test: adding new tests and updating existing ones

tests/fetchers/async/test_requests_session.py

@@ -0,0 +1,17 @@
+import pytest
+
+
+from scrapling.engines.static import AsyncFetcherClient
+
+
+class TestFetcherSession:
+    """Test FetcherSession functionality"""
+
+    def test_async_fetcher_client_creation(self):
+        """Test AsyncFetcherClient creation"""
+        client = AsyncFetcherClient()
+
+        # Should not have context manager methods
+        assert client.__aenter__ is None
+        assert client.__aexit__ is None
+        assert client._async_curl_session is True  # Special marker