import { describe, test, expect, beforeAll, afterAll } from 'bun:test' // Mock fetch directly — avoids flaky dependency on external hosts AND // pollution by other tests that call setGlobalDispatcher (proxy agents make // localhost fetches return 500 in the full-suite run). const realFetch = globalThis.fetch beforeAll(() => { globalThis.fetch = (async ( input: string | URL | Request, _init?: RequestInit, ) => { const url = typeof input === 'string' ? input : input.toString() if (url === 'not-a-url' || !url.startsWith('http')) { throw new TypeError('Failed to fetch') } const body = 'Example Domain' + '

Example Domain

Sample content.

' const res = new Response(body, { status: 200, headers: { 'content-type': 'text/html' }, }) // Make response.url match the request URL so tests can assert on it. Object.defineProperty(res, 'url', { value: url, configurable: true }) return res }) as typeof fetch }) afterAll(() => { globalThis.fetch = realFetch }) describe('WebBrowserTool', () => { test('tool exports and metadata', async () => { const { WebBrowserTool } = await import('../WebBrowserTool.js') expect(WebBrowserTool).toBeDefined() expect(WebBrowserTool.name).toBe('WebBrowser') expect(typeof WebBrowserTool.call).toBe('function') expect(WebBrowserTool.userFacingName()).toBe('Browser') expect(WebBrowserTool.isReadOnly()).toBe(true) }) test('description reflects browser-lite', async () => { const { WebBrowserTool } = await import('../WebBrowserTool.js') const desc = await WebBrowserTool.description() expect(desc).toContain('HTTP') expect(desc).not.toContain('embedded browser') }) test('prompt mentions limitations', async () => { const { WebBrowserTool } = await import('../WebBrowserTool.js') const prompt = await WebBrowserTool.prompt() expect(prompt).toContain('Limitations') expect(prompt).toContain('No JavaScript') expect(prompt).toContain('Claude-in-Chrome') }) test('navigate fetches URL', async () => { const { WebBrowserTool } = await import('../WebBrowserTool.js') const result = await WebBrowserTool.call({ url: 'https://example.com', } as any) expect(result.data.title).toBe('Example Domain') expect(result.data.url).toContain('example.com') expect(result.data.content).toContain('Example Domain') }, 15000) test('screenshot returns text snapshot', async () => { const { WebBrowserTool } = await import('../WebBrowserTool.js') const result = await WebBrowserTool.call({ url: 'https://example.com', action: 'screenshot', } as any) expect(result.data.content).toContain('Text snapshot') expect(result.data.content).toContain('Example Domain') }, 15000) test('schema only allows navigate and screenshot', async () => { const { WebBrowserTool } = await import('../WebBrowserTool.js') const schema = WebBrowserTool.inputSchema const parseResult = schema.safeParse({ url: 'https://example.com', action: 'click', }) expect(parseResult.success).toBe(false) }) test('invalid URL returns error', async () => { const { WebBrowserTool } = await import('../WebBrowserTool.js') const result = await WebBrowserTool.call({ url: 'not-a-url' } as any) expect(result.data.content).toContain('Failed to fetch') }) })