Add: Add a function to split a repository string into owner name tuple

GitHub always uses the owner/name combination for defining the
repository. Therefore add a function that converts this repository into
a owner name (space project) tuple.

pontos/release/helper.py

@@ -127,3 +127,15 @@ def get_next_release_version(
         return calculator.next_release_candidate_version(last_release_version)
 
     raise VersionError(f"Unsupported release type {release_type.value}.")
+
+
+def repository_split(repository: str) -> tuple[str, str]:
+    """
+    Split a GitHub repository (owner/name) into a space, project tuple
+    """
+    splitted_repo = repository.split("/")
+    if len(splitted_repo) != 2:
+        raise ValueError(
+            f"Invalid repository {repository}. Format must be " "owner/name."
+        )
+    return splitted_repo[0], splitted_repo[1]

tests/release/test_helper.py

@@ -17,6 +17,7 @@
     find_signing_key,
     get_git_repository_name,
     get_next_release_version,
+    repository_split,
 )
 from pontos.testing import temp_git_repository
 from pontos.version import VersionError
@@ -293,3 +294,24 @@ def test_release_version_with_invalid_release_type(self):
                 release_type=ReleaseType.ALPHA,
                 release_version=release_version,
             )
+
+
+class RepositorySplitTestCase(unittest.TestCase):
+    def test_invalid_repository(self):
+        with self.assertRaisesRegex(
+            ValueError,
+            r"Invalid repository foo/bar/baz. Format must be owner/name.",
+        ):
+            repository_split("foo/bar/baz")
+
+        with self.assertRaisesRegex(
+            ValueError,
+            r"Invalid repository foo_bar_baz. Format must be owner/name.",
+        ):
+            repository_split("foo_bar_baz")
+
+    def test_repository(self):
+        space, project = repository_split("foo/bar")
+
+        self.assertEqual(space, "foo")
+        self.assertEqual(project, "bar")