chore: init from code-review-graph-main snapshot (v2.3.7)

tests/fixtures/test_sample.py

@@ -0,0 +1,19 @@
+"""Tests for sample_python.py - used to verify TESTED_BY edge detection."""
+
+from tests.fixtures.sample_python import AuthService, process_request
+
+
+def test_authenticate_valid():
+    service = AuthService("test", "secret123")
+    assert service.authenticate("secret123") is True
+
+
+def test_authenticate_invalid():
+    service = AuthService("test", "secret123")
+    assert service.authenticate("wrong") is False
+
+
+def test_process_request_ok():
+    service = AuthService("test", "secret123")
+    result = process_request(service, "secret123")
+    assert result["status"] == "ok"