fixing two tests

[djarecka]

some tests were failing after merging #504

Acknowledgment

• I acknowledge that this contribution will be available under the Apache 2 license.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Summary

Checklist

• All tests passing
• I have added tests to cover my changes
• I have updated documentation (if necessary)
• My code follows the code style of this project
  (we are using black: you can pip install pre-commit,
  run pre-commit install in the pydra directory
  and black will be run automatically with each commit)

[codecov]

Codecov Report

Merging #514 (9cbb2dd) into master (1f96fcf) will increase coverage by 39.25%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #514       +/-   ##
===========================================
+ Coverage   39.64%   78.89%   +39.25%     
===========================================
  Files          20       20               
  Lines        4326     4326               
  Branches     1211     1211               
===========================================
+ Hits         1715     3413     +1698     
+ Misses       2285      721     -1564     
+ Partials      326      192      -134     

Flag	Coverage Δ
unittests	78.82% <ø> (+39.18%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pydra/engine/workers.py	18.62% <0.00%> (+1.49%)	⬆️
pydra/conftest.py	55.55% <0.00%> (+16.66%)	⬆️
pydra/__init__.py	95.00% <0.00%> (+20.00%)	⬆️
pydra/engine/submitter.py	84.66% <0.00%> (+20.66%)	⬆️
pydra/engine/core.py	89.25% <0.00%> (+30.33%)	⬆️
pydra/engine/specs.py	88.13% <0.00%> (+35.59%)	⬆️
pydra/engine/helpers_file.py	80.48% <0.00%> (+35.97%)	⬆️
pydra/engine/helpers.py	79.57% <0.00%> (+39.42%)	⬆️
pydra/engine/task.py	87.85% <0.00%> (+41.52%)	⬆️
pydra/utils/profiler.py	43.51% <0.00%> (+43.51%)	⬆️
... and 8 more

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