unitttest discovery and run does not work anymore after last update

[mehmetilker]

unittest discovery and run was working until I have updated to last version.
I have updated VS Code and Python extension to last version in the same time. I am not which one caused the problem.

Environment data

• VS Code version: 1.21.1
  Version 1.21.1
  Commit 79b44aa704ce542d8ca4a3cc44cfca566e7720f1
  Date 2018-03-14T14:46:47.128Z
  Shell 1.7.9
  Renderer 58.0.3029.110
  Node 7.9.0
  Architecture x64
• Extension version (available under the Extensions sidebar): 2018.2.1
• OS and version: Win 10.0.16299 Build 16299
• Python version (& distribution if applicable, e.g. Anaconda): 3.6.4 / pip 9.0.1
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): venv
• Relevant/affected Python packages and their versions:unittest

Actual behavior

Discover Tests result with "No tests discovered, please check the configuration settings for the tests."

Expected behavior

Display available tests.

Steps to reproduce:

1. Create folder and put a unit test file according to documentation
   https://docs.python.org/3/library/unittest.html
2. Create virtual environment with : py -m venv [envname]
3. Activate venv
4. Click Run Tests and configure for first execution with following settings in .vscode/settings.json
   {
   "python.pythonPath": "${workspaceFolder}\_env\Scripts\python.exe",
   "python.unitTest.unittestArgs": [
   "-v",
   "-s",
   "./_env",
   "-p",
   "*test.py"
   ],
   "python.unitTest.unittestEnabled": true
   }
5. Click Discover tests.
6. Alert will be shown with a message "No tests discovered, please check the configuration settings for the tests." & Disable Tests.

Logs

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

No output

Output from Console under the Developer Tools panel (toggle Developer Tools on under Help)

No output

[DonJayamanne]

Where are your tests files located? Are they inside the virtual environment?

[mehmetilker]

Folder structure is as follows. So not inside but next to it.

/projectfolder
----/_env
----/xtest.py

[DonJayamanne]

Then please change the settings in settings.json from ./_env", to ..
The way you have configured it, you're telling unit tests to look for tests in the ./_env directory.
Please check the documentation here: https://docs.python.org/3/library/unittest.html#cmdoption-unittest-discover-s

[mehmetilker]

Sorry to take your time. My mistake.
I created new project folder to reproduce the problem but I created config file wrong.

Original problem was that there was undefined variable problem in unit test file and instead of displaying that error in console, extension display alert saying that "No tests discovered, please check the configuration settings for the tests."

Thanks.