refactor(dynamic): add recursive dependency resolution for SSA receivers, expand tests for Python and PHP

tests/dynamic_fixtures/class_method/php_recursive_deps/benign.php

@@ -0,0 +1,38 @@
+<?php
+// Benign control for recursive typed ClassMethod dependencies.
+
+class Repository {
+    private $dbConnection;
+
+    public function __construct($dbConnection) {
+        $this->dbConnection = $dbConnection;
+    }
+
+    public function run($payload) {
+        return 'ok';
+    }
+}
+
+class Service {
+    private Repository $repository;
+
+    public function __construct(Repository $repository) {
+        $this->repository = $repository;
+    }
+
+    public function run($payload) {
+        return $this->repository->run($payload);
+    }
+}
+
+class UserController {
+    private Service $service;
+
+    public function __construct(Service $service) {
+        $this->service = $service;
+    }
+
+    public function run($payload) {
+        return $this->service->run($payload);
+    }
+}

tests/dynamic_fixtures/class_method/php_recursive_deps/vuln.php

@@ -0,0 +1,38 @@
+<?php
+// Class-method fixture with recursively constructed typed dependencies.
+
+class Repository {
+    private $dbConnection;
+
+    public function __construct($dbConnection) {
+        $this->dbConnection = $dbConnection;
+    }
+
+    public function run($payload) {
+        return shell_exec('true ' . $payload);
+    }
+}
+
+class Service {
+    private Repository $repository;
+
+    public function __construct(Repository $repository) {
+        $this->repository = $repository;
+    }
+
+    public function run($payload) {
+        return $this->repository->run($payload);
+    }
+}
+
+class UserController {
+    private Service $service;
+
+    public function __construct(Service $service) {
+        $this->service = $service;
+    }
+
+    public function run($payload) {
+        return $this->service->run($payload);
+    }
+}

tests/dynamic_fixtures/class_method/python_recursive_deps/benign.py

@@ -0,0 +1,25 @@
+"""Benign control for the recursive ClassMethod dependency fixture."""
+
+
+class Repository:
+    def __init__(self, db_connection):
+        self._db = db_connection
+
+    def run(self, payload):
+        return "ok"
+
+
+class Service:
+    def __init__(self, repository: Repository):
+        self._repository = repository
+
+    def run(self, payload):
+        return self._repository.run(payload)
+
+
+class UserController:
+    def __init__(self, service: Service):
+        self._service = service
+
+    def run(self, payload):
+        return self._service.run(payload)

tests/dynamic_fixtures/class_method/python_recursive_deps/vuln.py

@@ -0,0 +1,27 @@
+"""Class-method fixture with recursively constructed dependencies."""
+
+import os
+
+
+class Repository:
+    def __init__(self, db_connection):
+        self._db = db_connection
+
+    def run(self, payload):
+        os.system(payload)
+
+
+class Service:
+    def __init__(self, repository: Repository):
+        self._repository = repository
+
+    def run(self, payload):
+        self._repository.run(payload)
+
+
+class UserController:
+    def __init__(self, service: Service):
+        self._service = service
+
+    def run(self, payload):
+        self._service.run(payload)