Add function to diff github and gitea repos (#4)

Author: Muscaw

gitea_github_sync/migration.py

@@ -0,0 +1,10 @@
+from typing import List
+
+from gitea_github_sync.repository import Repository
+
+
+def list_missing_github_repos(
+    gh_repos: List[Repository], gitea_repos: List[Repository]
+) -> List[Repository]:
+    gitea_repos_by_name = [repo.get_repo_name() for repo in gitea_repos]
+    return [repo for repo in gh_repos if repo.get_repo_name() not in gitea_repos_by_name]

tests/test_migration.py

@@ -0,0 +1,49 @@
+from typing import List
+
+import pytest
+
+from gitea_github_sync.migration import list_missing_github_repos
+from gitea_github_sync.repository import Repository, Visibility
+
+
+def r(org_name: str, repo_name: str) -> Repository:
+    return Repository(full_repo_name=f"{org_name}/{repo_name}", visibility=Visibility.PUBLIC)
+
+
+def team_a_repo(repo_name: str) -> Repository:
+    return r(org_name="team-a", repo_name=repo_name)
+
+
+def team_b_repo(repo_name: str) -> Repository:
+    return r(org_name="team-b", repo_name=repo_name)
+
+
+@pytest.mark.parametrize(
+    "gh_repos, gt_repos, expected_diff",
+    [
+        pytest.param(
+            [team_a_repo("a-repo"), team_a_repo("b-repo")],
+            [team_b_repo("a-repo"), team_b_repo("b-repo")],
+            [],
+            id="equal",
+        ),
+        pytest.param(
+            [team_a_repo("a-repo"), team_a_repo("b-repo")],
+            [team_b_repo("a-repo")],
+            [team_a_repo("b-repo")],
+            id="missing-repo-on-gitea",
+        ),
+        pytest.param(
+            [team_a_repo("a-repo"), team_a_repo("b-repo")],
+            [team_b_repo("a-repo"), team_b_repo("b-repo"), team_b_repo("c-repo")],
+            [],
+            id="too-many-repos-on-gitea",
+        ),
+    ],
+)
+def test_list_missing_github_repos(
+    gh_repos: List[Repository], gt_repos: List[Repository], expected_diff: List[Repository]
+) -> None:
+    result = list_missing_github_repos(gh_repos=gh_repos, gitea_repos=gt_repos)
+
+    assert result == expected_diff