Redesign test framework: fix conftest, rewrite all tests, fix model index conflicts, fix black formatting

Agent-Logs-Url: https://github.com/christianlouis/dmarq/sessions/9d256101-34b6-4861-a8cf-7f86f32b54d5

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

backend/app/tests/test_report_store.py

@@ -0,0 +1,79 @@
+from app.services.report_store import ReportStore
+
+
+def _sample_report(domain: str = "example.com") -> dict:
+    """Return a minimal parsed report dict for testing."""
+    return {
+        "domain": domain,
+        "report_id": "rpt-001",
+        "org_name": "google.com",
+        "begin_date": "2020-08-15T00:00:00",
+        "end_date": "2020-08-15T23:59:59",
+        "begin_timestamp": 1597449600,
+        "end_timestamp": 1597535999,
+        "policy": {"p": "none", "sp": "none", "pct": "100"},
+        "records": [
+            {
+                "source_ip": "203.0.113.1",
+                "count": 5,
+                "disposition": "none",
+                "dkim_result": "pass",
+                "spf_result": "fail",
+                "header_from": domain,
+            }
+        ],
+        "summary": {
+            "total_count": 5,
+            "passed_count": 5,
+            "failed_count": 0,
+            "pass_rate": 100.0,
+        },
+    }
+
+
+class TestReportStore:
+    """Tests for the in-memory ReportStore."""
+
+    def test_add_report_creates_domain(self):
+        store = ReportStore.get_instance()
+        store.add_report(_sample_report("test.com"))
+
+        domains = store.get_domains()
+        assert "test.com" in domains
+
+    def test_domain_summary_after_add(self):
+        store = ReportStore.get_instance()
+        store.add_report(_sample_report("test.com"))
+
+        summary = store.get_domain_summary("test.com")
+        assert summary["total_count"] == 5
+        assert summary["passed_count"] == 5
+        assert summary["reports_processed"] == 1
+
+    def test_get_domain_reports(self):
+        store = ReportStore.get_instance()
+        store.add_report(_sample_report("test.com"))
+
+        reports = store.get_domain_reports("test.com")
+        assert len(reports) == 1
+        assert reports[0]["report_id"] == "rpt-001"
+
+    def test_clear(self):
+        store = ReportStore.get_instance()
+        store.add_report(_sample_report("test.com"))
+        store.clear()
+
+        assert store.get_domains() == []
+
+    def test_delete_domain(self):
+        store = ReportStore.get_instance()
+        store.add_report(_sample_report("test.com"))
+        store.add_report(_sample_report("other.com"))
+
+        assert store.delete_domain_with_cleanup("test.com") is True
+        assert "test.com" not in store.get_domains()
+        assert "other.com" in store.get_domains()
+
+    def test_delete_nonexistent_domain(self):
+        store = ReportStore.get_instance()
+        assert store.delete_domain_with_cleanup("nope.com") is False