import { Test, TestingModule } from '@nestjs/testing';
import { ExplainTool } from './explain.tool';
import { DocsService } from '../docs/docs.service';
describe('ExplainTool', () => {
let tool: ExplainTool;
let docsService: DocsService;
beforeEach(async () => {
const module: TestingModule = await Test.createTestingModule({
providers: [
ExplainTool,
{
provide: DocsService,
useValue: {
loadDoc: jest.fn(),
},
},
],
}).compile();
tool = module.get<ExplainTool>(ExplainTool);
docsService = module.get<DocsService>(DocsService);
});
it('should return documentation content', async () => {
const mockDoc = {
title: 'Hooks',
content: '<h1>Hooks are great</h1>',
source_path: '/path/to/react',
};
(docsService.loadDoc as jest.Mock).mockResolvedValue(mockDoc);
const result = await tool.execute({ docId: 'react/hooks' });
expect(result).toMatchObject({
title: 'Hooks',
});
expect(result.content).toContain('Hooks are great');
});
it('should throw error if doc not found', async () => {
(docsService.loadDoc as jest.Mock).mockRejectedValue(new Error('Doc not found'));
await expect(tool.execute({ docId: 'invalid' })).rejects.toThrow('Doc not found');
});
});
