fc3h(tests): drop pinned migration-backup tests (retired surface; coverage moved to test_backup_service.py + test_api_system_backup.py)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/test_api_migrate.py

@@ -31,17 +31,10 @@ async def client(app):
         yield c
 
 
-@pytest.mark.asyncio
-async def test_post_backup_returns_202_and_id(client, monkeypatch):
-    monkeypatch.setattr(
-        "backend.app.api.migrate.run_migration",
-        type("F", (), {"delay": lambda self, *a, **k: None})(),
-    )
-    resp = await client.post("/api/migrate/backup", json={})
-    assert resp.status_code == 202
-    body = await resp.get_json()
-    assert "run_id" in body
-    assert body["status"] == "pending"
+# Retired 2026-05-24 (FC-3h): `test_post_backup_returns_202_and_id`
+# asserted the /api/migrate/backup endpoint, which was retired in FC-3h.
+# Backup is now a first-class feature at /api/system/backup/*;
+# coverage lives in tests/test_api_system_backup.py.
 
 
 @pytest.mark.asyncio
@@ -62,10 +55,6 @@ async def test_post_ingest_rejects_missing_file(client):
 
 @pytest.mark.asyncio
 async def test_post_ingest_accepts_multipart_file(client, monkeypatch):
-    monkeypatch.setattr(
-        "backend.app.api.migrate._has_recent_pre_migration_backup",
-        lambda: True,  # pretend backup exists
-    )
     monkeypatch.setattr(
         "backend.app.api.migrate.run_migration",
         type("F", (), {"delay": lambda self, *a, **k: None})(),
@@ -92,10 +81,9 @@ async def test_post_ingest_accepts_multipart_file(client, monkeypatch):
 
 @pytest.mark.asyncio
 async def test_post_dry_run_allowed_without_backup(client, monkeypatch):
-    monkeypatch.setattr(
-        "backend.app.api.migrate._has_recent_pre_migration_backup",
-        lambda: False,
-    )
+    # FC-3h: the _has_recent_pre_migration_backup gate was retired; dry-run
+    # ingests were always allowed and now non-dry-run ingests are too.
+    # This test stays as regression coverage that dry_run ingest still works.
     monkeypatch.setattr(
         "backend.app.api.migrate.run_migration",
         type("F", (), {"delay": lambda self, *a, **k: None})(),

tests/test_migration_backup.py

@@ -1,64 +0,0 @@
-"""FC-5: backup + rollback service tests.
-
-Uses tmp_path to avoid touching real /images/_backups/. Subprocess
-calls (pg_dump, tar) are monkeypatched — the real shell-out is exercised
-in operator-side smoke testing on the homelab, not in unit tests.
-"""
-import pytest
-
-from backend.app.services.migrators import backup as backup_mod
-
-pytestmark = pytest.mark.integration
-
-
-@pytest.mark.asyncio
-async def test_create_backup_writes_sql_and_tar(monkeypatch, tmp_path):
-    calls = []
-
-    def fake_run(cmd, **kwargs):
-        calls.append(cmd)
-        # Touch the expected output file so existence checks pass downstream.
-        if "pg_dump" in cmd[0]:
-            outpath = tmp_path / "_backups" / f"fc_{kwargs['_test_ts']}.sql"
-            outpath.write_text("-- fake pg_dump output")
-        else:
-            outpath = tmp_path / "_backups" / f"fc_{kwargs['_test_ts']}.tar.zst"
-            outpath.write_bytes(b"\x28\xb5\x2f\xfd")  # zstd magic
-        from types import SimpleNamespace
-        return SimpleNamespace(returncode=0, stdout=b"", stderr=b"")
-
-    monkeypatch.setattr(backup_mod, "_run_subprocess", fake_run)
-
-    result = backup_mod.create_backup(
-        db_url="postgresql://x", images_root=tmp_path, tag="pre_migration",
-    )
-    assert "sql_path" in result
-    assert "tar_path" in result
-    assert result["tag"] == "pre_migration"
-    assert any("pg_dump" in c[0] for c in calls)
-    assert any(c[0] == "tar" for c in calls)
-
-
-@pytest.mark.asyncio
-async def test_find_latest_backup_by_tag(monkeypatch, tmp_path):
-    # Create two manifests with different tags.
-    backups_dir = tmp_path / "_backups"
-    backups_dir.mkdir()
-    import json
-    (backups_dir / "fc_20260101T000000Z.json").write_text(json.dumps({
-        "backup_id": "20260101T000000Z", "tag": "manual",
-        "created_at": "2026-01-01T00:00:00+00:00",
-        "sql_path": "/x/a.sql", "tar_path": "/x/a.tar.zst",
-    }))
-    (backups_dir / "fc_20260202T000000Z.json").write_text(json.dumps({
-        "backup_id": "20260202T000000Z", "tag": "pre_migration",
-        "created_at": "2026-02-02T00:00:00+00:00",
-        "sql_path": "/x/b.sql", "tar_path": "/x/b.tar.zst",
-    }))
-
-    found = backup_mod.find_latest_backup(tmp_path, tag="pre_migration")
-    assert found is not None
-    assert found["backup_id"] == "20260202T000000Z"
-
-    missing = backup_mod.find_latest_backup(tmp_path, tag="nonexistent")
-    assert missing is None