Add WebDAV backup push to backup_database

tests/scrobbles_tests/test_backup_database.py

@@ -0,0 +1,92 @@
+from datetime import datetime
+
+import pytest
+import time_machine
+from scrobbles import tasks as scrobbles_tasks
+
+
+class FakeWebDAVClient:
+    def __init__(self, files=None):
+        self.files = files if files is not None else {}
+        self.uploaded = []
+
+    def mkdir(self, path, recursive=False):
+        self.files.setdefault(path, None)
+
+    def upload_sync(self, remote_path, local_path):
+        with open(local_path, "rb") as f:
+            self.files[remote_path] = f.read()
+        self.uploaded.append(remote_path)
+
+    def list(self, remote_path, get_info=False):
+        names = [
+            k for k in self.files if k.startswith(remote_path) and k != remote_path
+        ]
+        if get_info:
+            return [{"path": n} for n in names]
+        return names
+
+    def clean(self, remote_path):
+        self.files.pop(remote_path, None)
+
+
+@pytest.fixture
+def fake_webdav_client():
+    return FakeWebDAVClient()
+
+
+def test_retention_files_to_delete_keeps_recent_and_monthly():
+    now = datetime(2026, 8, 10)
+    files = [
+        "vrobbler-backup-2026_08_10.sql.gz",
+        "vrobbler-backup-2026_08_09.sql.gz",
+        "vrobbler-backup-2026_08_01.sql.gz",
+        "vrobbler-backup-2026_07_31.sql.gz",
+        "vrobbler-backup-2026_07_01.sql.gz",
+        "vrobbler-backup-2026_06_15.sql.gz",
+        "vrobbler-backup-2026_06_02.sql.gz",
+        "not-a-backup.txt",
+    ]
+    to_delete = scrobbles_tasks._retention_files_to_delete(files, now)
+
+    assert "vrobbler-backup-2026_08_10.sql.gz" not in to_delete
+    assert "vrobbler-backup-2026_08_09.sql.gz" not in to_delete
+    assert "vrobbler-backup-2026_08_01.sql.gz" not in to_delete
+    assert "vrobbler-backup-2026_07_31.sql.gz" not in to_delete
+    assert "vrobbler-backup-2026_06_15.sql.gz" not in to_delete
+    assert "not-a-backup.txt" not in to_delete
+
+    assert "vrobbler-backup-2026_07_01.sql.gz" in to_delete
+    assert "vrobbler-backup-2026_06_02.sql.gz" in to_delete
+
+
+@time_machine.travel(datetime(2026, 8, 10))
+def test_run_webdav_cleanup_prunes_old_backups(fake_webdav_client):
+    path = "var/vrobbler-backups/"
+    fake_webdav_client.files = {
+        f"{path}vrobbler-backup-2026_08_10.sql.gz": b"new",
+        f"{path}vrobbler-backup-2026_07_31.sql.gz": b"monthly",
+        f"{path}vrobbler-backup-2026_07_01.sql.gz": b"old",
+    }
+
+    summary = scrobbles_tasks._run_webdav_cleanup(fake_webdav_client, path)
+
+    assert summary == "pruned 1 old webdav backup(s)"
+    assert f"{path}vrobbler-backup-2026_08_10.sql.gz" in fake_webdav_client.files
+    assert f"{path}vrobbler-backup-2026_07_31.sql.gz" in fake_webdav_client.files
+    assert f"{path}vrobbler-backup-2026_07_01.sql.gz" not in fake_webdav_client.files
+
+
+def test_run_webdav_cleanup_no_files(fake_webdav_client):
+    assert (
+        scrobbles_tasks._run_webdav_cleanup(fake_webdav_client, "var/vrobbler-backups/")
+        is None
+    )
+
+
+def test_run_webdav_cleanup_ignores_unrelated_files(fake_webdav_client):
+    path = "var/vrobbler-backups/"
+    fake_webdav_client.files = {
+        f"{path}notes.txt": b"x",
+    }
+    assert scrobbles_tasks._run_webdav_cleanup(fake_webdav_client, path) is None