improve accuracy of Expect100Continue_WaitsExpectedPeriodOfTimeBeforeSendingContent test #44053
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…SendingContent test
wfurt
added
area-System.Net.Http
test-bug
|
Tagging subscribers to this area: @dotnet/ncl |
ManickaP
approved these changes
Oct 30, 2020
src/libraries/System.Net.Http/tests/FunctionalTests/HttpClientHandlerTest.Cancellation.cs
Outdated
Show resolved
Hide resolved
src/libraries/System.Net.Http/tests/FunctionalTests/HttpClientHandlerTest.Cancellation.cs
Show resolved
Hide resolved
|
/azp run runtime-libraries-coreclr outerloop |
|
Azure Pipelines successfully started running 1 pipeline(s). |
|
all failures seems unrelated. running outer loop one more time to be sure. |
|
/azp run runtime-libraries-coreclr outerloop |
|
Azure Pipelines successfully started running 1 pipeline(s). |
geoffkizer
reviewed
Nov 3, 2020
|
|
||
| Assert.InRange(sw.Elapsed, delay - TimeSpan.FromSeconds(.5), delay * 20); // arbitrary wiggle room | ||
| long elapsed = content.Ticks - start; | ||
| Assert.True(elapsed >= delay.TotalMilliseconds); |
There was a problem hiding this comment.
You might want to have a small amount of leeway here in checking that elapsed >= delay, just in case of timing weirdness -- looks like the test previously had 0.5s of leeway?
If it's reliable as is, then maybe no leeway is necessary.
geoffkizer
approved these changes
Nov 3, 2020
ghost
locked as resolved and limited conversation to collaborators
Sign up for free
to subscribe to this conversation on GitHub.
Already have an account?
Sign in.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
From the name of the test, I assume we are trying to verify that provided
Expect100ContinueTimeoutis respected e.g. we wait longer than default 1s.Right now the test does it be measuring whole request/response and verifying duration within arbitrary time range.
With delay of 3s and fudge of 20 we expect everything to finish within 1 minute. From test failures are are sometimes over that - with max duration ~ 1:30 -1:40.
This PR is changing the test logic. Instead of measuring the whole duration, I measure delay between start and sending content e.g. call to SerializeToStreamAsync(). It should be at least expected delay - and could be more depending on system load and other environmental conditions. With default 1s, that should be sufficient verification that the delay actually works.
I originally used Stopwatch and I saw occasion failures when elapsed time would be slightly shorter e.g. 2995-2999.
I solved by using Environment.TickCount64 instead as it seems to use semi coarse base as Timer class.
fixes #41530
fixes #41953