add unit tests for request_context.py

backend/data/.api_key

@@ -0,0 +1 @@
+064fe8d7a9ceac7bc053699eab08e7fc9e2d21742664e5af7e572a60597aed5b

testing/backend/unit/test_request_context.py

@@ -0,0 +1,33 @@
+from backend.secuscan.request_context import (
+    get_request_id,
+    request_id_context,
+    set_request_id,
+)
+
+
+def test_set_request_id_override():
+    request_id = set_request_id("custom-id")
+
+    assert request_id == "custom-id"
+    assert get_request_id() == "custom-id"
+
+
+def test_set_request_id_generates_id(monkeypatch):
+    monkeypatch.setattr(
+        "backend.secuscan.request_context.uuid4",
+        lambda: "fixed-uuid",
+    )
+
+    request_id = set_request_id()
+
+    assert request_id == "fixed-uuid"
+    assert get_request_id() == "fixed-uuid"
+
+
+def test_get_request_id_default():
+    token = request_id_context.set("")
+
+    try:
+        assert get_request_id() == ""
+    finally:
+        request_id_context.reset(token)