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toHaveResource

Checks that an MCP server provides a resource with the specified name. This matcher works with MCPStdinSubprocess instances.

Syntax​

await expect(app).toHaveResource(resourceName);

Parameters​

  • resourceName: The name of the resource to check for

Example​

import { mcpShell } from 'expect-mcp';
import { test, expect } from 'vitest';

test('server provides configuration resources', async () => {
  const app = mcpShell('node config-server.js');
  await app.initialize();

  await expect(app).toHaveResource('app_config');
  await expect(app).toHaveResource('user_settings');

  app.close();
});

Error Messages​

If the resource doesn't exist:

await expect(app).toHaveResource('nonexistent_resource');
// Error: Expected server to have resource "nonexistent_resource", but it was not found.
// Available resources: app_config, user_settings, database_config

See Also​