Change: Extend get_last_release_version for ignoring pre releases

Add a new ignore_pre_releases argument to get_last_release_version
function to allow ignoring pre releases to be considered as a release
version.

Using this feature will allow for generating a release changelog
including the changes from the pre releases.

pontos/version/helper.py

@@ -78,20 +78,31 @@ def versions_equal(new_version: str, old_version: str) -> bool:
 
 def get_last_release_version(
     git_tag_prefix: Optional[str] = "",
+    *,
+    ignore_pre_releases: Optional[bool] = False,
 ) -> Optional[Version]:
     """Get the last released Version from git.
 
+    Args:
+        git_tag_prefix: Git tag prefix to consider
+        ignore_pre_release: Ignore pre releases and only consider non pre
+            releases. Default is False.
+
     Returns:
-        Last released git-tag if tags were found
+        Last released git-tag as Version if tags were found
         or None
     """
 
     tag_list = Git().list_tags(sort=TagSort.VERSION)
 
-    if not tag_list:
-        return None
+    while tag_list:
+        last_release_version = tag_list[-1]
+        last_release_version = last_release_version.strip(git_tag_prefix)
+
+        version = parse_version(last_release_version)
+        if not version.is_prerelease or not ignore_pre_releases:
+            return version
 
-    last_release_version = tag_list[-1]
-    last_release_version = last_release_version.strip(git_tag_prefix)
+        tag_list = tag_list[:-1]
 
-    return parse_version(last_release_version)
+    return None

tests/version/test_helper.py

@@ -116,3 +116,20 @@ def test_get_last_release_version_with_git_prefix(
         git_interface = _git_interface_mock.return_value
         git_interface.list_tags.return_value = ["v1", "v2", "v3.55"]
         self.assertEqual(get_last_release_version("v"), Version("3.55"))
+
+    @patch("pontos.version.helper.Git", spec=Git)
+    def test_get_last_release_version_ignore_pre_releases(
+        self, _git_interface_mock
+    ):
+        git_interface = _git_interface_mock.return_value
+        git_interface.list_tags.return_value = [
+            "1",
+            "2",
+            "3.55a1",
+            "3.56.dev1",
+            "4.0.0rc1",
+            "4.0.1b1",
+        ]
+        self.assertEqual(
+            get_last_release_version(ignore_pre_releases=True), Version("2")
+        )