Session 77.1: Comprehensive Test Suite Implementation

Date: January 31, 2026 Focus: Creating E2E and unit tests for MCP platform Status: Completed

Overview

Session 77.1 focused on building a comprehensive test suite for the GoGrab AI MCP platform. This ensures all 78 tools function correctly and handle edge cases gracefully.

Test Categories

1. Agent Workflows (agent-workflows.test.ts)

Location: MCP/mcp-gograb-ai/src/__tests__/e2e/agent-workflows.test.ts Test Count: 24 tests

Handoff Flow Tests

• Full handoff lifecycle (create → acknowledge → start → complete)
• Handoff rejection with reason and rerouting
• Handoff timeout/offline scenario with fallback queue
• Get handoff by ID
• Handle handoff not found (404)

Agent Messaging Tests

• Send direct message via REST when WebSocket disconnected
• Send direct message via WebSocket when connected
• Handle message send failure

RPC Flow Tests

• Successful RPC call via HTTP
• Successful RPC call via WebSocket
• RPC timeout handling
• Agent not found / unreachable
• RPC with complex parameters
• WebSocket RPC error response

Agent Discovery Tests

• Return capable agents with filtering
• Filter by capabilities
• Handle no agents available
• Handle discovery API failure
• Handle network error during discovery

Integration Scenarios

• Discover agent and make RPC call
• Handle handoff with follow-up RPC
• Fallback gracefully when all communication methods fail

Input Validation Tests

• Reject invalid call_agent input
• Reject invalid find_agents input

2. Automation Flows (automation-flows.test.ts)

Location: MCP/mcp-gograb-ai/src/__tests__/e2e/automation-flows.test.ts Test Count: 34 tests

Browser Automation Flow

• Complete browser workflow (navigate → extract → screenshot → close)
• Handle navigation errors gracefully
• Handle browser not available
• Handle network failure with graceful degradation
• Input validation errors
• Click element and fill form field
• Handle element not found
• Execute JavaScript and wait for result
• Handle wait timeout
• Report browser status and current page

Desktop Connectivity Flow

• Complete file operations (write → read → list)
• Reject access to unauthorized paths
• Handle file not found
• Handle network failure gracefully
• Execute allowed command successfully
• Block disallowed command
• Block command with blocked arguments
• Handle command timeout
• Pass working directory correctly
• Clipboard get/set operations
• Desktop service status

Security Enforcement Tests

• Block path traversal attempts
• Block symlink attacks
• Reject files exceeding size limit
• Block command injection in arguments
• Block pipe characters in commands
• Sanitize malicious browser scripts

Error Recovery Tests

• Recover from crashed browser session
• Validate URL format in browser_navigate
• Validate file path format

Integration Flow Tests

• Web scraping workflow (navigate → wait → extract → save)
• Form automation workflow (fill → submit → screenshot)

3. Workflow & Learning (workflow-learning.test.ts)

Location: MCP/mcp-gograb-ai/src/__tests__/e2e/workflow-learning.test.ts Test Count: 16 tests

Task Runner Workflow Tests

• Create and run multi-step workflow
• Handle task failure and stop workflow
• Respect task dependencies
• Create scheduled task
• List tasks by agent

Decision Learning Flow Tests

• Complete learning cycle (log → report → learn → extract)
• Detect anti-patterns from failures
• Predict outcomes based on historical data
• Track outcome with backend triggers
• Track module-specific outcomes
• Handle module failure and extract learnings
• Mine patterns from successful decisions

Full Pipeline Integration

• Complete decision → outcome → learning → pattern application cycle

Error Handling

• Handle backend unavailable gracefully
• Handle timeout gracefully
• Handle invalid workflow ID

4. Error Handling (error-handling.test.ts)

Location: MCP/mcp-gograb-ai/src/__tests__/unit/error-handling.test.ts Test Count: 28 tests

Invalid Parameters

• Missing required parameters in call_agent
• Missing required parameters in find_agents_for_task
• Missing required parameters in create_handoff
• Missing required parameters in respond_to_handoff
• Missing required parameters in send_agent_message
• Invalid parameter types
• Empty string parameters
• Null parameters

Network Errors

• Backend unavailable (503)
• Network failure (fetch throws)
• Timeout errors
• DNS resolution failure
• Connection refused
• Response body parse error

Authentication Errors

• 401 Unauthorized
• 403 Forbidden
• Invalid token response

Server Errors

• 500 Internal Server Error
• 502 Bad Gateway
• 504 Gateway Timeout

Edge Cases

• Very long parameter values
• Special characters in parameters
• Unicode in parameters
• Concurrent requests gracefully
• Circular reference in params (nested objects)

Fallback Behavior

• Fallback to offline queue when API fails
• Handle fallback failure gracefully

How to Run Tests

Run All MCP Tests

cd MCP/mcp-gograb-ai
npm test

Run Specific Test File

npm test -- --testPathPattern="agent-workflows"
npm test -- --testPathPattern="automation-flows"
npm test -- --testPathPattern="workflow-learning"
npm test -- --testPathPattern="error-handling"

Run with Coverage

npm test -- --coverage

Run in Watch Mode

npm test -- --watch

Test Coverage Metrics

Test Infrastructure

Mocking Strategy

• Global fetch mock: All HTTP requests are mocked using Jest's mockFetch
• WebSocket mock: realtimeClient methods are mocked for WebSocket testing
• Session mock: Session detector returns consistent test values
• Agent identity mock: Fixed agent ID for consistent test assertions

Test Helpers

// Create mock HTTP response
function createMockResponse<T>(data: T, ok = true, status = 200): Response

// Reset all mocks between tests
function resetMocks(): void

Key Testing Patterns

1. Happy Path First: Each test suite starts with successful workflow tests
2. Error Scenarios: Comprehensive error testing for each category
3. Edge Cases: Unicode, special characters, concurrent requests
4. Fallback Verification: Ensure offline queue works when API fails

Future Test Improvements

1. Integration Tests: Add tests that connect to real backend (separate test environment)
2. Performance Tests: Benchmark RPC latency and throughput
3. Load Tests: Simulate multiple concurrent agents
4. Chaos Tests: Random network failures, server restarts
5. Snapshot Tests: Capture expected response structures