feat: tests/code for claim

Author: hstove

contrib/core-contract-tests/contracts/sip-031-indirect.clar

@@ -2,5 +2,20 @@
 ;; from an outside contract.
 
 (define-public (update-recipient (new-recipient principal))
-  (contract-call? 'ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.sip-031 update-recipient new-recipient)
-)
+  (contract-call? 'ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.sip-031
+    update-recipient new-recipient
+  )
+)
+
+;; Helper function to transfer STX within tests
+(define-public (transfer-stx
+    (amount uint)
+    (recipient principal)
+  )
+  (stx-transfer? amount tx-sender recipient)
+)
+
+;; Helper function to get the STX balance of an address
+(define-read-only (get-balance (addr principal))
+  (stx-get-balance addr)
+)