Midnight MCP Server

# Test Case 2: Payment With Wrong Amount ## Description Test behavior when a transaction is received from a valid sender but the amount is incorrect. ## Requirements - On-chain transaction with incorrect amount - Amount mismatch should be detected in off-chain logic ## Sequence Diagram ```mermaid sequenceDiagram participant JEST as Jest Test participant WALLET as Wallet Server participant SERVICE as Wallet Service participant BLOCKCHAIN as Blockchain participant AGENT as Registered Agent JEST->>WALLET: GET /wallet/balance WALLET-->>JEST: Initial Balance Note over JEST,AGENT: Setup: Agent is registered AGENT->>BLOCKCHAIN: Send Payment (Incorrect Amount) BLOCKCHAIN->>SERVICE: Transaction Received SERVICE->>SERVICE: Validate Sender Registration SERVICE->>SERVICE: Validate Amount Note over SERVICE: Amount mismatch detected SERVICE-->>WALLET: Payment Rejected WALLET-->>JEST: Payment Rejected Error JEST->>WALLET: GET /wallet/balance WALLET-->>JEST: Unchanged Balance Note over JEST: Assert: Balance unchanged Note over JEST: Assert: Error indicates amount mismatch ``` ## Test Flow ```mermaid graph TD START[Test Start] --> CHECK_BALANCE[Check Initial Balance] CHECK_BALANCE --> VERIFY_REGISTRATION[Verify Agent Registration] VERIFY_REGISTRATION --> SEND_PAYMENT[Agent Sends Payment with Wrong Amount] SEND_PAYMENT --> RECEIVE_TX[Receive Transaction] RECEIVE_TX --> VALIDATE_SENDER[Validate Sender Registration] VALIDATE_SENDER --> SENDER_VALID{Sender<br/>Registered?} SENDER_VALID -->|No| REJECT_SENDER[Reject - Unregistered Sender] SENDER_VALID -->|Yes| VALIDATE_AMOUNT[Validate Amount] VALIDATE_AMOUNT --> AMOUNT_VALID{Amount<br/>Correct?} AMOUNT_VALID -->|Yes| ACCEPT_PAYMENT[Accept Payment - Unexpected] AMOUNT_VALID -->|No| REJECT_AMOUNT[Reject - Wrong Amount] REJECT_AMOUNT --> ASSERT_SUCCESS[Assert Success - Expected] ACCEPT_PAYMENT --> ASSERT_FAILURE[Assert Failure - Unexpected] REJECT_SENDER --> ASSERT_FAILURE ASSERT_SUCCESS --> END[Test End] ASSERT_FAILURE --> END style START fill:#e1f5fe style ASSERT_SUCCESS fill:#e8f5e8 style ASSERT_FAILURE fill:#ffebee style SENDER_VALID fill:#fff3e0 style AMOUNT_VALID fill:#f3e5f5 ``` ## HTTP API Calls ```mermaid graph LR JEST[Jest Test] --> GET_BALANCE[GET /wallet/balance] JEST --> GET_TRANSACTION[GET /wallet/transaction/{id}] JEST --> GET_AGENT_INFO[GET /wallet/agent/{address}] JEST --> GET_ERROR[GET /wallet/error/{txId}] GET_BALANCE --> WALLET[Wallet Server] GET_TRANSACTION --> WALLET GET_AGENT_INFO --> WALLET GET_ERROR --> WALLET WALLET --> SERVICE[Wallet Service] SERVICE --> BLOCKCHAIN[Blockchain] style JEST fill:#e1f5fe style WALLET fill:#fff3e0 style SERVICE fill:#f3e5f5 style BLOCKCHAIN fill:#e8f5e8 ``` ## Amount Validation Logic ```mermaid graph TD PAYMENT[Payment Received] --> EXTRACT_AMOUNT[Extract Amount] EXTRACT_AMOUNT --> EXPECTED_AMOUNT[Get Expected Amount] EXPECTED_AMOUNT --> COMPARE[Compare Amounts] COMPARE --> AMOUNT_MATCH{Amounts<br/>Match?} AMOUNT_MATCH -->|Yes| AMOUNT_OK[Amount Valid] AMOUNT_MATCH -->|No| AMOUNT_MISMATCH[Amount Mismatch] AMOUNT_OK --> PROCEED[Proceed with Payment] AMOUNT_MISMATCH --> CALCULATE_DIFF[Calculate Difference] CALCULATE_DIFF --> DIFF_TYPE{Difference<br/>Type?} DIFF_TYPE -->|Too High| REJECT_HIGH[Reject - Too High] DIFF_TYPE -->|Too Low| REJECT_LOW[Reject - Too Low] REJECT_HIGH --> ERROR_HIGH[Error: Amount Too High] REJECT_LOW --> ERROR_LOW[Error: Amount Too Low] PROCEED --> SUCCESS[Payment Success] ERROR_HIGH --> FAILURE[Payment Failed] ERROR_LOW --> FAILURE style PAYMENT fill:#e1f5fe style SUCCESS fill:#e8f5e8 style FAILURE fill:#ffebee style AMOUNT_MATCH fill:#fff3e0 style DIFF_TYPE fill:#f3e5f5 ``` ## Error Handling Flow ```mermaid graph TD ERROR[Amount Mismatch Error] --> ERROR_TYPE{Error<br/>Type?} ERROR_TYPE -->|Amount Too High| HANDLE_HIGH[Handle High Amount] ERROR_TYPE -->|Amount Too Low| HANDLE_LOW[Handle Low Amount] ERROR_TYPE -->|Invalid Format| HANDLE_FORMAT[Handle Format Error] HANDLE_HIGH --> LOG_ERROR[Log Error Details] HANDLE_LOW --> LOG_ERROR HANDLE_FORMAT --> LOG_ERROR LOG_ERROR --> CREATE_RESPONSE[Create Error Response] CREATE_RESPONSE --> ERROR_CODE[Set Error Code] ERROR_CODE --> ERROR_MESSAGE[Set Error Message] ERROR_MESSAGE --> RETURN_ERROR[Return Error to Client] RETURN_ERROR --> CLIENT_RECEIVES[Client Receives Error] CLIENT_RECEIVES --> ASSERT_ERROR[Assert Correct Error] ASSERT_ERROR --> TEST_PASSES[Test Passes] style ERROR fill:#ffebee style TEST_PASSES fill:#e8f5e8 style ERROR_TYPE fill:#fff3e0 ``` ## Expected vs Actual Amount Comparison ```mermaid graph TD EXPECTED[Expected Amount] --> COMPARE[Compare with Actual] ACTUAL[Actual Amount] --> COMPARE COMPARE --> DIFFERENCE[Calculate Difference] DIFFERENCE --> TOLERANCE{Within<br/>Tolerance?} TOLERANCE -->|Yes| ACCEPT[Accept Payment] TOLERANCE -->|No| REJECT[Reject Payment] REJECT --> ERROR_TYPE{Error<br/>Type?} ERROR_TYPE -->|Too High| HIGH_ERROR[Amount Exceeds Expected] ERROR_TYPE -->|Too Low| LOW_ERROR[Amount Below Expected] HIGH_ERROR --> ERROR_RESPONSE[Return High Amount Error] LOW_ERROR --> ERROR_RESPONSE[Return Low Amount Error] ACCEPT --> SUCCESS[Payment Accepted] ERROR_RESPONSE --> FAILURE[Payment Rejected] style EXPECTED fill:#e1f5fe style ACTUAL fill:#fff3e0 style TOLERANCE fill:#f3e5f5 style SUCCESS fill:#e8f5e8 style FAILURE fill:#ffebee ```