This tool enables diagnostic log collection for various unit test framework components.

It will collect following logs:

DiagnosticsLog.txt (The log for this tool) WCFEtwTrace.etl (WCF log) vstest.executionengine.TpTrace.log vstest.executionengine.x86.TpTrace.log vstest.discoveryengine.TpTrace.log vstest.discoveryengine.x86.TpTrace.log devenv.TpTrace

vstest.diag (/EnableLogs|/DisableLogs)

/EnableLogs Enables various diagnostic logs for unit test framework.

Post this you can execute the test platform scenarios, the details will be captured by the logs.
Run this tool again with /DisableLogs to stop collecting the verbose logs.
Leaving logs enabled will cause slow performance.

/DisableLogs Disables the logs if enabled earlier. /Help Show help

Below is a typical usage of this tool. All commands are run from Administrator command prompt.

$ vstest.diag.exe /enablelogs
$ vstest.console.exe mytests.dll # run your unit tests that reproduce a bug in the product
$ vstest.diag.exe /disablelogs
$ # copy logs from %temp%

Apache License v2.0.

Clone the project, run nuget restore, patch and send a pull request!

We (VS Unit Testing team at Microsoft) developed this tool as a side project. It collates the numerous diagnostics switches for test platform from various MSDN blog posts into a single tool.

Hope it helps! <3