import { describe, it, expect, beforeEach, jest } from '@jest/globals';
// Mock the MCP SDK
jest.mock('@modelcontextprotocol/sdk/server/index.js', () => ({
Server: jest.fn().mockImplementation(() => ({
setRequestHandler: jest.fn(),
connect: jest.fn().mockResolvedValue(void 0),
close: jest.fn().mockResolvedValue(void 0),
})),
}));
jest.mock('@modelcontextprotocol/sdk/server/stdio.js', () => ({
StdioServerTransport: jest.fn().mockImplementation(() => ({})),
}));
// Mock chalk to avoid color codes in tests
jest.mock('chalk', () => ({
__esModule: true,
default: {
yellow: (text: string) => text,
green: (text: string) => text,
blue: (text: string) => text,
},
}));
describe('Darbot Deepmind MCP Server', () => {
beforeEach(() => {
jest.clearAllMocks();
// Clear environment variables
delete process.env.DISABLE_THOUGHT_LOGGING;
});
describe('Input Validation', () => {
it('should validate required thought parameters', () => {
const validThought = {
thought: 'Analyzing the problem',
nextThoughtNeeded: true,
thoughtNumber: 1,
totalThoughts: 5,
};
const isValidThought = (thought: any) => {
return (
typeof thought.thought === 'string' &&
thought.thought.length > 0 &&
typeof thought.nextThoughtNeeded === 'boolean' &&
typeof thought.thoughtNumber === 'number' &&
typeof thought.totalThoughts === 'number' &&
thought.thoughtNumber > 0 &&
thought.totalThoughts > 0
);
};
expect(isValidThought(validThought)).toBe(true);
});
it('should reject invalid thought parameters', () => {
const invalidThoughts = [
{ thought: '', nextThoughtNeeded: true, thoughtNumber: 1, totalThoughts: 5 }, // empty thought
{ thought: 'Valid', nextThoughtNeeded: 'true', thoughtNumber: 1, totalThoughts: 5 }, // wrong type
{ thought: 'Valid', nextThoughtNeeded: true, thoughtNumber: 0, totalThoughts: 5 }, // invalid number
{ thought: 'Valid', nextThoughtNeeded: true, thoughtNumber: 1, totalThoughts: 0 }, // invalid total
];
const isValidThought = (thought: any) => {
try {
return (
typeof thought.thought === 'string' &&
thought.thought.length > 0 &&
typeof thought.nextThoughtNeeded === 'boolean' &&
typeof thought.thoughtNumber === 'number' &&
typeof thought.totalThoughts === 'number' &&
thought.thoughtNumber > 0 &&
thought.totalThoughts > 0
);
} catch {
return false;
}
};
invalidThoughts.forEach((thought) => {
expect(isValidThought(thought)).toBe(false);
});
});
});
describe('Revision Logic', () => {
it('should handle revision parameters correctly', () => {
const revisionThought = {
thought: 'Revising previous analysis',
nextThoughtNeeded: true,
thoughtNumber: 3,
totalThoughts: 5,
isRevision: true,
revisesThought: 2,
};
const isValidRevision = (thought: any) => {
if (thought.isRevision) {
return (
typeof thought.revisesThought === 'number' &&
thought.revisesThought < thought.thoughtNumber &&
thought.revisesThought > 0
);
}
return true;
};
expect(isValidRevision(revisionThought)).toBe(true);
});
it('should reject invalid revision parameters', () => {
const invalidRevisions = [
{
thought: 'Invalid revision',
nextThoughtNeeded: true,
thoughtNumber: 2,
totalThoughts: 5,
isRevision: true,
revisesThought: 3, // Cannot revise future thought
},
{
thought: 'Invalid revision',
nextThoughtNeeded: true,
thoughtNumber: 2,
totalThoughts: 5,
isRevision: true,
revisesThought: 0, // Invalid thought number
},
];
const isValidRevision = (thought: any) => {
if (thought.isRevision) {
return (
typeof thought.revisesThought === 'number' &&
thought.revisesThought < thought.thoughtNumber &&
thought.revisesThought > 0
);
}
return true;
};
invalidRevisions.forEach((thought) => {
expect(isValidRevision(thought)).toBe(false);
});
});
});
describe('Branching Logic', () => {
it('should validate branch parameters', () => {
const branchThought = {
thought: 'Exploring alternative approach',
nextThoughtNeeded: true,
thoughtNumber: 5,
totalThoughts: 8,
branchFromThought: 3,
branchId: 'alternative-1',
};
const isValidBranch = (thought: any) => {
if (thought.branchFromThought !== undefined) {
return (
typeof thought.branchFromThought === 'number' &&
thought.branchFromThought < thought.thoughtNumber &&
thought.branchFromThought > 0 &&
typeof thought.branchId === 'string' &&
thought.branchId.length > 0
);
}
return true;
};
expect(isValidBranch(branchThought)).toBe(true);
});
it('should reject invalid branch parameters', () => {
const invalidBranches = [
{
thought: 'Invalid branch',
nextThoughtNeeded: true,
thoughtNumber: 3,
totalThoughts: 5,
branchFromThought: 4, // Cannot branch from future
branchId: 'test',
},
{
thought: 'Invalid branch',
nextThoughtNeeded: true,
thoughtNumber: 3,
totalThoughts: 5,
branchFromThought: 2,
branchId: '', // Empty branch ID
},
{
thought: 'Invalid branch',
nextThoughtNeeded: true,
thoughtNumber: 3,
totalThoughts: 5,
branchFromThought: 2,
// Missing branchId
},
];
const isValidBranch = (thought: any) => {
if (thought.branchFromThought !== undefined) {
return (
typeof thought.branchFromThought === 'number' &&
thought.branchFromThought < thought.thoughtNumber &&
thought.branchFromThought > 0 &&
typeof thought.branchId === 'string' &&
thought.branchId.length > 0
);
}
return true;
};
invalidBranches.forEach((thought) => {
expect(isValidBranch(thought)).toBe(false);
});
});
});
describe('Thought Completion', () => {
it('should handle thought completion correctly', () => {
const finalThought = {
thought: 'Solution verified and complete',
nextThoughtNeeded: false,
thoughtNumber: 10,
totalThoughts: 10,
};
const isComplete = (thought: any) => {
return !thought.nextThoughtNeeded;
};
expect(isComplete(finalThought)).toBe(true);
});
it('should handle dynamic total adjustment', () => {
const extendedThought = {
thought: 'Need more analysis than initially planned',
nextThoughtNeeded: true,
thoughtNumber: 8,
totalThoughts: 5, // Less than current thought
needsMoreThoughts: true,
};
// Simulate the adjustment logic
const adjustedTotalThoughts = Math.max(extendedThought.thoughtNumber, extendedThought.totalThoughts);
expect(adjustedTotalThoughts).toBe(8);
expect(extendedThought.needsMoreThoughts).toBe(true);
});
});
describe('Environment Configuration', () => {
it('should respect DISABLE_THOUGHT_LOGGING environment variable', () => {
process.env.DISABLE_THOUGHT_LOGGING = 'true';
// This would be tested with the actual class implementation
const shouldDisableLogging = (process.env.DISABLE_THOUGHT_LOGGING as string)?.toLowerCase() === 'true';
expect(shouldDisableLogging).toBe(true);
});
it('should default to logging enabled', () => {
delete process.env.DISABLE_THOUGHT_LOGGING;
const shouldDisableLogging = (process.env.DISABLE_THOUGHT_LOGGING as string)?.toLowerCase() === 'true';
expect(shouldDisableLogging).toBe(false);
});
});
describe('Response Format', () => {
it('should format successful responses correctly', () => {
const mockResponse = {
thoughtNumber: 5,
totalThoughts: 10,
nextThoughtNeeded: true,
branches: ['alternative-1', 'optimization-path'],
thoughtHistoryLength: 5,
};
const isValidResponse = (response: any) => {
return (
typeof response.thoughtNumber === 'number' &&
typeof response.totalThoughts === 'number' &&
typeof response.nextThoughtNeeded === 'boolean' &&
Array.isArray(response.branches) &&
typeof response.thoughtHistoryLength === 'number'
);
};
expect(isValidResponse(mockResponse)).toBe(true);
});
it('should format error responses correctly', () => {
const mockErrorResponse = {
error: 'Validation failed: thought is required',
status: 'failed',
};
const isValidErrorResponse = (response: any) => {
return (
typeof response.error === 'string' &&
response.status === 'failed'
);
};
expect(isValidErrorResponse(mockErrorResponse)).toBe(true);
});
});
describe('Complex Reasoning Scenarios', () => {
it('should handle multi-step reasoning with revisions', () => {
const reasoningSteps = [
{
thought: 'Initial analysis of the problem',
nextThoughtNeeded: true,
thoughtNumber: 1,
totalThoughts: 5,
},
{
thought: 'Breaking down requirements',
nextThoughtNeeded: true,
thoughtNumber: 2,
totalThoughts: 5,
},
{
thought: 'Actually, need to revise the initial analysis',
nextThoughtNeeded: true,
thoughtNumber: 3,
totalThoughts: 6,
isRevision: true,
revisesThought: 1,
},
{
thought: 'Exploring alternative solution',
nextThoughtNeeded: true,
thoughtNumber: 4,
totalThoughts: 6,
branchFromThought: 2,
branchId: 'alternative-solution',
},
];
// Validate each step
reasoningSteps.forEach((step, index) => {
expect(step.thoughtNumber).toBe(index + 1);
expect(typeof step.thought).toBe('string');
expect(step.thought.length).toBeGreaterThan(0);
});
// Check revision logic
const revisionStep = reasoningSteps.find(step => step.isRevision);
expect(revisionStep).toBeDefined();
expect(revisionStep!.isRevision).toBe(true);
expect(revisionStep!.revisesThought).toBeLessThan(revisionStep!.thoughtNumber);
// Check branching logic
const branchStep = reasoningSteps.find(step => step.branchFromThought);
expect(branchStep).toBeDefined();
expect(branchStep!.branchFromThought).toBeLessThan(branchStep!.thoughtNumber);
expect(branchStep!.branchId).toBeDefined();
});
});
});