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import { defineConfig, devices } from "@playwright/test";

export default defineConfig({

testDir: "./tests/e2e",

// Exclude the screenshot generation spec from default runs.

// It writes examples/*/grid-cell.png as a side effect and is meant to be

// invoked only via `npm run generate:screenshots` (which sets

// GENERATE_SCREENSHOTS=1 to bypass this ignore).

testIgnore: process.env.GENERATE_SCREENSHOTS

? []

: ["**/generate-grid-screenshots.spec.ts"],

fullyParallel: true,

forbidOnly: !!process.env.CI,

retries: process.env.CI ? 2 : 0,

workers: process.env.CI ? 2 : 16, // Parallel execution now works with factory pattern

timeout: 30000, // 30s per test

reporter: process.env.CI ? "list" : "html",

// Use platform-agnostic snapshot names (no -darwin/-linux suffix)

snapshotPathTemplate:

"{testDir}/{testFileDir}/{testFileName}-snapshots/{arg}{ext}",

use: {

baseURL: "http://localhost:8080",

trace: "on-first-retry",

screenshot: "only-on-failure",

},

projects: [

{

name: "chromium",

use: {

...devices["Desktop Chrome"],

// Use default Chromium everywhere for consistent screenshot rendering

// Run `npm run test:e2e:docker` locally for CI-identical results

...(process.env.PW_CHANNEL ? { channel: process.env.PW_CHANNEL } : {}),

},

},

],

// Run examples server before tests

// Supports EXAMPLE=<folder> env var to run a single example (e.g., EXAMPLE=say-server npm run test:e2e)

webServer: {

command: "npm run examples:start",

url: "http://localhost:8080",

// Always start fresh servers to avoid stale state issues

reuseExistingServer: false,

// 3 minutes to allow uv to download Python dependencies on first run

timeout: 180000,

// Pass through EXAMPLE env var to filter to a single server

env: {

...process.env,

EXAMPLE: process.env.EXAMPLE ?? "",

// Let pdf-server fetch from the http://127.0.0.1 range-counting fixture

// (validateUrl rejects loopback HTTP unless this is set). Scoped to this

// server's check only — does not touch Node's TLS verification.

PDF_SERVER_ALLOW_LOOPBACK_HTTP: "1",

},

},

// Snapshot configuration

expect: {

toHaveScreenshot: {

maxDiffPixelRatio: 0.06,

animations: "disabled",

},

},

});