Stabilize tests to run locally and parallel across all TFMs #8
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Later versions of System.Text.Json and its transitive assemblies don't support .NET 6, forcing a suppression of a warning by Microsoft that the configuration is unsupported and used at our own risk.��To mitigate this, we can choose appropriate dependencies for each TFM to avoid taking on this risk.��Corrected Warnings:�System.Text.Json 9.0.8 doesn't support net6.0 and has not been tested with it. Consider upgrading your TargetFramework to net8.0 or later. You may also set <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings> in the project file to ignore this warning and attempt to run in this unsupported configuration at your own risk. System.Text.Encodings.Web 9.0.8 doesn't support net6.0 and has not been tested with it. Consider upgrading your TargetFramework to net8.0 or later. You may also set <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings> in the project file to ignore this warning and attempt to run in this unsupported configuration at your own risk. System.IO.Pipelines 9.0.8 doesn't support net6.0 and has not been tested with it. Consider upgrading your TargetFramework to net8.0 or later. You may also set <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings> in the project file to ignore this warning and attempt to run in this unsupported configuration at your own risk. Microsoft.Bcl.AsyncInterfaces 9.0.8 doesn't support net6.0 and has not been tested with it. Consider upgrading your TargetFramework to net8.0 or later. You may also set <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings> in the project file to ignore this warning and attempt to run in this unsupported configuration at your own risk.
… due to scientific notation and epsilon differences
This causes test failures when running multiple TFMs in parallel. We need to build a sync primitive around adding type handlers to avoid race conditions.
…TTP handling between frameworks��Try to match the .NET Core sockets parameters
In .NET Framework TFMs, when running thousands of tests in parallel over HTTP, we can exhaust ports due to too many created connections. So we have to pool a reasonable number of them to unblock execution.��The default pool implementation is still suspect, as it creates an HttpClient on every single request, obviating the benefit of a factory.
… TFM because the Tuple polyfill uses object arrays due to missing ITuple, which will not conform to the way these types are consumed in library code at runtime, causing multiple test failures, and likely issues for consumers using them.
…due to differences in CH vs. client wall time
…FMs, due to tight timeout windows, the internal WebException on request timeout might throw before TaskCanceledException does, causing a false failure.
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This pull request stabilizes multiple issues, particular in .NET 4.6.2 and .NET 4.8, that prevented running unit tests in parallel end-to-end.
This addresses #7 as well as test isolation issues preventing stable parallel test runs, and platform warnings for the use of unsupported/untested framework libraries from transitive assemblies.
It also addresses flaws in Tuple backwards compatibility in .NET 4.6.2, with some limitations.