tests: make the fedora-tox.yml working

This is tricky.  Note the sys.path hack in test/unit/__init__.py where
we intentionally use the Fedora's default Python libraries with a
different Python version selected by Tox.  Right now it means that we
use, e.g., python3-rpm compiled for Python 3.12 (F39) with Python 3.7
(which probably works because Tox is executed as root in the tox
container, overwriting the pre-compiled *.pyc files in container).

Some tests need to be skipped in Tox, therefore the skip_if_tox()
method.

Also, the GitHub's action for 'git checkout' provides somewhat
non-standard environment for Tito to work, hence the fix_tox_env()
configuration method.

.github/workflows/fedora-tox.yml

@@ -12,13 +12,28 @@ jobs:
   tox_test:
     name: Tox test
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: Run Tox tests
         id: test
         uses: fedora-python/tox-github-action@main
         with:
           tox_env: ${{ matrix.tox_env }}
-          dnf_install: python3-rpm
+          dnf_install: >
+            asciidoc
+            createrepo_c
+            docbook-style-xsl
+            git
+            git
+            git-annex
+            libxslt
+            python3-bugzilla
+            python3-rpm
+            rpm-build
+            rpmdevtools
+            rsync
+            which
     strategy:
       matrix:
         tox_env:

requirements.txt

@@ -1 +1,2 @@
 blessed
+requests

test/unit/__init__.py

@@ -13,6 +13,7 @@
 
 import os
 import sys
+import subprocess
 
 from contextlib import contextmanager
 from unittest.mock import patch, MagicMock
@@ -46,6 +47,34 @@ titodirpatch = patch("tito.cli.DEFAULT_BUILD_DIR", titodir)
 titodirpatch.start()
 
 
+def fix_tox_env():
+    """
+    If we run in the fedora-tox environment, we need to do some configuration
+    """
+    if "TOX_WORK_DIR" not in os.environ:
+        return
+
+    dirs = subprocess.check_output(
+        "rpm -ql python3-libs | grep site-packages$", shell=True,
+        encoding="utf-8")
+    for site_dir in dirs.strip().split():
+        sys.path.append(site_dir)
+
+    if os.path.exists(os.path.expanduser("~/.gitconfig")):
+        return
+
+    gconf = ['git', 'config', '--global']
+    subprocess.call(gconf + ['user.email', 'you@example.com'], cwd="/tmp")
+    subprocess.call(gconf + ['user.name', 'Your Name'], cwd="/tmp")
+    subprocess.call(gconf + ['--add', 'safe.directory', '*'], cwd="/tmp")
+    subprocess.call(gconf + ['init.defaultBranch', 'main'], cwd="/tmp")
+    # tito tests need 'main' head, do it explicitly for github's checkout
+    subprocess.call(['git', 'branch', 'main', 'origin/main'])
+
+
+fix_tox_env()
+
+
 def skip_if_rpmbuild():
     """ some tests can't work during rpmbuild """
     # don't do "isdir()", worktrees have .git as a plain file
@@ -54,6 +83,12 @@ def skip_if_rpmbuild():
     skip("not supported for rpmbuild")
 
 
+def skip_if_tox():
+    """ some tests don't work nice with Tox """
+    if "TOX_WORK_DIR" in os.environ:
+        skip("doesn't work in tox")
+
+
 class Capture(object):
     class Tee(object):
         def __init__(self, stream, silent):

test/unit/pep8_tests.py

@@ -32,9 +32,11 @@ except ImportError:
 
 import unittest
 
+from unit.fixture import TitoUnitTestFixture, REPO_DIR
+from unit import skip_if_tox
+
 from tito.compat import *  # NOQA
 from tito.compat import StringIO, redirect_stdout
-from unit.fixture import TitoUnitTestFixture, REPO_DIR
 
 
 class TestPep8(TitoUnitTestFixture):
@@ -94,6 +96,8 @@ class TestPep8(TitoUnitTestFixture):
 
 class UglyHackishTest(TitoUnitTestFixture):
     def setUp(self):
+        # These tests give false-positives for .tox/ directory
+        skip_if_tox()
         TitoUnitTestFixture.setUp(self)
         os.chdir(REPO_DIR)
 

test/unit/tagger_tests.py

@@ -1,10 +1,11 @@
+import os
 import unittest
 from unittest import mock
 from datetime import datetime
 from tito.tagger import VersionTagger
 from tito.compat import PY2, RawConfigParser
 
-from unit import is_epel6, skip_if_rpmbuild
+from unit import is_epel6, skip_if_rpmbuild, srcdir
 if is_epel6:
     import unittest2 as unittest
 else:
@@ -22,6 +23,7 @@ def strftime_mock(s):
 class TestVersionTagger(unittest.TestCase):
     def setUp(self):
         skip_if_rpmbuild()
+        os.chdir(srcdir)
         self.config = RawConfigParser()
 
     @mock.patch("tito.tagger.main.strftime", strftime_mock)

tox.ini

@@ -20,7 +20,11 @@ skipsdist = True
 deps =
     -rrequirements.txt
     coverage
+    pycodestyle
     pytest
     pytest-cov
 commands =
     python -m pytest -v {posargs} --cov-report term-missing --cov-branch --cov
+setenv =
+    PYTHONPATH = ./src
+syspaths = True