Code coverage with dotcover and .NET core doesnt work
I've a teamcity configuration with one build step using .NET CLI 0.9.7 .
In this step I've configured a test command on a NUnit project and enabled coverage with dotcover 2018.1.4 .
At the same conditions (including same code) coverage some times doesnt work and It results in
DotCover statement coverage was: 0 of 0 ( -1.0%)
In those rare cases where the coverage doesnt work the only difference is .dcvr file that seems to be truncated (small size).
Is this a known issue?
I'm using:
Teamcity version 2017.1.3
.NET Core 2.1
.NET CLI plugin 0.9.7
Nunit 3.10.1
Nunit console runner 3.8.0
Dotcover 2018.1.4 (same problem using 2018.1.3 and 2018.1.2)
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There is a related issue https://youtrack.jetbrains.com/issue/TW-55606
Briefly, it happens because of vstest host might be killed by the vstest test engine before dotCover has a chance to save coverage snapshot completely.
There is a workaround: https://dotnettools-support.jetbrains.com/hc/en-us/articles/360001627210-Inconsistent-coverage-results-using-dotCover-console-runner-with-NET-Core-unit-tests-, but it is too complex from my point of view. So I've created the PR: https://github.com/Microsoft/vstest/pull/1741 which allows to avoid this issue, but it is still not accepted by the vstest team unfortunately.
The PR is closed now, do you have any alternativo or insist in ahoter PR to fix this?