import { describe, test, expect, mock } from 'bun:test';
import { mcpAction } from './mcp';

describe('mcpAction', () => {
    test('calls startMcpServer with correct params', async () => {
        const startFn = mock(() => Promise.resolve());
        await mcpAction({
            cliName: 'testcli',
            cliInvocation: ['node', 'testcli'],
            generatedDir: '/tmp/generated',
            routinesDir: '/tmp/routines',
            startMcpServer: startFn,
        });

        expect(startFn).toHaveBeenCalledWith({
            cliName: 'testcli',
            cliInvocation: ['node', 'testcli'],
            generatedDir: '/tmp/generated',
            routinesDir: '/tmp/routines',
        });
    });

    test('throws MODULE_NOT_FOUND as user-friendly message', () => {
        const err = new Error('Cannot find module');
        expect(mcpAction({
            cliName: 'testcli',
            cliInvocation: ['node', 'testcli'],
            generatedDir: '/tmp/generated',
            routinesDir: '/tmp/routines',
            startMcpServer: mock(() => Promise.reject(err)),
        })).rejects.toThrow('MCP server requires @modelcontextprotocol/sdk');
    });
});