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test: use consistent timeouts #42893
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ShogunPanda
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131 changes: 131 additions & 0 deletions
131
test/parallel/test-http-server-request-timeouts-mixed.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| 'use strict'; | ||
|
|
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| const common = require('../common'); | ||
| const assert = require('assert'); | ||
| const { createServer } = require('http'); | ||
| const { connect } = require('net'); | ||
|
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| // This test validates that request are correct checked for both requests and headers timeout in various situations. | ||
|
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| const requestBodyPart1 = 'POST / HTTP/1.1\r\nContent-Length: 20\r\n'; | ||
| const requestBodyPart2 = 'Connection: close\r\n\r\n1234567890'; | ||
| const requestBodyPart3 = '1234567890'; | ||
|
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| const responseOk = 'HTTP/1.1 200 OK\r\n'; | ||
| const responseTimeout = 'HTTP/1.1 408 Request Timeout\r\n'; | ||
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| const headersTimeout = common.platformTimeout(2000); | ||
| const connectionsCheckingInterval = headersTimeout / 4; | ||
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| const server = createServer({ | ||
| headersTimeout, | ||
| requestTimeout: headersTimeout * 2, | ||
| keepAliveTimeout: 0, | ||
| connectionsCheckingInterval | ||
| }, common.mustCall((req, res) => { | ||
| req.resume(); | ||
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| req.on('end', () => { | ||
| res.writeHead(200, { 'Content-Type': 'text/plain' }); | ||
| res.end(); | ||
| }); | ||
| }, 4)); | ||
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| assert.strictEqual(server.headersTimeout, headersTimeout); | ||
| assert.strictEqual(server.requestTimeout, headersTimeout * 2); | ||
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| let i = 0; | ||
| function createClient(server) { | ||
| const request = { | ||
| index: i++, | ||
| client: connect(server.address().port), | ||
| response: '', | ||
| completed: false | ||
| }; | ||
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| request.client.on('data', common.mustCallAtLeast((chunk) => { | ||
| request.response += chunk.toString('utf-8'); | ||
| })); | ||
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| request.client.on('end', common.mustCall(() => { | ||
| request.completed = true; | ||
| })); | ||
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| request.client.on('error', common.mustNotCall()); | ||
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| request.client.resume(); | ||
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| return request; | ||
| } | ||
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| server.listen(0, common.mustCall(() => { | ||
| const request1 = createClient(server); | ||
| let request2; | ||
| let request3; | ||
| let request4; | ||
| let request5; | ||
|
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| // Send the first request and stop before the body | ||
| request1.client.write(requestBodyPart1); | ||
|
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| // After a little while send two new requests | ||
| setTimeout(() => { | ||
| request2 = createClient(server); | ||
| request3 = createClient(server); | ||
|
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| // Send the second request, stop in the middle of the headers | ||
| request2.client.write(requestBodyPart1); | ||
| // Send the second request, stop in the middle of the headers | ||
| request3.client.write(requestBodyPart1); | ||
| }, headersTimeout * 0.2); | ||
|
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| // After another little while send the last two new requests | ||
| setTimeout(() => { | ||
| request4 = createClient(server); | ||
| request5 = createClient(server); | ||
|
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| // Send the fourth request, stop in the middle of the headers | ||
| request4.client.write(requestBodyPart1); | ||
| // Send the fifth request, stop in the middle of the headers | ||
| request5.client.write(requestBodyPart1); | ||
| }, headersTimeout * 0.6); | ||
|
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| setTimeout(() => { | ||
| // Finish the first request | ||
| request1.client.write(requestBodyPart2 + requestBodyPart3); | ||
|
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| // Complete headers for all requests but second | ||
| request3.client.write(requestBodyPart2); | ||
| request4.client.write(requestBodyPart2); | ||
| request5.client.write(requestBodyPart2); | ||
| }, headersTimeout * 0.8); | ||
|
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| setTimeout(() => { | ||
| // After the first timeout, the first request should have been completed and second timedout | ||
| assert(request1.completed); | ||
| assert(request2.completed); | ||
| assert(!request3.completed); | ||
| assert(!request4.completed); | ||
| assert(!request5.completed); | ||
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| assert(request1.response.startsWith(responseOk)); | ||
| assert(request2.response.startsWith(responseTimeout)); // It is expired due to headersTimeout | ||
| }, headersTimeout * 1.2 + connectionsCheckingInterval); | ||
|
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| setTimeout(() => { | ||
| // Complete the body for the fourth request | ||
| request4.client.write(requestBodyPart3); | ||
| }, headersTimeout * 1.5); | ||
|
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| setTimeout(() => { | ||
| // All request should be completed now, either with 200 or 408 | ||
| assert(request3.completed); | ||
| assert(request4.completed); | ||
| assert(request5.completed); | ||
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| assert(request3.response.startsWith(responseTimeout)); // It is expired due to requestTimeout | ||
| assert(request4.response.startsWith(responseOk)); | ||
| assert(request5.response.startsWith(responseTimeout)); // It is expired due to requestTimeout | ||
| server.close(); | ||
| }, headersTimeout * 3 + connectionsCheckingInterval); | ||
| })); | ||
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Relying on timers is the most frequent source of flakiness in tests. Apart from doing it concurrently with multiple requests, does this test tests something not already tested in existing tests?
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I know, timers are messy. But unfortunately this test is about testing timers. :(
Yes, it checks that the concurrent checking of
requestTimeoutandheadersTimeoutworks properly.There was a problem hiding this comment.
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My point is, are
requestTimeoutandheadersTimeoutalready tested with a single request? If so what makes this test special? Why wouldn't the options work with multiple concurrent request if they work with a single one?There was a problem hiding this comment.
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Well, they should, but I thought adding a more complex "real world like" scenario would have helped for future regression testing.