tests: Clean up the existing tests.py

This cleans up the code of `tests.py` and makes it use the new functions
from `utils.py`. This also makes the test sleep much less, which is only
still required before destroying the pool due to
#282

Signed-off-by: Axel Gembe <axel@gembe.net>

Author: EchterAgo

.github/workflows/windows-build-test.yml

@@ -2141,7 +2141,7 @@ jobs:
 
 
     - name: test
-      run: 'python.exe -u "${{github.workspace}}\contrib\windows\tests\tests.py" -path ${{github.workspace}}\'
+      run: 'python.exe -u "${{github.workspace}}\contrib\windows\tests\tests.py" --path ${{github.workspace}}\'