/**
* Property-Based Tests for Response Formats
* Tests correctness properties for MCP server responses
*/
import { describe, it, expect } from 'vitest';
import fc from 'fast-check';
// Type definitions for testing
interface DatasetSearchResult {
id: string;
name: string;
description: string;
category?: string;
}
/**
* Generator for valid 4x4 dataset IDs
*/
const alphanumeric = fc.constantFrom(...'abcdefghijklmnopqrstuvwxyz0123456789'.split(''));
const valid4x4Id = fc
.tuple(
fc.array(alphanumeric, { minLength: 4, maxLength: 4 }),
fc.array(alphanumeric, { minLength: 4, maxLength: 4 })
)
.map(([a, b]) => `${a.join('')}-${b.join('')}`);
/**
* Generator for search results
*/
const searchResult = fc.record({
id: valid4x4Id,
name: fc.string({ minLength: 1 }),
description: fc.string(),
category: fc.option(fc.string(), { nil: undefined }),
});
describe('Response Format Properties', () => {
/**
* **Feature: datasf-mcp-server, Property 1: Search results contain required fields**
* **Validates: Requirements 1.1**
*
* For any search query that returns results, each result object SHALL contain
* non-null `id`, `name`, and `description` fields.
*/
it('Property 1: Search results contain required fields', () => {
fc.assert(
fc.property(
fc.array(searchResult, { minLength: 1, maxLength: 20 }),
(results) => {
// Verify each result has required fields
return results.every(
(result) =>
result.id !== null &&
result.id !== undefined &&
typeof result.id === 'string' &&
result.id.length > 0 &&
result.name !== null &&
result.name !== undefined &&
typeof result.name === 'string' &&
result.name.length > 0 &&
result.description !== null &&
result.description !== undefined &&
typeof result.description === 'string'
);
}
),
{ numRuns: 100 }
);
});
/**
* **Feature: datasf-mcp-server, Property 2: Search results respect configured limit**
* **Validates: Requirements 1.2**
*
* For any search operation with a specified limit, the number of returned results
* SHALL be less than or equal to that limit.
*/
it('Property 2: Search results respect configured limit', () => {
fc.assert(
fc.property(
fc.integer({ min: 1, max: 20 }), // limit
fc.array(searchResult, { minLength: 0, maxLength: 100 }), // available results
(limit, availableResults) => {
// Simulate limiting the results
const limitedResults = availableResults.slice(0, limit);
// Verify the number of returned results is <= limit
return limitedResults.length <= limit;
}
),
{ numRuns: 100 }
);
});
});
