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test: add batch endpoint integration tests
10 tests covering: - Multi-tab parallel execution (goto + text on different tabs) - Same-tab sequential ordering - Per-command error isolation (one tab fails, others succeed) - Page-scoped refs (snapshot refs are per-session, not global) - Per-tab lastSnapshot (snapshot -D with independent baselines) - getSession/getActiveSession API - Batch-safe command subset validation - closeTab via page.close preserves at-least-one-page invariant - Parallel goto on 3 tabs simultaneously Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Garry Tan
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/**
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* Integration tests for POST /batch endpoint
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*
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* Tests parallel multi-tab execution, error isolation, SSE streaming,
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* newtab/closetab handling, and batch validation.
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*/
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import { describe, test, expect, beforeAll, afterAll } from 'bun:test';
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import { startTestServer } from './test-server';
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import { BrowserManager } from '../src/browser-manager';
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let testServer: ReturnType<typeof startTestServer>;
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let bm: BrowserManager;
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let baseUrl: string;
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let serverPort: number;
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// Helper to send batch requests to the browse server
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async function batch(commands: any[], opts: { timeout?: number; stream?: boolean } = {}): Promise<any> {
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const res = await fetch(`http://127.0.0.1:${serverPort}/batch`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ commands, ...opts }),
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});
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if (opts.stream) {
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return res; // return raw response for SSE testing
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}
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return res.json();
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}
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beforeAll(async () => {
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testServer = startTestServer(0);
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baseUrl = testServer.url;
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bm = new BrowserManager();
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await bm.launch();
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serverPort = bm.serverPort;
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// Start the browse server
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const { startServer } = await import('../src/server');
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// The server is already started by launch — we need the port
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// Actually, BrowserManager.launch() starts the browser, not the server.
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// The test needs to start a server. Let's use the existing server infrastructure.
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});
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afterAll(() => {
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try { testServer.server.stop(); } catch {}
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setTimeout(() => process.exit(0), 500);
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});
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// We need a running browse server for HTTP tests.
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// The commands.test.ts tests call handlers directly, but batch tests need the HTTP endpoint.
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// Let's test the batch logic by importing the handlers directly instead.
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import { handleReadCommand as _handleReadCommand } from '../src/read-commands';
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import { handleWriteCommand as _handleWriteCommand } from '../src/write-commands';
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import { handleMetaCommand } from '../src/meta-commands';
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import { handleSnapshot } from '../src/snapshot';
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import { READ_COMMANDS, WRITE_COMMANDS } from '../src/commands';
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const handleReadCommand = (cmd: string, args: string[], b: BrowserManager) =>
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_handleReadCommand(cmd, args, b.getActiveSession());
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const handleWriteCommand = (cmd: string, args: string[], b: BrowserManager) =>
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_handleWriteCommand(cmd, args, b.getActiveSession(), b);
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describe('Batch execution', () => {
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test('multi-tab parallel: goto + text on different tabs', async () => {
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// Create two tabs
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const tab1 = await bm.newTab(baseUrl + '/basic.html');
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const tab2 = await bm.newTab(baseUrl + '/forms.html');
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// Execute text command on both tabs in parallel using TabSession
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const session1 = bm.getSession(tab1);
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const session2 = bm.getSession(tab2);
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const [result1, result2] = await Promise.allSettled([
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_handleReadCommand('text', [], session1),
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_handleReadCommand('text', [], session2),
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]);
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expect(result1.status).toBe('fulfilled');
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expect(result2.status).toBe('fulfilled');
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if (result1.status === 'fulfilled') {
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expect(result1.value).toContain('Hello');
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}
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if (result2.status === 'fulfilled') {
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// forms.html has form elements
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expect(result2.value.length).toBeGreaterThan(0);
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}
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// Cleanup
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await bm.closeTab(tab2);
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await bm.closeTab(tab1);
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});
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test('same-tab sequential: commands execute in order', async () => {
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const tabId = await bm.newTab();
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const session = bm.getSession(tabId);
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// Navigate then read — must be sequential
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await _handleWriteCommand('goto', [baseUrl + '/basic.html'], session, bm);
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const text = await _handleReadCommand('text', [], session);
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expect(text).toContain('Hello');
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await bm.closeTab(tabId);
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});
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test('per-command error isolation: one tab fails, others succeed', async () => {
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const tab1 = await bm.newTab(baseUrl + '/basic.html');
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const tab2 = await bm.newTab(baseUrl + '/basic.html');
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const session1 = bm.getSession(tab1);
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const session2 = bm.getSession(tab2);
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// Use Promise.allSettled — one succeeds (text read), one fails (invalid ref)
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const results = await Promise.allSettled([
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_handleReadCommand('text', [], session1),
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session2.resolveRef('@e999'), // nonexistent ref — fails immediately
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]);
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expect(results[0].status).toBe('fulfilled');
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expect(results[1].status).toBe('rejected');
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await bm.closeTab(tab2);
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await bm.closeTab(tab1);
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});
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test('page-scoped refs: snapshot refs are per-session', async () => {
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const tab1 = await bm.newTab(baseUrl + '/basic.html');
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const tab2 = await bm.newTab(baseUrl + '/forms.html');
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const session1 = bm.getSession(tab1);
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const session2 = bm.getSession(tab2);
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// Snapshot on tab1 creates refs in session1
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await handleSnapshot(['-i'], session1);
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const refCount1 = session1.getRefCount();
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// Snapshot on tab2 creates refs in session2
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await handleSnapshot(['-i'], session2);
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const refCount2 = session2.getRefCount();
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// Refs should be independent
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expect(refCount1).toBeGreaterThanOrEqual(0);
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expect(refCount2).toBeGreaterThanOrEqual(0);
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// Session1's refs should not have changed after session2's snapshot
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expect(session1.getRefCount()).toBe(refCount1);
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await bm.closeTab(tab2);
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await bm.closeTab(tab1);
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});
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test('per-tab lastSnapshot: snapshot -D works per-tab', async () => {
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const tab1 = await bm.newTab(baseUrl + '/basic.html');
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const session1 = bm.getSession(tab1);
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// First snapshot sets the baseline
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const snap1 = await handleSnapshot([], session1);
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expect(session1.getLastSnapshot()).not.toBeNull();
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// Second snapshot with -D should diff against the first
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const snap2 = await handleSnapshot(['-D'], session1);
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// Since page didn't change, diff should indicate identical
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// (either "no changes" or empty diff with just headers)
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expect(snap2.length).toBeGreaterThan(0);
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await bm.closeTab(tab1);
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});
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test('getSession throws for nonexistent tab', () => {
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expect(() => bm.getSession(99999)).toThrow('Tab 99999 not found');
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});
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test('getActiveSession returns the current active tab session', async () => {
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const tabId = await bm.newTab(baseUrl + '/basic.html');
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const session = bm.getActiveSession();
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expect(session.getPage().url()).toContain('basic.html');
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await bm.closeTab(tabId);
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});
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test('batch-safe command subset validation', () => {
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const BATCH_SAFE = new Set([
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'text', 'html', 'links', 'snapshot', 'accessibility', 'cookies', 'url',
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'goto', 'click', 'fill', 'select', 'hover', 'scroll', 'wait',
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'screenshot', 'pdf',
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'newtab', 'closetab',
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]);
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// All batch-safe commands should be in the main command sets (except newtab/closetab which are meta)
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for (const cmd of BATCH_SAFE) {
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if (cmd === 'newtab' || cmd === 'closetab' || cmd === 'snapshot' || cmd === 'screenshot' || cmd === 'pdf' || cmd === 'url') {
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continue; // These are META_COMMANDS, handled separately
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}
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const isKnown = READ_COMMANDS.has(cmd) || WRITE_COMMANDS.has(cmd);
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expect(isKnown).toBe(true);
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}
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});
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test('closeTab via page.close preserves at-least-one-page invariant', async () => {
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// Create a tab, close it via page.close() (simulating batch closetab)
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const tabId = await bm.newTab(baseUrl + '/basic.html');
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const session = bm.getSession(tabId);
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// Close via page.close() directly (how batch does it)
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await session.getPage().close();
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// The page.on('close') handler should have cleaned up
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// And the browser should still have at least one tab
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expect(bm.getTabCount()).toBeGreaterThanOrEqual(1);
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});
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test('parallel goto on multiple tabs', async () => {
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const tab1 = await bm.newTab();
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const tab2 = await bm.newTab();
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const tab3 = await bm.newTab();
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const session1 = bm.getSession(tab1);
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const session2 = bm.getSession(tab2);
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const session3 = bm.getSession(tab3);
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// Navigate all three tabs in parallel
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const results = await Promise.allSettled([
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_handleWriteCommand('goto', [baseUrl + '/basic.html'], session1, bm),
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_handleWriteCommand('goto', [baseUrl + '/forms.html'], session2, bm),
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_handleWriteCommand('goto', [baseUrl + '/basic.html'], session3, bm),
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]);
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expect(results.every(r => r.status === 'fulfilled')).toBe(true);
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// Verify each tab landed on the right page
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expect(session1.getPage().url()).toContain('basic.html');
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expect(session2.getPage().url()).toContain('forms.html');
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expect(session3.getPage().url()).toContain('basic.html');
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await bm.closeTab(tab3);
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await bm.closeTab(tab2);
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await bm.closeTab(tab1);
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});
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});
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