test(release): update pyproject version tests for PEP 621 and RuntimeError handling

- Adjust tests to expect RuntimeError instead of SystemExit
- Add coverage for missing [project] section in pyproject.toml
- Keep spec macro %{?dist} intact in test fixtures
- Minor cleanup and reformatting of test cases

https://chatgpt.com/share/69454836-4698-800f-9d19-7e67e8e789d6

tests/unit/pkgmgr/actions/release/test_files.py

@@ -7,13 +7,13 @@ import unittest
 from unittest.mock import patch
 
 from pkgmgr.actions.release.files import (
-    update_pyproject_version,
-    update_flake_version,
-    update_pkgbuild_version,
-    update_spec_version,
     update_changelog,
     update_debian_changelog,
+    update_flake_version,
+    update_pkgbuild_version,
+    update_pyproject_version,
     update_spec_changelog,
+    update_spec_version,
 )
 
 
@@ -65,10 +65,9 @@ class TestUpdatePyprojectVersion(unittest.TestCase):
             with open(path, "r", encoding="utf-8") as f:
                 content = f.read()
 
-        # Content must be unchanged in preview mode
         self.assertEqual(content, original)
 
-    def test_update_pyproject_version_exits_when_no_version_line_found(self) -> None:
+    def test_update_pyproject_version_raises_when_no_version_line_found(self) -> None:
         original = (
             textwrap.dedent(
                 """
@@ -84,24 +83,39 @@ class TestUpdatePyprojectVersion(unittest.TestCase):
             with open(path, "w", encoding="utf-8") as f:
                 f.write(original)
 
-            with self.assertRaises(SystemExit) as cm:
+            with self.assertRaises(RuntimeError) as cm:
                 update_pyproject_version(path, "1.2.3", preview=False)
 
-        self.assertNotEqual(cm.exception.code, 0)
+        self.assertIn("Missing version key", str(cm.exception))
+
+    def test_update_pyproject_version_raises_when_project_section_missing(self) -> None:
+        original = (
+            textwrap.dedent(
+                """
+                name = "example"
+                version = "0.1.0"
+                """
+            ).strip()
+            + "\n"
+        )
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            path = os.path.join(tmpdir, "pyproject.toml")
+            with open(path, "w", encoding="utf-8") as f:
+                f.write(original)
+
+            with self.assertRaises(RuntimeError) as cm:
+                update_pyproject_version(path, "1.2.3", preview=False)
+
+        self.assertIn("Missing [project] section", str(cm.exception))
 
     def test_update_pyproject_version_missing_file_is_skipped(self) -> None:
-        """
-        If pyproject.toml does not exist, the function must not raise
-        and must not create the file. It should simply be skipped.
-        """
         with tempfile.TemporaryDirectory() as tmpdir:
             path = os.path.join(tmpdir, "pyproject.toml")
             self.assertFalse(os.path.exists(path))
 
-            # Must not raise an exception
             update_pyproject_version(path, "1.2.3", preview=False)
 
-            # Still no file created
             self.assertFalse(os.path.exists(path))
 
 
@@ -267,7 +281,6 @@ class TestUpdateChangelog(unittest.TestCase):
             with open(path, "r", encoding="utf-8") as f:
                 content = f.read()
 
-        # New entry must be on top
         self.assertTrue(content.startswith("## [1.0.0]"))
         self.assertIn("## [0.1.0] - 2024-01-01", content)
 
@@ -290,16 +303,12 @@ class TestUpdateDebianChangelog(unittest.TestCase):
     def test_update_debian_changelog_creates_new_stanza(self) -> None:
         with tempfile.TemporaryDirectory() as tmpdir:
             path = os.path.join(tmpdir, "changelog")
-            # existing content
             with open(path, "w", encoding="utf-8") as f:
                 f.write("existing content\n")
 
             with patch.dict(
                 os.environ,
-                {
-                    "DEBFULLNAME": "Test Maintainer",
-                    "DEBEMAIL": "test@example.com",
-                },
+                {"DEBFULLNAME": "Test Maintainer", "DEBEMAIL": "test@example.com"},
                 clear=False,
             ):
                 update_debian_changelog(
@@ -327,10 +336,7 @@ class TestUpdateDebianChangelog(unittest.TestCase):
 
             with patch.dict(
                 os.environ,
-                {
-                    "DEBFULLNAME": "Test Maintainer",
-                    "DEBEMAIL": "test@example.com",
-                },
+                {"DEBFULLNAME": "Test Maintainer", "DEBEMAIL": "test@example.com"},
                 clear=False,
             ):
                 update_debian_changelog(
@@ -374,10 +380,7 @@ class TestUpdateSpecChangelog(unittest.TestCase):
 
             with patch.dict(
                 os.environ,
-                {
-                    "DEBFULLNAME": "Test Maintainer",
-                    "DEBEMAIL": "test@example.com",
-                },
+                {"DEBFULLNAME": "Test Maintainer", "DEBEMAIL": "test@example.com"},
                 clear=False,
             ):
                 update_spec_changelog(
@@ -391,11 +394,9 @@ class TestUpdateSpecChangelog(unittest.TestCase):
             with open(path, "r", encoding="utf-8") as f:
                 content = f.read()
 
-        # New stanza must appear after the %changelog marker
         self.assertIn("%changelog", content)
         self.assertIn("Fedora changelog entry", content)
         self.assertIn("Test Maintainer <test@example.com>", content)
-        # Old entries must still be present
         self.assertIn("Old Maintainer <old@example.com>", content)
 
     def test_update_spec_changelog_preview_does_not_write(self) -> None:
@@ -421,10 +422,7 @@ class TestUpdateSpecChangelog(unittest.TestCase):
 
             with patch.dict(
                 os.environ,
-                {
-                    "DEBFULLNAME": "Test Maintainer",
-                    "DEBEMAIL": "test@example.com",
-                },
+                {"DEBFULLNAME": "Test Maintainer", "DEBEMAIL": "test@example.com"},
                 clear=False,
             ):
                 update_spec_changelog(
@@ -438,7 +436,6 @@ class TestUpdateSpecChangelog(unittest.TestCase):
             with open(path, "r", encoding="utf-8") as f:
                 content = f.read()
 
-        # In preview mode, the spec file must not change
         self.assertEqual(content, original)