This repository contains a minimal NUnit test project with a single test that Visual Studio 16.2.0's Test Explorer won't be able to execute.
Trying to run the test will result in the following error (visible in the Output window when Show output from is set to Tests):
[26 Jul 2019 2:03:16.285 PM Informational] ---------- Discovery started ---------- [26 Jul 2019 2:03:16.300 PM Informational] ========== Discovery skipped: All test containers are up to date ========== [26 Jul 2019 2:03:16.306 PM Informational] ---------- Run started ---------- [26 Jul 2019 2:03:17.418 PM Informational] NUnit Adapter 3.13.0.0: Test execution started [26 Jul 2019 2:03:17.427 PM Error] An exception occurred while invoking executor 'executor://nunit3testexecutor/': Incorrect format for TestCaseFilter Error: Invalid Condition 'FullyQualifiedName=Tests.Test => True'. Specify the correct format and try again. Note that the incorrect format can lead to no test getting executed. [26 Jul 2019 2:03:17.498 PM Informational] ========== Run finished: 0 tests run (0:00:01,1892526) ==========
The problem appears to be caused by the way how the arguments produced by the test case source (LINQ expression trees in this case here) are formatted as strings: see here.
Works fine:
vstest.console .\TestCaseFilterInvalidFormatBugRepro.dllMicrosoft (R) Test Execution Command Line Tool Version 16.2.0 Copyright (c) Microsoft Corporation. All rights reserved. Starting test execution, please wait... NUnit Adapter 3.13.0.0: Test execution started Running all tests in ...\TestCaseFilterInvalidFormatBugRepro\bin\Debug\netcoreapp2.2\.\TestCaseFilterInvalidFormatBugRepro.dll NUnit3TestExecutor converted 1 of 1 NUnit test cases NUnit Adapter 3.13.0.0: Test execution complete √ Test(() => True) [6ms]
Test Run Successful. Total tests: 1 Passed: 1 Total time: 1,0082 Seconds