re-enable tests

Author: skvark

appveyor.yml

@@ -141,6 +141,13 @@ before_test:
 
     if %ENABLE_CONTRIB% EQU 0 ("%PYTHON%/python.exe" -m pip install --no-index --find-links=%APPVEYOR_BUILD_FOLDER%\dist\ opencv-python) else ("%PYTHON%/python.exe" -m pip install --no-index --find-links=%APPVEYOR_BUILD_FOLDER%\dist\ opencv-contrib-python)
 
+test_script:
+- cmd: >-
+
+    cd %APPVEYOR_BUILD_FOLDER%\tests
+
+    "%PYTHON%/python.exe" -m unittest test
+
 artifacts:
 - path: dist\*.whl
   name: wheels