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test: unflake some web socket tests (#4673)

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Tests were waiting for `framesent` event after awaiting `page.evaluate`.
Sometimes, `page.evaluate` took long enough and finished after
the `framesent`.

Drive-by: small fixes for mode=service test fixture.
This commit is contained in:
Dmitry Gozman 2020-12-10 15:01:30 -08:00 committed by GitHub
parent 12dc04a304
commit e97ab7e42f
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 22 additions and 13 deletions
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5
test/fixtures.ts
View File

@ -131,6 +131,7 @@ fixtures.playwright.override(async ({ browserName, testWorkerIndex, platform, mo
const spawnedProcess = childProcess.fork(path.join(__dirname, '..', 'lib', 'service.js'), [String(port)], {
stdio: 'pipe'
});
spawnedProcess.stderr.pipe(process.stderr);
await new Promise(f => {
spawnedProcess.stdout.on('data', data => {
if (data.toString().includes('Listening on'))
@ -144,9 +145,11 @@ fixtures.playwright.override(async ({ browserName, testWorkerIndex, platform, mo
spawnedProcess.on('exit', onExit);
const client = await PlaywrightClient.connect(`ws://localhost:${port}/ws`);
await run(client.playwright());
spawnedProcess.removeListener('exit', onExit);
await client.close();
spawnedProcess.removeListener('exit', onExit);
const processExited = new Promise(f => spawnedProcess.on('exit', f));
spawnedProcess.kill();
await processExited;
await teardownCoverage();
} else {
const playwright = require('../index');

30
test/web-socket.spec.ts
View File

@ -108,41 +108,47 @@ it('should emit error', async ({page, server, isFirefox}) => {
expect(message).toContain(': 400');
});
it('should not have stray error events', async ({page, server, isFirefox}) => {
const [ws] = await Promise.all([
page.waitForEvent('websocket'),
it('should not have stray error events', async ({page, server}) => {
let error;
page.on('websocket', ws => ws.on('socketerror', e => error = e));
await Promise.all([
page.waitForEvent('websocket').then(async ws => {
await ws.waitForEvent('framereceived');
return ws;
}),
page.evaluate(port => {
(window as any).ws = new WebSocket('ws://localhost:' + port + '/ws');
}, server.PORT)
]);
let error;
ws.on('socketerror', e => error = e);
await ws.waitForEvent('framereceived');
await page.evaluate('window.ws.close()');
expect(error).toBeFalsy();
});
it('should reject waitForEvent on socket close', async ({page, server, isFirefox}) => {
it('should reject waitForEvent on socket close', async ({page, server}) => {
const [ws] = await Promise.all([
page.waitForEvent('websocket'),
page.waitForEvent('websocket').then(async ws => {
await ws.waitForEvent('framereceived');
return ws;
}),
page.evaluate(port => {
(window as any).ws = new WebSocket('ws://localhost:' + port + '/ws');
}, server.PORT)
]);
await ws.waitForEvent('framereceived');
const error = ws.waitForEvent('framesent').catch(e => e);
await page.evaluate('window.ws.close()');
expect((await error).message).toContain('Socket closed');
});
it('should reject waitForEvent on page close', async ({page, server, isFirefox}) => {
it('should reject waitForEvent on page close', async ({page, server}) => {
const [ws] = await Promise.all([
page.waitForEvent('websocket'),
page.waitForEvent('websocket').then(async ws => {
await ws.waitForEvent('framereceived');
return ws;
}),
page.evaluate(port => {
(window as any).ws = new WebSocket('ws://localhost:' + port + '/ws');
}, server.PORT)
]);
await ws.waitForEvent('framereceived');
const error = ws.waitForEvent('framesent').catch(e => e);
await page.close();
expect((await error).message).toContain('Page closed');