[pitboss] phase 19: Track M.1 — ClassMethod end-to-end (all langs)

tests/dynamic_fixtures/class_method/python_with_deps/vuln.py

@@ -0,0 +1,29 @@
+"""Phase 19 (Track M.1) — class-method vuln with constructor deps.
+
+`UserController.__init__` takes an HTTP client + a database connection
+(controller → service → repository shape).  The Phase 19 harness's
+`_nyx_build_receiver` walks the ctor formals, stubs each with the
+matching `Mock*` test double from `src/dynamic/stubs/mocks.rs`, and
+invokes the sink method.
+"""
+import sqlite3
+
+
+class UserController:
+    def __init__(self, http_client, db_connection):
+        # Phase 19 harness wires MockHttpClient + MockDatabaseConnection
+        # through these two formals so the ctor returns without I/O.
+        self._http = http_client
+        self._db = db_connection or sqlite3.connect(":memory:")
+
+    def search(self, query):
+        cur = self._db.cursor() if hasattr(self._db, "cursor") else None
+        if cur is None:
+            return None
+        # SINK: concatenated SQL
+        sql = "SELECT 1 FROM dual WHERE x = '" + query + "'"
+        try:
+            cur.execute(sql)
+        except Exception:
+            pass
+        return None