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forked from baron/baron-sso
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baron-sso/userfront-e2e/tests/login-performance-budget.spec.ts

117 lines
3.5 KiB
TypeScript

import { expect, test, type Page, type Request } from '@playwright/test';
type LoadMetrics = {
durationMs: number;
transferredBytes: number;
requestedUrls: string[];
cacheControlByPath: Map<string, string>;
contentEncodingByPath: Map<string, string>;
};
async function mockPublicApis(page: Page): Promise<void> {
await page.route('**/api/v1/**', async (route) => {
const requestUrl = new URL(route.request().url());
if (requestUrl.pathname.endsWith('/api/v1/user/me')) {
await route.fulfill({
status: 401,
contentType: 'application/json',
body: JSON.stringify({ error: 'unauthorized' }),
});
return;
}
await route.fulfill({
status: 200,
contentType: 'application/json',
body: JSON.stringify({}),
});
});
}
async function measureSigninLoad(page: Page): Promise<LoadMetrics> {
const requestedUrls: string[] = [];
const cacheControlByPath = new Map<string, string>();
const contentEncodingByPath = new Map<string, string>();
let transferredBytes = 0;
page.on('request', (request: Request) => {
requestedUrls.push(request.url());
});
page.on('response', async (response) => {
const url = new URL(response.url());
const cacheControl = response.headers()['cache-control'];
if (cacheControl) {
cacheControlByPath.set(url.pathname, cacheControl);
}
const contentEncoding = response.headers()['content-encoding'];
if (contentEncoding) {
contentEncodingByPath.set(url.pathname, contentEncoding);
}
const timing = response.request().timing();
if (timing.responseEnd >= 0) {
const sizes = await response.request().sizes().catch(() => null);
transferredBytes += sizes?.responseBodySize ?? 0;
}
});
const start = performance.now();
await page.goto('/ko/signin', { waitUntil: 'networkidle' });
await expect(page).toHaveURL(/\/ko\/signin(?:\?.*)?$/);
const durationMs = Math.round(performance.now() - start);
return {
durationMs,
transferredBytes,
requestedUrls,
cacheControlByPath,
contentEncodingByPath,
};
}
test.describe('UserFront login performance budget', () => {
test('warm login page load stays within the two second budget and reuses cached assets', async ({
page,
}) => {
await mockPublicApis(page);
const cold = await measureSigninLoad(page);
const warm = await measureSigninLoad(page);
console.log(
`[userfront-perf] cold=${cold.durationMs}ms/${cold.transferredBytes}B warm=${warm.durationMs}ms/${warm.transferredBytes}B`,
);
expect(warm.durationMs).toBeLessThanOrEqual(2000);
expect(warm.transferredBytes).toBeLessThanOrEqual(1_000_000);
expect(warm.requestedUrls.some((url) => url.includes('NotoSansKR'))).toBe(
false,
);
expect(
warm.requestedUrls.some((url) =>
url.includes('fonts.googleapis.com/icon?family=Material+Icons'),
),
).toBe(false);
const cacheControlByPath = new Map([
...cold.cacheControlByPath,
...warm.cacheControlByPath,
]);
const contentEncodingByPath = new Map([
...cold.contentEncodingByPath,
...warm.contentEncodingByPath,
]);
const appShellCache = cacheControlByPath.get('/ko/signin') ?? '';
expect(appShellCache).toContain('no-cache');
expect(cold.durationMs).toBeGreaterThanOrEqual(0);
const brotliEntrypoint = [...contentEncodingByPath.entries()].some(
([path, encoding]) =>
/^\/main\.dart\.[0-9a-f]{12}\.(?:mjs|wasm|js)$/.test(path) &&
encoding === 'br',
);
expect(brotliEntrypoint).toBe(true);
});
});