('%py_provides whatever', version='6', release='1.fc66', rhel=rhel)
+    assert 'Provides: whatever = 6-1.fc66' in lines
+    assert len(lines) == 1
+
+
+@pytest.mark.parametrize('rhel', [None, 9])
+def test_py_provides_python3(rhel):
+    lines = rpm_eval('%py_provides python3-foo', version='6', release='1.fc66', rhel=rhel)
+    assert 'Provides: python3-foo = 6-1.fc66' in lines
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert f'Provides: python{X_Y}-foo = 6-1.fc66' in lines
+    if rhel:
+        assert f'Obsoletes: python{X_Y}-foo < 6-1.fc66' in lines
+        assert len(lines) == 4
+    else:
+        assert len(lines) == 3
+
+
+@pytest.mark.parametrize('rhel', [None, 9])
+def test_py_provides_python3_with_isa(rhel):
+    lines = rpm_eval('%py_provides python3-foo(x86_64)', version='6', release='1.fc66', rhel=rhel)
+    assert 'Provides: python3-foo(x86_64) = 6-1.fc66' in lines
+    assert 'Provides: python-foo(x86_64) = 6-1.fc66' in lines
+    assert f'Provides: python{X_Y}-foo(x86_64) = 6-1.fc66' in lines
+    assert f'Obsoletes: python{X_Y}-foo(x86_64) < 6-1.fc66' not in lines
+    assert len(lines) == 3
+
+
+@pytest.mark.parametrize('rhel', [None, 13])
+def test_py_provides_python3_epoched(rhel):
+    lines = rpm_eval('%py_provides python3-foo', epoch='1', version='6', release='1.fc66', rhel=rhel)
+    assert 'Provides: python3-foo = 1:6-1.fc66' in lines
+    assert 'Provides: python-foo = 1:6-1.fc66' in lines
+    assert f'Provides: python{X_Y}-foo = 1:6-1.fc66' in lines
+    if rhel:
+        assert f'Obsoletes: python{X_Y}-foo < 1:6-1.fc66' in lines
+        assert len(lines) == 4
+    else:
+        assert len(lines) == 3
+
+
+@pytest.mark.parametrize('rhel', [None, 13])
+def test_py_provides_python3X(rhel):
+    lines = rpm_eval(f'%py_provides python{X_Y}-foo', version='6', release='1.fc66', rhel=rhel)
+    assert f'Provides: python{X_Y}-foo = 6-1.fc66' in lines
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert 'Provides: python3-foo = 6-1.fc66' in lines
+    assert len(lines) == 3
+
+
+@pytest.mark.parametrize('rhel', [None, 27])
+def test_py_provides_python3X_epoched(rhel):
+    lines = rpm_eval(f'%py_provides python{X_Y}-foo', epoch='1', version='6', release='1.fc66', rhel=rhel)
+    assert f'Provides: python{X_Y}-foo = 1:6-1.fc66' in lines
+    assert 'Provides: python-foo = 1:6-1.fc66' in lines
+    assert 'Provides: python3-foo = 1:6-1.fc66' in lines
+    assert len(lines) == 3
+
+
+@pytest.mark.parametrize('rhel', [None, 2])
+def test_py_provides_doubleuse(rhel):
+    lines = rpm_eval('%{py_provides python3-foo}%{py_provides python3-foo}',
+                     version='6', release='1.fc66', rhel=rhel)
+    assert 'Provides: python3-foo = 6-1.fc66' in lines
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert f'Provides: python{X_Y}-foo = 6-1.fc66' in lines
+    if rhel:
+        assert f'Obsoletes: python{X_Y}-foo < 6-1.fc66' in lines
+        assert len(lines) == 8
+        assert len(set(lines)) == 4
+    else:
+        assert len(lines) == 6
+        assert len(set(lines)) == 3
+
+
+@pytest.mark.parametrize('rhel', [None, 2])
+def test_py_provides_with_evr(rhel):
+    lines = rpm_eval('%py_provides python3-foo 123',
+                     version='6', release='1.fc66', rhel=rhel)
+    assert 'Provides: python3-foo = 123' in lines
+    assert 'Provides: python-foo = 123' in lines
+    assert f'Provides: python{X_Y}-foo = 123' in lines
+    if rhel:
+        assert f'Obsoletes: python{X_Y}-foo < 123' in lines
+        assert len(lines) == 4
+    else:
+        assert len(lines) == 3
+
+
+def test_python_wheel_pkg_prefix():
+    assert rpm_eval('%python_wheel_pkg_prefix', fedora='44', rhel=None, eln=None) == ['python']
+    assert rpm_eval('%python_wheel_pkg_prefix', fedora='44', rhel=None, eln=None, python3_pkgversion='3.9') == ['python']
+    assert rpm_eval('%python_wheel_pkg_prefix', fedora=None, rhel='1', eln='1') == ['python']
+    assert rpm_eval('%python_wheel_pkg_prefix', fedora=None, rhel='1', eln=None) == ['python3']
+    assert rpm_eval('%python_wheel_pkg_prefix', fedora=None, rhel='1', eln=None, python3_pkgversion='3.10') == ['python3.10']
+    assert rpm_eval('%python_wheel_pkg_prefix', fedora=None, rhel='1', eln=None, python3_pkgversion='3.11') == ['python3.11']
+
+
+def test_python_wheel_dir():
+    assert rpm_eval('%python_wheel_dir', fedora='44', rhel=None, eln=None) == ['/usr/share/python-wheels']
+    assert rpm_eval('%python_wheel_dir', fedora='44', rhel=None, eln=None, python3_pkgversion='3.9') == ['/usr/share/python-wheels']
+    assert rpm_eval('%python_wheel_dir', fedora=None, rhel='1', eln='1') == ['/usr/share/python-wheels']
+    assert rpm_eval('%python_wheel_dir', fedora=None, rhel='1', eln=None) == ['/usr/share/python3-wheels']
+    assert rpm_eval('%python_wheel_dir', fedora=None, rhel='1', eln=None, python3_pkgversion='3.10') == ['/usr/share/python3.10-wheels']
+    assert rpm_eval('%python_wheel_dir', fedora=None, rhel='1', eln=None, python3_pkgversion='3.11') == ['/usr/share/python3.11-wheels']
+
+
+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]
+
+
+def test_pytest_command_suffix():
+    lines = rpm_eval('%pytest -v')
+    assert '/usr/bin/pytest -v' in lines[-1]
+
+# this test does not require alternate Pythons to be installed
+@pytest.mark.parametrize('version', ['3.6', '3.7', '3.12'])
+def test_pytest_command_suffix_alternate_pkgversion(version):
+    lines = rpm_eval('%pytest -v', python3_pkgversion=version, python3_version=version)
+    assert f'/usr/bin/pytest-{version} -v' in lines[-1]
+
+
+def test_pytest_sets_pytest_xdist_auto_num_workers():
+    lines = rpm_eval('%pytest', _smp_build_ncpus=2)
+    assert 'PYTEST_XDIST_AUTO_NUM_WORKERS=2' in '\n'.join(lines)
+
+
+def test_pytest_undefined_addopts_are_not_set():
+    lines = rpm_eval('%pytest', __pytest_addopts=None)
+    assert 'PYTEST_ADDOPTS' not in '\n'.join(lines)
+
+
+def test_pytest_defined_addopts_are_set():
+    lines = rpm_eval('%pytest', __pytest_addopts="--ignore=stuff")
+    assert 'PYTEST_ADDOPTS="${PYTEST_ADDOPTS:-} --ignore=stuff"' in '\n'.join(lines)
+
+
+@pytest.mark.parametrize('__pytest_addopts', ['--macronized-option', 'x y z', None])
+def test_pytest_addopts_preserves_envvar(__pytest_addopts):
+    # this is the line a packager might put in the spec file before running %pytest:
+    spec_line = 'export PYTEST_ADDOPTS="--exported-option1 --exported-option2"'
+
+    # instead of actually running /usr/bin/pytest,
+    # we run a small shell script that echoes the tested value for inspection
+    lines = rpm_eval('%pytest', __pytest_addopts=__pytest_addopts,
+                     __pytest="sh -c 'echo $PYTEST_ADDOPTS'")
+
+    echoed = shell_stdout('\n'.join([spec_line] + lines))
+
+    # assert all values were echoed
+    assert '--exported-option1' in echoed
+    assert '--exported-option2' in echoed
+    if __pytest_addopts is not None:
+        assert __pytest_addopts in echoed
+
+    # assert the options are separated
+    assert 'option--' not in echoed
+    assert 'z--' not in echoed
+
+
+@pytest.mark.parametrize('__pytest_addopts', ['-X', None])
+def test_py3_test_envvars(lib, __pytest_addopts):
+    lines = rpm_eval('%{py3_test_envvars}\\\n%{python3} -m unittest',
+                     buildroot='BUILDROOT',
+                     _smp_build_ncpus='3',
+                     __pytest_addopts=__pytest_addopts)
+    assert all(l.endswith('\\') for l in lines[:-1])
+    stripped_lines = [l.strip(' \\') for l in lines]
+    sitearch = f'BUILDROOT/usr/{lib}/python{X_Y}/site-packages'
+    sitelib = f'BUILDROOT/usr/lib/python{X_Y}/site-packages'
+    assert f'PYTHONPATH="${{PYTHONPATH:-{sitearch}:{sitelib}}}"' in stripped_lines
+    assert 'PATH="BUILDROOT/usr/bin:$PATH"' in stripped_lines
+    assert 'CFLAGS="${CFLAGS:-${RPM_OPT_FLAGS}}" LDFLAGS="${LDFLAGS:-${RPM_LD_FLAGS}}"' in stripped_lines
+    assert 'PYTHONDONTWRITEBYTECODE=1' in stripped_lines
+    assert 'PYTEST_XDIST_AUTO_NUM_WORKERS=3' in stripped_lines
+    if __pytest_addopts:
+        assert f'PYTEST_ADDOPTS="${{PYTEST_ADDOPTS:-}} {__pytest_addopts}"' in stripped_lines
+    else:
+        assert 'PYTEST_ADDOPTS' not in ''.join(lines)
+    assert stripped_lines[-1] == '/usr/bin/python3 -m unittest'
+
+
+def test_pypi_source_default_name():
+    urls = rpm_eval('%pypi_source',
+                    name='foo', version='6')
+    assert urls == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz']
+
+
+def test_pypi_source_default_srcname():
+    urls = rpm_eval('%pypi_source',
+                    name='python-foo', srcname='foo', version='6')
+    assert urls == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz']
+
+
+def test_pypi_source_default_pypi_name():
+    urls = rpm_eval('%pypi_source',
+                    name='python-foo', pypi_name='foo', version='6')
+    assert urls == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz']
+
+
+def test_pypi_source_default_name_uppercase():
+    urls = rpm_eval('%pypi_source',
+                    name='Foo', version='6')
+    assert urls == ['https://files.pythonhosted.org/packages/source/F/Foo/Foo-6.tar.gz']
+
+
+def test_pypi_source_provided_name():
+    urls = rpm_eval('%pypi_source foo',
+                    name='python-bar', pypi_name='bar', version='6')
+    assert urls == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz']
+
+
+def test_pypi_source_provided_name_version():
+    urls = rpm_eval('%pypi_source foo 6',
+                    name='python-bar', pypi_name='bar', version='3')
+    assert urls == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz']
+
+
+def test_pypi_source_provided_name_version_ext():
+    url = rpm_eval('%pypi_source foo 6 zip',
+                   name='python-bar', pypi_name='bar', version='3')
+    assert url == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6.zip']
+
+
+def test_pypi_source_prerelease():
+    urls = rpm_eval('%pypi_source',
+                    name='python-foo', pypi_name='foo', version='6~b2')
+    assert urls == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6b2.tar.gz']
+
+
+def test_pypi_source_explicit_tilde():
+    urls = rpm_eval('%pypi_source foo 6~6',
+                    name='python-foo', pypi_name='foo', version='6')
+    assert urls == ['https://files.pythonhosted.org/packages/source/f/foo/foo-6~6.tar.gz']
+
+
+def test_py3_shebang_fix():
+    cmd = rpm_eval('%py3_shebang_fix arg1 arg2 arg3')[-1].strip()
+    assert cmd == '/usr/bin/python3 -B /usr/lib/rpm/redhat/pathfix.py -pni /usr/bin/python3 $shebang_flags arg1 arg2 arg3'
+
+
+def test_py3_shebang_fix_default_shebang_flags():
+    lines = rpm_eval('%py3_shebang_fix arg1 arg2')
+    lines[-1] = 'echo $shebang_flags'
+    assert shell_stdout('\n'.join(lines)) == f'-kas{safe_path_flag(X_Y)}'
+
+
+def test_py3_shebang_fix_custom_shebang_flags():
+    lines = rpm_eval('%py3_shebang_fix arg1 arg2', py3_shebang_flags='Es')
+    lines[-1] = 'echo $shebang_flags'
+    assert shell_stdout('\n'.join(lines)) == '-kaEs'
+
+
+@pytest.mark.parametrize('_py3_shebang_s', [None, '%{nil}'])
+def test_py3_shebang_fix_undefined_py3_shebang_s(_py3_shebang_s):
+    lines = rpm_eval('%py3_shebang_fix arg1 arg2', _py3_shebang_s=_py3_shebang_s)
+    lines[-1] = 'echo $shebang_flags'
+    expected = f'-ka{safe_path_flag(X_Y)}' if safe_path_flag(X_Y) else '-k'
+    assert shell_stdout('\n'.join(lines)) == expected
+
+
+@pytest.mark.parametrize('_py3_shebang_P', [None, '%{nil}'])
+def test_py3_shebang_fix_undefined_py3_shebang_P(_py3_shebang_P):
+    lines = rpm_eval('%py3_shebang_fix arg1 arg2', _py3_shebang_P=_py3_shebang_P)
+    lines[-1] = 'echo $shebang_flags'
+    assert shell_stdout('\n'.join(lines)) == '-kas'
+
+
+@pytest.mark.parametrize('_py3_shebang_s', [None, '%{nil}'])
+@pytest.mark.parametrize('_py3_shebang_P', [None, '%{nil}'])
+def test_py3_shebang_fix_undefined_py3_shebang_sP(_py3_shebang_s, _py3_shebang_P):
+    lines = rpm_eval('%py3_shebang_fix arg1 arg2',
+                     _py3_shebang_s=_py3_shebang_s,
+                     _py3_shebang_P=_py3_shebang_P)
+    lines[-1] = 'echo $shebang_flags'
+    assert shell_stdout('\n'.join(lines)) == '-k'
+
+
+@pytest.mark.parametrize('flags', [None, '%{nil}'])
+def test_py3_shebang_fix_no_shebang_flags(flags):
+    lines = rpm_eval('%py3_shebang_fix arg1 arg2', py3_shebang_flags=flags)
+    lines[-1] = 'echo $shebang_flags'
+    assert shell_stdout('\n'.join(lines)) == '-k'
+
+
+def test_py_shebang_fix_custom_python():
+    cmd = rpm_eval('%py_shebang_fix arg1 arg2 arg3', __python='/usr/bin/pypy')[-1].strip()
+    assert cmd == '/usr/bin/pypy -B /usr/lib/rpm/redhat/pathfix.py -pni /usr/bin/pypy $shebang_flags arg1 arg2 arg3'
+
+
+def test_pycached_in_sitelib():
+    lines = rpm_eval('%pycached %{python3_sitelib}/foo*.py')
+    assert lines == [
+        f'/usr/lib/python{X_Y}/site-packages/foo*.py',
+        f'/usr/lib/python{X_Y}/site-packages/__pycache__/foo*.cpython-{XY}{{,.opt-?}}.pyc'
+    ]
+
+
+def test_pycached_in_sitearch(lib):
+    lines = rpm_eval('%pycached %{python3_sitearch}/foo*.py')
+    assert lines == [
+        f'/usr/{lib}/python{X_Y}/site-packages/foo*.py',
+        f'/usr/{lib}/python{X_Y}/site-packages/__pycache__/foo*.cpython-{XY}{{,.opt-?}}.pyc'
+    ]
+
+
+# this test does not require alternate Pythons to be installed
+@pytest.mark.parametrize('version', ['3.6', '3.7', '3.12'])
+def test_pycached_with_alternate_version(version):
+    version_nodot = version.replace('.', '')
+    lines = rpm_eval(f'%pycached /usr/lib/python{version}/site-packages/foo*.py')
+    assert lines == [
+        f'/usr/lib/python{version}/site-packages/foo*.py',
+        f'/usr/lib/python{version}/site-packages/__pycache__/foo*.cpython-{version_nodot}{{,.opt-?}}.pyc'
+    ]
+
+
+def test_pycached_in_custom_dir():
+    lines = rpm_eval('%pycached /bar/foo*.py')
+    assert lines == [
+        '/bar/foo*.py',
+        '/bar/__pycache__/foo*.cpython-3*{,.opt-?}.pyc'
+    ]
+
+
+def test_pycached_with_exclude():
+    lines = rpm_eval('%pycached %exclude %{python3_sitelib}/foo*.py')
+    assert lines == [
+        f'%exclude /usr/lib/python{X_Y}/site-packages/foo*.py',
+        f'%exclude /usr/lib/python{X_Y}/site-packages/__pycache__/foo*.cpython-{XY}{{,.opt-?}}.pyc'
+    ]
+
+
+def test_pycached_fails_with_extension_glob():
+    lines = rpm_eval('%pycached %{python3_sitelib}/foo.py*', fails=True)
+    assert lines[0] == 'error: %pycached can only be used with paths explicitly ending with .py'
+
+
+def test_python_extras_subpkg_i():
+    lines = rpm_eval('%python_extras_subpkg -n python3-setuptools_scm -i %{python3_sitelib}/*.egg-info toml yaml',
+                     version='6', release='7')
+    expected = textwrap.dedent(f"""
+        %package -n python3-setuptools_scm+toml
+        Summary: Metapackage for python3-setuptools_scm: toml extras
+        Requires: python3-setuptools_scm = 6-7
+        %description -n python3-setuptools_scm+toml
+        This is a metapackage bringing in toml extras requires for
+        python3-setuptools_scm.
+        It makes sure the dependencies are installed.
+
+        %files -n python3-setuptools_scm+toml
+        %ghost /usr/lib/python{X_Y}/site-packages/*.egg-info
+
+        %package -n python3-setuptools_scm+yaml
+        Summary: Metapackage for python3-setuptools_scm: yaml extras
+        Requires: python3-setuptools_scm = 6-7
+        %description -n python3-setuptools_scm+yaml
+        This is a metapackage bringing in yaml extras requires for
+        python3-setuptools_scm.
+        It makes sure the dependencies are installed.
+
+        %files -n python3-setuptools_scm+yaml
+        %ghost /usr/lib/python{X_Y}/site-packages/*.egg-info
+        """).lstrip().splitlines()
+    assert lines == expected
+
+
+def test_python_extras_subpkg_f():
+    lines = rpm_eval('%python_extras_subpkg -n python3-setuptools_scm -f ghost_filelist toml yaml',
+                     version='6', release='7')
+    expected = textwrap.dedent(f"""
+        %package -n python3-setuptools_scm+toml
+        Summary: Metapackage for python3-setuptools_scm: toml extras
+        Requires: python3-setuptools_scm = 6-7
+        %description -n python3-setuptools_scm+toml
+        This is a metapackage bringing in toml extras requires for
+        python3-setuptools_scm.
+        It makes sure the dependencies are installed.
+
+        %files -n python3-setuptools_scm+toml -f ghost_filelist
+
+        %package -n python3-setuptools_scm+yaml
+        Summary: Metapackage for python3-setuptools_scm: yaml extras
+        Requires: python3-setuptools_scm = 6-7
+        %description -n python3-setuptools_scm+yaml
+        This is a metapackage bringing in yaml extras requires for
+        python3-setuptools_scm.
+        It makes sure the dependencies are installed.
+
+        %files -n python3-setuptools_scm+yaml -f ghost_filelist
+        """).lstrip().splitlines()
+    assert lines == expected
+
+
+def test_python_extras_subpkg_F():
+    lines = rpm_eval('%python_extras_subpkg -n python3-setuptools_scm -F toml yaml',
+                     version='6', release='7')
+    expected = textwrap.dedent(f"""
+        %package -n python3-setuptools_scm+toml
+        Summary: Metapackage for python3-setuptools_scm: toml extras
+        Requires: python3-setuptools_scm = 6-7
+        %description -n python3-setuptools_scm+toml
+        This is a metapackage bringing in toml extras requires for
+        python3-setuptools_scm.
+        It makes sure the dependencies are installed.
+
+
+
+        %package -n python3-setuptools_scm+yaml
+        Summary: Metapackage for python3-setuptools_scm: yaml extras
+        Requires: python3-setuptools_scm = 6-7
+        %description -n python3-setuptools_scm+yaml
+        This is a metapackage bringing in yaml extras requires for
+        python3-setuptools_scm.
+        It makes sure the dependencies are installed.
+        """).lstrip().splitlines()
+    assert lines == expected
+
+
+def test_python_extras_subpkg_underscores():
+    lines = rpm_eval('%python_extras_subpkg -n python3-webscrapbook -F adhoc_ssl',
+                     version='0.33.3', release='1.fc33')
+    expected = textwrap.dedent(f"""
+        %package -n python3-webscrapbook+adhoc_ssl
+        Summary: Metapackage for python3-webscrapbook: adhoc_ssl extras
+        Requires: python3-webscrapbook = 0.33.3-1.fc33
+        %description -n python3-webscrapbook+adhoc_ssl
+        This is a metapackage bringing in adhoc_ssl extras requires for
+        python3-webscrapbook.
+        It makes sure the dependencies are installed.
+        """).lstrip().splitlines()
+    assert lines == expected
+
+
+@pytest.mark.parametrize('sep', [pytest.param(('', ' ', ' ', ''), id='spaces'),
+                                 pytest.param(('', ',', ',', ''), id='commas'),
+                                 pytest.param(('', ',', ',', ','), id='commas-trailing'),
+                                 pytest.param((',', ',', ',', ''), id='commas-leading'),
+                                 pytest.param((',', ',', ',', ','), id='commas-trailing-leading'),
+                                 pytest.param(('', ',', ' ', ''), id='mixture'),
+                                 pytest.param(('  ', '   ', '\t\t, ', '\t'), id='chaotic-good'),
+                                 pytest.param(('', '\t ,, \t\r ', ',,\t  , ', ',,'), id='chaotic-evil')])
+def test_python_extras_subpkg_arg_separators(sep):
+    lines = rpm_eval('%python_extras_subpkg -n python3-hypothesis -F {}cli{}ghostwriter{}pytz{}'.format(*sep),
+                     version='6.6.0', release='1.fc35')
+    expected = textwrap.dedent(f"""
+        %package -n python3-hypothesis+cli
+        Summary: Metapackage for python3-hypothesis: cli extras
+        Requires: python3-hypothesis = 6.6.0-1.fc35
+        %description -n python3-hypothesis+cli
+        This is a metapackage bringing in cli extras requires for python3-hypothesis.
+        It makes sure the dependencies are installed.
+
+
+
+        %package -n python3-hypothesis+ghostwriter
+        Summary: Metapackage for python3-hypothesis: ghostwriter extras
+        Requires: python3-hypothesis = 6.6.0-1.fc35
+        %description -n python3-hypothesis+ghostwriter
+        This is a metapackage bringing in ghostwriter extras requires for
+        python3-hypothesis.
+        It makes sure the dependencies are installed.
+
+
+
+        %package -n python3-hypothesis+pytz
+        Summary: Metapackage for python3-hypothesis: pytz extras
+        Requires: python3-hypothesis = 6.6.0-1.fc35
+        %description -n python3-hypothesis+pytz
+        This is a metapackage bringing in pytz extras requires for python3-hypothesis.
+        It makes sure the dependencies are installed.
+        """).lstrip().splitlines()
+    assert lines == expected
+
+
+@pytest.mark.parametrize('basename_len', [1, 10, 30, 45, 78])
+@pytest.mark.parametrize('extra_len', [1, 13, 28, 52, 78])
+def test_python_extras_subpkg_description_wrapping(basename_len, extra_len):
+    basename = 'x' * basename_len
+    extra = 'y' * extra_len
+    lines = rpm_eval(f'%python_extras_subpkg -n {basename} -F {extra}',
+                     version='6', release='7')
+    for idx, line in enumerate(lines):
+        if line.startswith('%description'):
+            start = idx + 1
+    lines = lines[start:]
+    assert all(len(l) < 80 for l in lines)
+    assert len(lines) < 6
+    if len(" ".join(lines[:-1])) < 80:
+        assert len(lines) == 2
+    expected_singleline = (f"This is a metapackage bringing in {extra} extras "
+                           f"requires for {basename}. "
+                           f"It makes sure the dependencies are installed.")
+    description_singleline = " ".join(lines)
+    assert description_singleline == expected_singleline
+
+
+unversioned_macros = pytest.mark.parametrize('macro', [
+    '%__python',
+    '%python',
+    '%python_version',
+    '%python_version_nodots',
+    '%python_sitelib',
+    '%python_sitearch',
+    '%python_platform',
+    '%python_platform_triplet',
+    '%python_ext_suffix',
+    '%python_cache_tag',
+    '%py_shebang_fix',
+    '%py_build',
+    '%py_build_egg',
+    '%py_build_wheel',
+    '%py_install',
+    '%py_install_egg',
+    '%py_install_wheel',
+    '%py_check_import',
+    '%py_test_envvars',
+])
+
+
+@unversioned_macros
+def test_unversioned_python_errors(macro):
+    lines = rpm_eval(macro, fails=True)
+    assert lines[0] == (
+        'error: attempt to use unversioned python, '
+        'define %__python to /usr/bin/python2 or /usr/bin/python3 explicitly'
+    )
+    # when the macros are %global, the error is longer
+    # we deliberately allow this extra line to be optional
+    if len(lines) > 1:
+        # the failed macro is not unnecessarily our tested macro
+        pattern = r'error: Macro %\S+ failed to expand'
+        assert re.match(pattern, lines[1])
+    # but there should be no more lines
+    assert len(lines) < 3
+
+
+@unversioned_macros
+def test_unversioned_python_works_when_defined(macro):
+    macro3 = macro.replace('python', 'python3').replace('py_', 'py3_')
+    assert rpm_eval(macro, __python='/usr/bin/python3') == rpm_eval(macro3)
+
+
+# we could rework the test for multiple architectures, but the Fedora CI currently only runs on x86_64
+x86_64_only = pytest.mark.skipif(platform.machine() != "x86_64", reason="works on x86_64 only")
+
+
+@x86_64_only
+def test_platform_triplet():
+    assert rpm_eval("%python3_platform_triplet") == ["x86_64-linux-gnu"]
+
+
+@x86_64_only
+def test_ext_suffix():
+    assert rpm_eval("%python3_ext_suffix") == [f".cpython-{XY}-x86_64-linux-gnu.so"]
+
+
+def test_cache_tag():
+    assert rpm_eval("%python3_cache_tag") == [f"cpython-{XY}"]
+
+
+def test_cache_tag_alternate_python(alt_x_y, alt_xy):
+    assert rpm_eval("%python_cache_tag", __python=f"/usr/bin/python{alt_x_y}") == [f"cpython-{alt_xy}"]
+
+
+def test_cache_tag_alternate_python3(alt_x_y, alt_xy):
+    assert rpm_eval("%python3_cache_tag", __python3=f"/usr/bin/python{alt_x_y}") == [f"cpython-{alt_xy}"]
+
+
+def test_python_sitelib_value_python3():
+    macro = '%python_sitelib'
+    assert rpm_eval(macro, __python='%__python3') == [f'/usr/lib/python{X_Y}/site-packages']
+
+
+def test_python_sitelib_value_alternate_python(alt_x_y):
+    macro = '%python_sitelib'
+    assert rpm_eval(macro, __python=f'/usr/bin/python{alt_x_y}') == [f'/usr/lib/python{alt_x_y}/site-packages']
+
+
+def test_python3_sitelib_value_default():
+    macro = '%python3_sitelib'
+    assert rpm_eval(macro) == [f'/usr/lib/python{X_Y}/site-packages']
+
+
+def test_python3_sitelib_value_alternate_python(alt_x_y):
+    macro = '%python3_sitelib'
+    assert (rpm_eval(macro, __python3=f'/usr/bin/python{alt_x_y}') ==
+            rpm_eval(macro, python3_pkgversion=alt_x_y) ==
+            [f'/usr/lib/python{alt_x_y}/site-packages'])
+
+
+def test_python3_sitelib_value_alternate_prefix():
+    macro = '%python3_sitelib'
+    assert rpm_eval(macro, _prefix='/app') == [f'/app/lib/python{X_Y}/site-packages']
+
+
+def test_python_sitearch_value_python3(lib):
+    macro = '%python_sitearch'
+    assert rpm_eval(macro, __python='%__python3') == [f'/usr/{lib}/python{X_Y}/site-packages']
+
+
+def test_python_sitearch_value_alternate_python(lib, alt_x_y):
+    macro = '%python_sitearch'
+    assert rpm_eval(macro, __python=f'/usr/bin/python{alt_x_y}') == [f'/usr/{lib}/python{alt_x_y}/site-packages']
+
+
+def test_python3_sitearch_value_default(lib):
+    macro = '%python3_sitearch'
+    assert rpm_eval(macro) == [f'/usr/{lib}/python{X_Y}/site-packages']
+
+
+def test_python3_sitearch_value_alternate_python(lib, alt_x_y):
+    macro = '%python3_sitearch'
+    assert (rpm_eval(macro, __python3=f'/usr/bin/python{alt_x_y}') ==
+            rpm_eval(macro, python3_pkgversion=alt_x_y) ==
+            [f'/usr/{lib}/python{alt_x_y}/site-packages'])
+
+
+def test_python3_sitearch_value_alternate_prefix(lib):
+    macro = '%python3_sitearch'
+    assert rpm_eval(macro, _prefix='/app') == [f'/app/{lib}/python{X_Y}/site-packages']
+
+
+@pytest.mark.parametrize(
+    'args, expected_args',
+    [
+        ('six', 'six'),
+        ('-f foo.txt', '-f foo.txt'),
+        ('-t -f foo.txt six, seven', '-t -f foo.txt six, seven'),
+        ('-e "foo*" -f foo.txt six, seven', '-e "foo*" -f foo.txt six, seven'),
+        ('six.quarter six.half,, SIX', 'six.quarter six.half,, SIX'),
+        ('-f foo.txt six\nsix.half\nSIX', '-f foo.txt six six.half SIX'),
+        ('six \\ -e six.half', 'six -e six.half'),
+    ]
+)
+@pytest.mark.parametrize('__python3',
+                         [None,
+                          f'/usr/bin/python{X_Y}',
+                          '/usr/bin/pythonX.Y'])
+def test_py3_check_import(args, expected_args, __python3, lib):
+    x_y = X_Y
+    macros = {
+        'buildroot': 'BUILDROOT',
+        '_rpmconfigdir': 'RPMCONFIGDIR',
+    }
+    if __python3 is not None:
+        if 'X.Y' in __python3:
+            __python3 = __python3.replace('X.Y', get_alt_x_y())
+        macros['__python3'] = __python3
+        # If the __python3 command has version at the end, parse it and expect it.
+        # Note that the command is used to determine %python3_sitelib and %python3_sitearch,
+        # so we only test known CPython schemes here and not PyPy for simplicity.
+        if (match := re.match(r'.+python(\d+\.\d+)$', __python3)):
+            x_y = match.group(1)
+
+    invocation = '%{py3_check_import ' + args +'}'
+    lines = rpm_eval(invocation, **macros)
+
+    # An equality check is a bit inflexible here,
+    # every time we change the macro we need to change this test.
+    # However actually executing it and verifying the result is much harder :/
+    # At least, let's make the lines saner to check:
+    lines = [line.rstrip('\\').strip() for line in lines]
+    expected = textwrap.dedent(fr"""
+        PATH="BUILDROOT/usr/bin:$PATH"
+        PYTHONPATH="${{PYTHONPATH:-BUILDROOT/usr/{lib}/python{x_y}/site-packages:BUILDROOT/usr/lib/python{x_y}/site-packages}}"
+        _PYTHONSITE="BUILDROOT/usr/{lib}/python{x_y}/site-packages:BUILDROOT/usr/lib/python{x_y}/site-packages"
+        PYTHONDONTWRITEBYTECODE=1
+        {__python3 or '/usr/bin/python3'} -s{safe_path_flag(x_y)} RPMCONFIGDIR/redhat/import_all_modules.py {expected_args}
+        """)
+    assert lines == expected.splitlines()
+
+
+@pytest.mark.parametrize(
+    'shebang_flags_value, expected_shebang_flags',
+    [
+        ('sP', '-sP'),
+        ('s', '-s'),
+        ('%{nil}', ''),
+        (None, ''),
+        ('Es', '-Es'),
+    ]
+)
+def test_py3_check_import_respects_shebang_flags(shebang_flags_value, expected_shebang_flags, lib):
+    macros = {
+        '_rpmconfigdir': 'RPMCONFIGDIR',
+        '__python3': '/usr/bin/python3',
+        'py3_shebang_flags': shebang_flags_value,
+    }
+    lines = rpm_eval('%py3_check_import sys', **macros)
+    # Compare the last line of the command, that's where lua part is evaluated
+    expected = f'/usr/bin/python3 {expected_shebang_flags} RPMCONFIGDIR/redhat/import_all_modules.py sys'
+    assert  lines[-1].strip() == expected
diff --git a/tests/test_import_all_modules.py b/tests/test_import_all_modules.py
new file mode 100644
index 0000000..71feeff
--- /dev/null
+++ b/tests/test_import_all_modules.py
@@ -0,0 +1,426 @@
+from import_all_modules import argparser, exclude_unwanted_module_globs
+from import_all_modules import main as modules_main
+from import_all_modules import read_modules_from_cli, filter_top_level_modules_only
+
+from pathlib import Path
+
+import pytest
+import shlex
+import sys
+
+
+@pytest.fixture(autouse=True)
+def preserve_sys_path():
+    original_sys_path = list(sys.path)
+    yield
+    sys.path = original_sys_path
+
+
+@pytest.fixture(autouse=True)
+def preserve_sys_modules():
+    original_sys_modules = dict(sys.modules)
+    yield
+    sys.modules = original_sys_modules
+
+
+@pytest.mark.parametrize(
+    'args, imports',
+    [
+        ('six', ['six']),
+        ('five  six seven', ['five', 'six', 'seven']),
+        ('six,seven, eight', ['six', 'seven', 'eight']),
+        ('six.quarter  six.half,, SIX', ['six.quarter', 'six.half', 'SIX']),
+        ('six.quarter  six.half,, SIX \\ ', ['six.quarter', 'six.half', 'SIX']),
+    ]
+)
+def test_read_modules_from_cli(args, imports):
+    argv = shlex.split(args)
+    cli_args = argparser().parse_args(argv)
+    assert read_modules_from_cli(cli_args.modules) == imports
+
+
+@pytest.mark.parametrize(
+    'all_mods, imports',
+    [
+        (['six'], ['six']),
+        (['five', 'six', 'seven'], ['five', 'six', 'seven']),
+        (['six.seven', 'eight'], ['eight']),
+        (['SIX', 'six.quarter', 'six.half.and.sth', 'seven'], ['SIX', 'seven']),
+    ],
+)
+def test_filter_top_level_modules_only(all_mods, imports):
+    assert filter_top_level_modules_only(all_mods) == imports
+
+
+@pytest.mark.parametrize(
+    'globs, expected',
+    [
+        (['*.*'], ['foo', 'boo']),
+        (['?oo'], ['foo.bar', 'foo.bar.baz', 'foo.baz']),
+        (['*.baz'], ['foo', 'foo.bar', 'boo']),
+        (['foo'], ['foo.bar', 'foo.bar.baz', 'foo.baz', 'boo']),
+        (['foo*'], ['boo']),
+        (['foo*', '*bar'], ['boo']),
+        (['foo', 'bar'], ['foo.bar', 'foo.bar.baz', 'foo.baz', 'boo']),
+        (['*'], []),
+    ]
+)
+def test_exclude_unwanted_module_globs(globs, expected):
+    my_modules = ['foo', 'foo.bar', 'foo.bar.baz', 'foo.baz', 'boo']
+    tested = exclude_unwanted_module_globs(globs, my_modules)
+    assert tested == expected
+
+
+def test_cli_with_all_args():
+    '''A smoke test, all args must be parsed correctly.'''
+    mods = ['foo', 'foo.bar', 'baz']
+    files = ['-f', './foo']
+    top = ['-t']
+    exclude = ['-e', 'foo*']
+    cli_args = argparser().parse_args([*mods, *files, *top, *exclude])
+
+    assert cli_args.filename == [Path('foo')]
+    assert cli_args.top_level is True
+    assert cli_args.modules == ['foo', 'foo.bar', 'baz']
+    assert cli_args.exclude == ['foo*']
+
+
+def test_cli_without_filename_toplevel():
+    '''Modules provided on command line (without files) must be parsed correctly.'''
+    mods = ['foo', 'foo.bar', 'baz']
+    cli_args = argparser().parse_args(mods)
+
+    assert cli_args.filename is None
+    assert cli_args.top_level is False
+    assert cli_args.modules == ['foo', 'foo.bar', 'baz']
+
+
+def test_cli_with_filename_no_cli_mods():
+    '''Files (without any modules provided on command line) must be parsed correctly.'''
+
+    files = ['-f', './foo', '-f', './bar', '-f', './baz']
+    cli_args = argparser().parse_args(files)
+
+    assert cli_args.filename == [Path('foo'), Path('./bar'), Path('./baz')]
+    assert not cli_args.top_level
+
+
+def test_main_raises_error_when_no_modules_provided():
+    '''If no filename nor modules were provided, ValueError is raised.'''
+
+    with pytest.raises(ValueError):
+        modules_main([])
+
+
+def test_import_all_modules_does_not_import():
+    '''Ensure the files from /usr/lib/rpm/redhat cannot be imported and
+    checked for import'''
+
+    # We already imported it in this file once, make sure it's not imported
+    # from the cache
+    sys.modules.pop('import_all_modules')
+    with pytest.raises(ModuleNotFoundError):
+        modules_main(['import_all_modules'])
+
+
+def test_modules_from_cwd_not_found(tmp_path, monkeypatch):
+    test_module = tmp_path / 'this_is_a_module_in_cwd.py'
+    test_module.write_text('')
+    monkeypatch.chdir(tmp_path)
+    with pytest.raises(ModuleNotFoundError):
+        modules_main(['this_is_a_module_in_cwd'])
+
+
+def test_modules_from_sys_path_found(tmp_path):
+    test_module = tmp_path / 'this_is_a_module_in_sys_path.py'
+    test_module.write_text('')
+    sys.path.append(str(tmp_path))
+    modules_main(['this_is_a_module_in_sys_path'])
+    assert 'this_is_a_module_in_sys_path' in sys.modules
+
+
+def test_modules_from_file_are_found(tmp_path):
+    test_file = tmp_path / 'this_is_a_file_in_tmp_path.txt'
+    test_file.write_text('math\nwave\ncsv\n')
+
+    # Make sure the tested modules are not already in sys.modules
+    for m in ('math', 'wave', 'csv'):
+        sys.modules.pop(m, None)
+
+    modules_main(['-f', str(test_file)])
+
+    assert 'csv' in sys.modules
+    assert 'math' in sys.modules
+    assert 'wave' in sys.modules
+
+
+def test_modules_from_files_are_found(tmp_path):
+    test_file_1 = tmp_path / 'this_is_a_file_in_tmp_path_1.txt'
+    test_file_2 = tmp_path / 'this_is_a_file_in_tmp_path_2.txt'
+    test_file_3 = tmp_path / 'this_is_a_file_in_tmp_path_3.txt'
+
+    test_file_1.write_text('math\nwave\n')
+    test_file_2.write_text('csv\npathlib\n')
+    test_file_3.write_text('logging\ncsv\n')
+
+    # Make sure the tested modules are not already in sys.modules
+    for m in ('math', 'wave', 'csv', 'pathlib', 'logging'):
+        sys.modules.pop(m, None)
+
+    modules_main(['-f', str(test_file_1), '-f', str(test_file_2), '-f', str(test_file_3), ])
+    for module in ('csv', 'math', 'wave', 'pathlib', 'logging'):
+        assert module in sys.modules
+
+
+def test_nonexisting_modules_raise_exception_on_import(tmp_path):
+    test_file = tmp_path / 'this_is_a_file_in_tmp_path.txt'
+    test_file.write_text('nonexisting_module\nanother\n')
+    with pytest.raises(ModuleNotFoundError):
+        modules_main(['-f', str(test_file)])
+
+
+def test_nested_modules_found_when_expected(tmp_path, monkeypatch, capsys):
+
+    # This one is supposed to raise an error
+    cwd_path = tmp_path / 'test_cwd'
+    Path.mkdir(cwd_path)
+    test_module_1 = cwd_path / 'this_is_a_module_in_cwd.py'
+
+    # Nested structure that is supposed to be importable
+    nested_path_1 = tmp_path / 'nested'
+    nested_path_2 = nested_path_1 / 'more_nested'
+
+    for path in (nested_path_1, nested_path_2):
+        Path.mkdir(path)
+
+    test_module_2 = tmp_path / 'this_is_a_module_in_level_0.py'
+    test_module_3 = nested_path_1 / 'this_is_a_module_in_level_1.py'
+    test_module_4 = nested_path_2 / 'this_is_a_module_in_level_2.py'
+
+    for module in (test_module_1, test_module_2, test_module_3, test_module_4):
+        module.write_text('')
+
+    sys.path.append(str(tmp_path))
+    monkeypatch.chdir(cwd_path)
+
+    with pytest.raises(ModuleNotFoundError):
+        modules_main([
+            'this_is_a_module_in_level_0',
+            'nested.this_is_a_module_in_level_1',
+            'nested.more_nested.this_is_a_module_in_level_2',
+            'this_is_a_module_in_cwd'])
+
+    _, err = capsys.readouterr()
+    assert 'Check import: this_is_a_module_in_level_0' in err
+    assert 'Check import: nested.this_is_a_module_in_level_1' in err
+    assert 'Check import: nested.more_nested.this_is_a_module_in_level_2' in err
+    assert 'Check import: this_is_a_module_in_cwd' in err
+
+
+def test_modules_both_from_files_and_cli_are_imported(tmp_path):
+    test_file_1 = tmp_path / 'this_is_a_file_in_tmp_path_1.txt'
+    test_file_1.write_text('this_is_a_module_in_tmp_path_1')
+
+    test_file_2 = tmp_path / 'this_is_a_file_in_tmp_path_2.txt'
+    test_file_2.write_text('this_is_a_module_in_tmp_path_2')
+
+    test_module_1 = tmp_path / 'this_is_a_module_in_tmp_path_1.py'
+    test_module_2 = tmp_path / 'this_is_a_module_in_tmp_path_2.py'
+    test_module_3 = tmp_path / 'this_is_a_module_in_tmp_path_3.py'
+
+    for module in (test_module_1, test_module_2, test_module_3):
+        module.write_text('')
+
+    sys.path.append(str(tmp_path))
+    modules_main([
+        '-f', str(test_file_1),
+        'this_is_a_module_in_tmp_path_3',
+        '-f', str(test_file_2),
+    ])
+
+    expected = (
+        'this_is_a_module_in_tmp_path_1',
+        'this_is_a_module_in_tmp_path_2',
+        'this_is_a_module_in_tmp_path_3',
+    )
+    for module in expected:
+        assert module in sys.modules
+
+
+def test_non_existing_module_raises_exception(tmp_path):
+
+    test_module_1 = tmp_path / 'this_is_a_module_in_tmp_path_1.py'
+    test_module_1.write_text('')
+    sys.path.append(str(tmp_path))
+
+    with pytest.raises(ModuleNotFoundError):
+        modules_main([
+            'this_is_a_module_in_tmp_path_1',
+            'this_is_a_module_in_tmp_path_2',
+        ])
+
+
+def test_module_with_error_propagates_exception(tmp_path):
+
+    test_module_1 = tmp_path / 'this_is_a_module_in_tmp_path_1.py'
+    test_module_1.write_text('0/0')
+    sys.path.append(str(tmp_path))
+
+    # The correct exception must be raised
+    with pytest.raises(ZeroDivisionError):
+        modules_main([
+            'this_is_a_module_in_tmp_path_1',
+        ])
+
+
+def test_correct_modules_are_excluded(tmp_path):
+    test_module_1 = tmp_path / 'module_in_tmp_path_1.py'
+    test_module_2 = tmp_path / 'module_in_tmp_path_2.py'
+    test_module_3 = tmp_path / 'module_in_tmp_path_3.py'
+
+    for module in (test_module_1, test_module_2, test_module_3):
+        module.write_text('')
+
+    sys.path.append(str(tmp_path))
+    test_file_1 = tmp_path / 'a_file_in_tmp_path_1.txt'
+    test_file_1.write_text('module_in_tmp_path_1\nmodule_in_tmp_path_2\nmodule_in_tmp_path_3\n')
+
+    modules_main([
+        '-e', 'module_in_tmp_path_2',
+        '-f', str(test_file_1),
+        '-e', 'module_in_tmp_path_3',
+        ])
+
+    assert 'module_in_tmp_path_1' in sys.modules
+    assert 'module_in_tmp_path_2' not in sys.modules
+    assert 'module_in_tmp_path_3' not in sys.modules
+
+
+def test_excluding_all_modules_raises_error(tmp_path):
+    test_module_1 = tmp_path / 'module_in_tmp_path_1.py'
+    test_module_2 = tmp_path / 'module_in_tmp_path_2.py'
+    test_module_3 = tmp_path / 'module_in_tmp_path_3.py'
+
+    for module in (test_module_1, test_module_2, test_module_3):
+        module.write_text('')
+
+    sys.path.append(str(tmp_path))
+    test_file_1 = tmp_path / 'a_file_in_tmp_path_1.txt'
+    test_file_1.write_text('module_in_tmp_path_1\nmodule_in_tmp_path_2\nmodule_in_tmp_path_3\n')
+
+    with pytest.raises(ValueError):
+        modules_main([
+            '-e', 'module_in_tmp_path*',
+            '-f', str(test_file_1),
+            ])
+
+
+def test_only_toplevel_modules_found(tmp_path):
+
+    # Nested structure that is supposed to be importable
+    nested_path_1 = tmp_path / 'nested'
+    nested_path_2 = nested_path_1 / 'more_nested'
+
+    for path in (nested_path_1, nested_path_2):
+        Path.mkdir(path)
+
+    test_module_1 = tmp_path / 'this_is_a_module_in_level_0.py'
+    test_module_2 = nested_path_1 / 'this_is_a_module_in_level_1.py'
+    test_module_3 = nested_path_2 / 'this_is_a_module_in_level_2.py'
+
+    for module in (test_module_1, test_module_2, test_module_3):
+        module.write_text('')
+
+    sys.path.append(str(tmp_path))
+
+    modules_main([
+        'this_is_a_module_in_level_0',
+        'nested.this_is_a_module_in_level_1',
+        'nested.more_nested.this_is_a_module_in_level_2',
+        '-t'])
+
+    assert 'nested.this_is_a_module_in_level_1' not in sys.modules
+    assert 'nested.more_nested.this_is_a_module_in_level_2' not in sys.modules
+
+
+def test_only_toplevel_included_modules_found(tmp_path):
+
+    # Nested structure that is supposed to be importable
+    nested_path_1 = tmp_path / 'nested'
+    nested_path_2 = nested_path_1 / 'more_nested'
+
+    for path in (nested_path_1, nested_path_2):
+        Path.mkdir(path)
+
+    test_module_1 = tmp_path / 'this_is_a_module_in_level_0.py'
+    test_module_4 = tmp_path / 'this_is_another_module_in_level_0.py'
+
+    test_module_2 = nested_path_1 / 'this_is_a_module_in_level_1.py'
+    test_module_3 = nested_path_2 / 'this_is_a_module_in_level_2.py'
+
+    for module in (test_module_1, test_module_2, test_module_3, test_module_4):
+        module.write_text('')
+
+    sys.path.append(str(tmp_path))
+
+    modules_main([
+        'this_is_a_module_in_level_0',
+        'this_is_another_module_in_level_0',
+        'nested.this_is_a_module_in_level_1',
+        'nested.more_nested.this_is_a_module_in_level_2',
+        '-t',
+        '-e', '*another*'
+    ])
+
+    assert 'nested.this_is_a_module_in_level_1' not in sys.modules
+    assert 'nested.more_nested.this_is_a_module_in_level_2' not in sys.modules
+    assert 'this_is_another_module_in_level_0' not in sys.modules
+    assert 'this_is_a_module_in_level_0' in sys.modules
+
+
+def test_module_list_from_relative_path(tmp_path, monkeypatch):
+
+    monkeypatch.chdir(tmp_path)
+    test_file_1 = Path('this_is_a_file_in_cwd.txt')
+    test_file_1.write_text('wave')
+
+    sys.modules.pop('wave', None)
+
+    modules_main([
+        '-f', 'this_is_a_file_in_cwd.txt'
+    ])
+
+    assert 'wave' in sys.modules
+
+
+@pytest.mark.parametrize('arch_in_path', [True, False])
+def test_pth_files_are_read_from__PYTHONSITE(arch_in_path, tmp_path, monkeypatch, capsys):
+    sitearch = tmp_path / 'lib64'
+    sitearch.mkdir()
+    sitelib = tmp_path / 'lib'
+    sitelib.mkdir()
+
+    for where, word in (sitearch, "ARCH"), (sitelib, "LIB"), (sitelib, "MOD"):
+        module = where / f'print{word}.py'
+        module.write_text(f'print("{word}")')
+
+    pth_sitearch = sitearch / 'ARCH.pth'
+    pth_sitearch.write_text('import printARCH\n')
+
+    pth_sitelib = sitelib / 'LIB.pth'
+    pth_sitelib.write_text('import printLIB\n')
+
+    if arch_in_path:
+        sys.path.append(str(sitearch))
+    sys.path.append(str(sitelib))
+
+    # we always add sitearch to _PYTHONSITE
+    # but when not in sys.path, it should not be processed for .pth files
+    monkeypatch.setenv('_PYTHONSITE', f'{sitearch}:{sitelib}')
+
+    modules_main(['printMOD'])
+    out, err = capsys.readouterr()
+    if arch_in_path:
+        assert out == 'ARCH\nLIB\nMOD\n'
+    else:
+        assert out == 'LIB\nMOD\n'
diff --git a/tests/tests.yml b/tests/tests.yml
new file mode 100644
index 0000000..4b8b2dd
--- /dev/null
+++ b/tests/tests.yml
@@ -0,0 +1,40 @@
+---
+- hosts: localhost
+  tags:
+    - classic
+  tasks:
+    - dnf:
+        name: "*"
+        state: latest
+
+- hosts: localhost
+  roles:
+  - role: standard-test-basic
+    tags:
+    - classic
+    tests:
+    - pytest:
+        dir: .
+        run: PYTHONPATH=/usr/lib/rpm/redhat ALTERNATE_PYTHON_VERSION=3.6 pytest -v
+    - manual_byte_compilation_clamp_mtime_off:
+        dir: .
+        run: rpmbuild --define 'dist .clamp0' --define 'clamp_mtime_to_source_date_epoch 0' -ba pythontest.spec
+    - manual_byte_compilation_clamp_mtime_on:
+        dir: .
+        run: rpmbuild --define 'dist .clamp1' --define 'clamp_mtime_to_source_date_epoch 1' -ba pythontest.spec
+    - rpmlint_clamp_mtime_off:
+        dir: .
+        run: rpmlint ~/rpmbuild/RPMS/x86_64/pythontest-0-0.clamp0.x86_64.rpm | grep python-bytecode-inconsistent-mtime || exit 0 && exit 1
+    - rpmlint_clamp_mtime_on:
+        dir: .
+        run: rpmlint ~/rpmbuild/RPMS/x86_64/pythontest-0-0.clamp1.x86_64.rpm | grep python-bytecode-inconsistent-mtime || exit 0 && exit 1
+    required_packages:
+    - rpm-build
+    - rpmlint
+    - python-rpm-macros
+    - python3-rpm-macros
+    - python3-devel
+    - python3-pytest
+    - python3.6
+    - python2.7
+