update CLAUDE.md

Author: fubhy

CLAUDE.md

@@ -24,7 +24,7 @@ Graph Node is a Rust-based decentralized blockchain indexing protocol that enabl
 cargo test --workspace --exclude graph-tests
 
 # Run specific tests
-cargo test --package graph data_source::common::tests
+cargo test -p graph data_source::common::tests
 cargo test <specific_test_name>
 ```
 
@@ -47,7 +47,10 @@ Integration tests require external services and are more complex to run than uni
 **Running Integration Tests:**
 ```bash
 # Run all integration tests
-cargo test --package graph-tests --test integration_tests -- --nocapture
+cargo test -p graph-tests --test integration_tests -- --nocapture
+
+# Run a specific integration test case (e.g., "grafted" test case)
+TEST_CASE=grafted cargo test -p graph-tests --test integration_tests -- --nocapture
 ```
 
 **Important Notes:**