// src/utils/__tests__/response-helpers.test.ts
import { describe, it, expect } from 'vitest';
import {
createTextResponse,
createErrorResponse,
createErrorResponseFromError,
} from '../response-helpers.js';
describe('response-helpers', () => {
describe('createTextResponse', () => {
it('should return MCP-compliant text content', () => {
const result = createTextResponse('hello');
expect(result.content).toHaveLength(1);
expect(result.content[0].type).toBe('text');
expect(result.content[0].text).toBe('hello');
});
it('should not set isError', () => {
const result = createTextResponse('hello');
expect(result.isError).toBeUndefined();
});
});
describe('createErrorResponse', () => {
it('should set isError to true', () => {
const result = createErrorResponse('something went wrong');
expect(result.isError).toBe(true);
});
it('should prefix message with "Error: "', () => {
const result = createErrorResponse('not found');
expect(result.content[0].text).toBe('Error: not found');
});
it('should return MCP-compliant content structure', () => {
const result = createErrorResponse('fail');
expect(result.content).toHaveLength(1);
expect(result.content[0].type).toBe('text');
});
});
describe('createErrorResponseFromError', () => {
it('should handle Error objects', () => {
const result = createErrorResponseFromError(new Error('oops'));
expect(result.isError).toBe(true);
expect(result.content[0].text).toContain('oops');
});
it('should handle string errors', () => {
const result = createErrorResponseFromError('string error');
expect(result.isError).toBe(true);
expect(result.content[0].text).toContain('string error');
});
it('should handle unknown error types', () => {
const result = createErrorResponseFromError(42);
expect(result.isError).toBe(true);
expect(result.content[0].text).toBeDefined();
});
});
});
