| 14 | * of retries before it finally fails. |
| 15 | */ |
| 16 | export async function waitForNgServe(browser: Browser, hostUrl: string, timeoutAttempts: number) { |
| 17 | if (timeoutAttempts === 0) { |
| 18 | await browser.close(); |
| 19 | throw new Error('Unable to connect to Playground.'); |
| 20 | } |
| 21 | |
| 22 | const page = await browser.newPage(); |
| 23 | let ngServeErrors = 0; |
| 24 | |
| 25 | try { |
| 26 | page.on('console', (msg: ConsoleMessage) => { |
| 27 | if (msg.type() === 'error') { |
| 28 | ngServeErrors++; |
| 29 | } |
| 30 | }); |
| 31 | await page.goto(hostUrl); |
| 32 | setTimeout(() => page.close()); // close page to prevent memory leak |
| 33 | } catch (e) { |
| 34 | await page.close(); |
| 35 | await delay(1000); |
| 36 | await waitForNgServe(browser, hostUrl, timeoutAttempts - 1); |
| 37 | } |
| 38 | |
| 39 | if (ngServeErrors > 0) { |
| 40 | throw new Error('ng serve failure'); |
| 41 | } |
| 42 | } |