/
web-test-runner.config.mjs
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web-test-runner.config.mjs
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import { fromRollup } from "@web/dev-server-rollup";
import { esbuildPlugin } from "@web/dev-server-esbuild";
import _postcss from "rollup-plugin-postcss";
import _replace from "@rollup/plugin-replace";
import _commonjs from "@rollup/plugin-commonjs";
import { playwrightLauncher } from "@web/test-runner-playwright";
import { visualRegressionPlugin } from "@web/test-runner-visual-regression/plugin";
const ignoredBrowserLogs = [
"Lit is in dev mode. Not recommended for production! See https://lit.dev/msg/dev-mode for more information.",
];
// disable CSS animation snippet
// taken from https://github.com/microsoft/playwright/issues/7548#issuecomment-881897256
const testRunnerHtml = (testFramework) =>
`<!DOCTYPE html><html>
<body>
<style>
*,
*::before,
*::after {
-moz-animation: none !important;
-moz-transition: none !important;
animation: none !important;
caret-color: transparent !important;
transition: none !important;
}
</style>
<script type="module" src="${testFramework}"></script>
</body>
</html>`;
const postcss = fromRollup(_postcss);
const replace = fromRollup(_replace);
const commonjs = fromRollup(_commonjs);
export default {
concurrentBrowsers: 3,
browsers: [
playwrightLauncher({
product: "chromium",
createBrowserContext({ browser }) {
return browser.newContext({ reducedMotion: "reduce" });
},
}),
playwrightLauncher({
product: "firefox",
createBrowserContext({ browser }) {
return browser.newContext({ reducedMotion: "reduce" });
},
launchOptions: {
firefoxUserPrefs: {
// force pointer capabilities activation on Firefox Headless on GTK (Gnome Toolkit - CI)
// see https://github.com/microsoft/playwright/issues/7769#issuecomment-966098074
"ui.primaryPointerCapabilities": 0x02 | 0x04,
"ui.allPointerCapabilities": 0x02 | 0x04,
},
},
}),
playwrightLauncher({
product: "webkit",
createBrowserContext({ browser }) {
return browser.newContext({ reducedMotion: "reduce" });
},
}),
],
testFramework: {
config: {
timeout: "10000",
},
},
nodeResolve: { browser: true },
mimeTypes: {
"**/*.less": "js",
},
plugins: [
postcss(),
replace({
"process.env.NODE_ENV": JSON.stringify("production"),
"preventAssignment": true,
}),
commonjs(),
esbuildPlugin({ ts: true }),
visualRegressionPlugin({
// https://github.com/StackExchange/Stacks?tab=readme-ov-file#visual-regression-tests
getFailedName: ({ browser, name }) => {
return `${browser}/baseline/${name}.png`;
},
}),
],
filterBrowserLogs: ({ args }) =>
!args.some((arg) => ignoredBrowserLogs.includes(arg)),
groups: [
{
name: "a11y",
files: "lib/**/*.a11y.test.ts",
browsers: [playwrightLauncher({ product: "chromium" })],
testRunnerHtml
},
{
name: "unit",
files: "lib/**/!(*.visual|*.a11y|*.less).test.ts",
},
{
name: "visual",
files: "lib/**/*.visual.test.ts",
testRunnerHtml
},
],
testsFinishTimeout: 60 * 1000 * 5, // 5 minutes
};