test: add Delivery Excellence scorecard coverage

Author: mdheller

tests/test_scorecard.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+from sourceos_syncd.reports import snapshot
+from sourceos_syncd.scorecard import evaluate_scorecard, validate_scorecard
+
+
+def test_scorecard_ready_for_healthy_snapshot():
+    report = snapshot()
+    scorecard = evaluate_scorecard(report)
+    assert scorecard["schema"] == "sourceos.delivery-scorecard/v1alpha1"
+    assert scorecard["component"] == "sourceos-syncd"
+    assert scorecard["status"] in {"ready", "watch"}
+    assert 0 <= scorecard["score"] <= 100
+    assert validate_scorecard(scorecard) == []
+
+
+def test_scorecard_blocks_contract_errors():
+    report = snapshot()
+    del report["identity"]["node_id_hash"]
+    scorecard = evaluate_scorecard(report)
+    assert scorecard["status"] == "blocked"
+    assert any(gate["id"] == "contract.valid" and gate["status"] == "fail" for gate in scorecard["gates"])
+
+
+def test_scorecard_warns_on_unattested_state():
+    report = snapshot()
+    scorecard = evaluate_scorecard(report)
+    assert scorecard["dimensions"]["attestation_signed"] is False
+    assert scorecard["score"] <= 95
+
+
+def test_scorecard_validation_catches_bad_score():
+    report = snapshot()
+    scorecard = evaluate_scorecard(report)
+    scorecard["score"] = 101
+    errors = validate_scorecard(scorecard)
+    assert any("score" in error for error in errors)