Creates path to json file if it does not exist

[shawnemhe]

Minor change to prevent raising an error when attempting to create a cucumber json in a directory that has not been created yet. This breaks form with the standard pytest --junitxml functionality which would create the path in this situation.

[codecov-io]

Codecov Report

Merging #347 into master will increase coverage by 0.83%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #347      +/-   ##
==========================================
+ Coverage   94.99%   95.82%   +0.83%     
==========================================
  Files          57       57              
  Lines        2217     2227      +10     
  Branches      185      188       +3     
==========================================
+ Hits         2106     2134      +28     
+ Misses         73       62      -11     
+ Partials       38       31       -7

Impacted Files	Coverage Δ
tests/feature/test_cucumber_json.py	97.56% <100%> (+0.59%)	:arrow_up:
pytest_bdd/cucumber_json.py	92.77% <100%> (+2.64%)	:arrow_up:
pytest_bdd/feature.py	99.24% <0%> (+3%)	:arrow_up:
pytest_bdd/parsers.py	87.75% <0%> (+4.08%)	:arrow_up:
pytest_bdd/scripts.py	91.48% <0%> (+4.25%)	:arrow_up:
tests/steps/test_unicode.py	100% <0%> (+6.45%)	:arrow_up:
pytest_bdd/utils.py	100% <0%> (+22.22%)	:arrow_up:

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[youtux]

Hi @shawnemhe, thank you for this fix. Could you write a test for it too?

[shawnemhe]

Hi @youtux, it is testing now by parametrizing the testdir fixture so that of the cucumber tests run with and without a missing subdirectory.