diff --git a/.fmf/version b/.fmf/version
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/.fmf/version
@@ -0,0 +1 @@
+1
diff --git a/gating.yaml b/gating.yaml
index eb7c84f..d74bf08 100644
--- a/gating.yaml
+++ b/gating.yaml
@@ -1,6 +1,8 @@
 --- !Policy
+
 product_versions:
   - rhel-8
 decision_context: osci_compose_gate
 rules:
-  - !PassingTestCaseRule {test_case_name: baseos-ci.brew-build.tier1.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}
+
diff --git a/plan.fmf b/plan.fmf
new file mode 100644
index 0000000..c76fd4e
--- /dev/null
+++ b/plan.fmf
@@ -0,0 +1,24 @@
+execute:
+  how: tmt
+
+discover:
+  how: shell
+  tests:
+  - name: pytest
+    test: PYTHONPATH=/usr/lib/rpm/redhat ALTERNATE_PYTHON_VERSION=SKIP pytest-3 -v
+    path: /tests
+  - name: manual_byte_compilation
+    test: rpmbuild -ba pythontest.spec
+    path: /tests
+
+prepare:
+  - how: install
+    package:
+    - rpm-build
+    - python-rpm-macros
+    - python3-rpm-macros
+    - platform-python-devel
+    - python3-pytest
+    - dnf
+  - how: shell
+    script: dnf upgrade -y
diff --git a/tests/pythontest.spec b/tests/pythontest.spec
new file mode 100644
index 0000000..459b7ca
--- /dev/null
+++ b/tests/pythontest.spec
@@ -0,0 +1,33 @@
+%global basedir /opt/test/byte_compilation
+
+Name:           pythontest
+Version:        0
+Release:        0
+Summary:        ...
+License:        MIT
+BuildRequires:  platform-python-devel
+
+%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
+
+%check
+# Count .py and .pyc files
+PY=$(find %{buildroot}%{basedir} -name "*.py" | wc -l)
+PYC=$(find %{buildroot}%{basedir} -name "*.pyc" | wc -l)
+
+# 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 $PYC
+
+%files
+%pycached %{basedir}/file.py
+%pycached %{basedir}/directory/to/test/recursion/file_in_dir.py
diff --git a/tests/test_evals.py b/tests/test_evals.py
new file mode 100644
index 0000000..8468574
--- /dev/null
+++ b/tests/test_evals.py
@@ -0,0 +1,462 @@
+import os
+import subprocess
+import platform
+import sys
+import textwrap
+
+import pytest
+
+X_Y = f'{sys.version_info[0]}.{sys.version_info[1]}'
+XY = f'{sys.version_info[0]}{sys.version_info[1]}'
+
+# Handy environment variable you can use to run the tests
+# with modified macros files. Multiple files should be
+# separated by colon.
+# To get 'em all, run:
+# ls -1 macros.* | tr "\n" ":"
+# and then:
+# TESTED_FILES="<output of previous command>" pytest -v
+# or both combined:
+# TESTED_FILES=$(ls -1 macros.* | tr "\n" ":") pytest -v
+# Remember that some tests might need more macros files than just
+# the local ones.
+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]
+    # python3.6 doesn't have "text=True" which is used in Fedora
+    cp = subprocess.run(cmd, env={**os.environ, 'LANG': 'C.utf-8'}, encoding='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()
+
+
+def shell_stdout(script):
+    # python3.6 doesn't have "text=True" which is used in Fedora
+    return subprocess.check_output(script,
+                                   env={**os.environ, 'LANG': 'C.utf-8'},
+                                   encoding='utf-8',
+                                   shell=True).rstrip()
+
+
+def older_rhel87():
+    try:
+        _, r, _ = platform.dist()
+        return r != '8.10' and float(r) < 8.7
+    except Exception:
+        return False
+
+@pytest.mark.parametrize('argument, result', [
+    ('a', 'a'),
+    ('a-a', 'a-a'),
+    ('a_a', 'a-a'),
+    pytest.param('a.a', 'a-a', marks=pytest.mark.skip(reason="stay old-RHEL compatible")),
+    pytest.param('a.a', 'a.a'),
+    ('a---a', 'a-a'),
+    ('a-_-a', 'a-a'),
+    ('a-_-a', 'a-a'),
+    pytest.param('a[b]', 'a[b]', marks=pytest.mark.skip(reason="not planned for RHEL")),
+    pytest.param('Aha[Boom]', 'aha[boom]', marks=pytest.mark.skip(reason="not planned for RHEL")),
+    pytest.param('a.a[b.b]', 'a-a[b-b]', marks=pytest.mark.skip(reason="not planned for RHEL")),
+])
+def test_pydist_name(argument, result):
+    assert rpm_eval(f'%py_dist_name {argument}') == [result]
+
+
+@pytest.mark.skip(reason="not planned for RHEL")
+def test_py2_dist():
+    assert rpm_eval(f'%py2_dist Aha[Boom] a') == ['python2dist(aha[boom]) python2dist(a)']
+
+@pytest.mark.skip(reason="not planned for RHEL")
+def test_py3_dist():
+    assert rpm_eval(f'%py3_dist Aha[Boom] a') == ['python3dist(aha[boom]) python3dist(a)']
+
+@pytest.mark.skip(reason="not planned for RHEL")
+def test_py3_dist_with_python3_pkgversion_redefined():
+    assert rpm_eval(f'%py3_dist Aha[Boom] a',
+                    python3_pkgversion="3.6") == ['python3.6dist(aha[boom]) python3.6dist(a)']
+
+
+def test_python_provide_python():
+    assert rpm_eval('%python_provide python-foo') == ['Provides: python2-foo = %{version}-%{release}']
+
+
+def test_python_provide_python3():
+    assert rpm_eval('%python_provide python3-foo', version='6', release='1.fc66') == []
+
+
+def test_python_provide_python3_epoched():
+    assert rpm_eval('%python_provide python3-foo', epoch='1', version='6', release='1.fc66') == []
+
+
+def test_python_provide_python3X():
+    assert rpm_eval(f'%python_provide python{X_Y}-foo', version='6',
+                    release='1.fc66') == ['%python_provide: ERROR: python3.6-foo not recognized.']
+
+
+def test_python_provide_python3X_epoched():
+    assert rpm_eval(f'%python_provide python{X_Y}-foo', epoch='1', version='6',
+                    release='1.fc66') == ['%python_provide: ERROR: python3.6-foo not recognized.']
+
+
+def test_python_provide_doubleuse():
+    lines = rpm_eval('%{python_provide python3-foo}%{python_provide python3-foo}',
+                     version='6', release='1.fc66') == []
+
+
+def test_py_provides_python():
+    lines = rpm_eval('%py_provides python-foo', version='6', release='1.fc66')
+    assert 'Provides: python-foo = 6-1.fc66' in lines
+    assert len(lines) == 1
+
+
+def test_py_provides_whatever():
+    lines = rpm_eval('%py_provides whatever', version='6', release='1.fc66')
+    assert 'Provides: whatever = 6-1.fc66' in lines
+    assert len(lines) == 1
+
+
+def test_py_provides_python3():
+    lines = rpm_eval('%py_provides python3-foo', version='6', release='1.fc66')
+    assert 'Provides: python3-foo = 6-1.fc66' in lines
+    # difference RHEL vs Fedora: python-foo format is not allowed
+    assert 'Provides: python-foo = 6-1.fc66' not in lines
+    assert len(lines) == 1
+
+
+def test_py_provides_python3_epoched():
+    lines = rpm_eval('%py_provides python3-foo', epoch='1', version='6', release='1.fc66')
+    assert 'Provides: python3-foo = 1:6-1.fc66' in lines
+    # difference RHEL vs Fedora: python-foo format is not allowed
+    assert 'Provides: python-foo = 1:6-1.fc66' not in lines
+    assert len(lines) == 1
+
+
+def test_py_provides_python3X():
+    lines = rpm_eval(f'%py_provides python{X_Y}-foo', version='6', release='1.fc66')
+    assert f'Provides: python{X_Y}-foo = 6-1.fc66' in lines
+    # difference RHEL vs Fedora: python-foo format is not allowed
+    assert 'Provides: python-foo = 6-1.fc66' not in lines
+    assert len(lines) == 1
+
+
+def test_py_provides_python3X_epoched():
+    lines = rpm_eval(f'%py_provides python{X_Y}-foo', epoch='1', version='6', release='1.fc66')
+    assert f'Provides: python{X_Y}-foo = 1:6-1.fc66' in lines
+    # difference RHEL vs Fedora: python-foo format is not allowed
+    assert 'Provides: python-foo = 1:6-1.fc66' not in lines
+    assert len(lines) == 1
+
+
+def test_py_provides_doubleuse():
+    lines = rpm_eval('%{py_provides python3-foo}%{py_provides python3-foo}',
+                     version='6', release='1.fc66')
+    assert 'Provides: python3-foo = 6-1.fc66' in lines
+    # difference RHEL vs Fedora: python-foo format is not allowed
+    assert 'Provides: python-foo = 6-1.fc66' not in lines
+    assert len(lines) == 2
+    assert len(set(lines)) == 1
+
+
+def test_py_provides_with_evr():
+    lines = rpm_eval('%py_provides python3-foo 123',
+                     version='6', release='1.fc66')
+    assert 'Provides: python3-foo = 123' in lines
+    assert len(lines) == 1
+
+
+def test_pytest_passes_options_naturally():
+    lines = rpm_eval('%pytest -k foo')
+    # difference RHEL vs Fedora: pytest-3 binary name
+    assert '/usr/bin/pytest-3 -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')
+    # difference RHEL vs Fedora: pytest-3 binary name
+    assert '/usr/bin/pytest-3 -v' in lines[-1]
+    lines = rpm_eval('%pytest -v', python3_pkgversion="3.6", python3_version="3.6")
+    # difference RHEL vs Fedora: only pytest-3 binary name
+    # Changed in rhel-8.7 (https://bugzilla.redhat.com/show_bug.cgi?id=2091462)
+    if older_rhel87():
+        assert '/usr/bin/pytest-3 -v' in lines[-1]
+    else:
+        assert '/usr/bin/pytest-3.6 -v' in lines[-1]
+
+
+def test_pypi_source_default_name():
+    url = rpm_eval('%pypi_source',
+                   name='foo', version='6')[0]
+    assert url == 'https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz'
+
+
+def test_pypi_source_default_srcname():
+    url = rpm_eval('%pypi_source',
+                   name='python-foo', srcname='foo', version='6')[0]
+    assert url == 'https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz'
+
+
+def test_pypi_source_default_pypi_name():
+    url = rpm_eval('%pypi_source',
+                   name='python-foo', pypi_name='foo', version='6')[0]
+    assert url == 'https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz'
+
+
+def test_pypi_source_default_name_uppercase():
+    url = rpm_eval('%pypi_source',
+                   name='Foo', version='6')[0]
+    assert url == 'https://files.pythonhosted.org/packages/source/F/Foo/Foo-6.tar.gz'
+
+
+def test_pypi_source_provided_name():
+    url = rpm_eval('%pypi_source foo',
+                   name='python-bar', pypi_name='bar', version='6')[0]
+    assert url == 'https://files.pythonhosted.org/packages/source/f/foo/foo-6.tar.gz'
+
+
+def test_pypi_source_provided_name_version():
+    url = rpm_eval('%pypi_source foo 6',
+                   name='python-bar', pypi_name='bar', version='3')[0]
+    assert url == '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')[0]
+    assert url == 'https://files.pythonhosted.org/packages/source/f/foo/foo-6.zip'
+
+
+def test_pypi_source_prerelease():
+    url = rpm_eval('%pypi_source',
+                   name='python-foo', pypi_name='foo', version='6~b2')[0]
+    assert url == 'https://files.pythonhosted.org/packages/source/f/foo/foo-6b2.tar.gz'
+
+
+def test_pypi_source_explicit_tilde():
+    url = rpm_eval('%pypi_source foo 6~6',
+                   name='python-foo', pypi_name='foo', version='6')[0]
+    assert url == '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()
+    # difference RHEL vs Fedora: platform-python
+    assert cmd == '$pathfix -pni /usr/libexec/platform-python $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)) == '-kas'
+
+
+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('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 $shebang_flags'
+    assert shell_stdout('\n'.join(lines)) == '-k'
+
+
+def test_py_shebang_fix_custom_python():
+    cmd = rpm_eval('%py_shebang_fix arg1 arg2 arg3', __python='/usr/bin/pypy')[-1].strip()
+    assert cmd == '$pathfix -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():
+    lines = rpm_eval('%pycached %{python3_sitearch}/foo*.py')
+    lib = rpm_eval('%_lib')[0]
+    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_36():
+    lines = rpm_eval('%pycached /usr/lib/python3.6/site-packages/foo*.py')
+    assert lines == [
+        '/usr/lib/python3.6/site-packages/foo*.py',
+        '/usr/lib/python3.6/site-packages/__pycache__/foo*.cpython-36{,.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'
+
+@pytest.mark.skip(reason="Not available on RHEL")
+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 contains no code, just 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 contains no code, just 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
+
+@pytest.mark.skip(reason="Not available on RHEL")
+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 contains no code, just 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 contains no code, just makes sure the dependencies are installed.
+
+        %files -n python3-setuptools_scm+yaml -f ghost_filelist
+        """).lstrip().splitlines()
+    assert lines == expected
+
+@pytest.mark.skip(reason="Not available on RHEL")
+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 contains no code, just 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 contains no code, just makes sure the dependencies are installed.
+        """).lstrip().splitlines()
+    assert lines == expected
+
+
+unversioned_macros = pytest.mark.parametrize('macro', [
+    '%__python',
+    '%python',
+    '%python_version',
+    pytest.param('%python_version_nodots', marks=pytest.mark.skip(reason="RHEL is different")),
+    '%python_sitelib',
+    '%python_sitearch',
+    pytest.param('%python_platform', marks=pytest.mark.skip(reason="RHEL is different")),
+    '%python_platform_triplet',
+    '%python_ext_suffix',
+    '%py_shebang_fix',
+    '%py_build',
+    '%py_build_egg',
+    '%py_build_wheel',
+    '%py_install',
+    pytest.param('%py_install_egg', marks=pytest.mark.skip(reason="RHEL is different")),
+    pytest.param('%py_install_wheel', marks=pytest.mark.skip(reason="RHEL is different")), #FIXME  working macro but not tested
+])
+
+
+@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')
+
+@pytest.mark.parametrize('macro',[
+    '%python_version_nodots',
+    '%python_platform',
+])
+def test_unversioned_python_errors_rhel_specific(macro):
+    # on rhel - return macro string unchanged and exit with 0
+    assert macro in rpm_eval(macro)[-1]
+
+
+@unversioned_macros
+def test_unversioned_python_works_when_defined(macro):
+    macro3 = macro.replace('python', 'python3').replace('py_', 'py3_')
+    # difference RHEL vs Fedora
+    assert rpm_eval(macro, __python='/usr/libexec/platform-python') == 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")[0] == "x86_64-linux-gnu"
+
+
+@x86_64_only
+def test_ext_suffix():
+    assert rpm_eval("%python3_ext_suffix")[0] == f".cpython-{XY}m-x86_64-linux-gnu.so"