Increase eventhub and cosmosdb test code coverage to above 90%.

[codecov[bot]]

Codecov Report

Merging #133 (42e4729) into dev (6e4fd78) will increase coverage by 0.15%. The diff coverage is n/a.

:exclamation: Current head 42e4729 differs from pull request most recent head 059beff. Consider uploading reports for the commit 059beff to get more accurate results

@@            Coverage Diff             @@
##              dev     #133      +/-   ##
==========================================
+ Coverage   87.10%   87.25%   +0.15%     
==========================================
  Files          51       50       -1     
  Lines        2946     2903      -43     
  Branches      393      391       -2     
==========================================
- Hits         2566     2533      -33     
+ Misses        302      296       -6     
+ Partials       78       74       -4     

Flag	Coverage Δ
unittests	87.22% <ø> (+0.15%)	:arrow_up:

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Impacted Files	Coverage Δ
azure/functions/http.py	53.94% <0.00%> (-30.27%)	:arrow_down:
azure/functions/_http.py	91.30% <0.00%> (-1.74%)	:arrow_down:
azure/functions/decorators/function_app.py	98.67% <0.00%> (-0.08%)	:arrow_down:
azure/functions/decorators/constants.py	100.00% <0.00%> (ø)
azure/functions/decorators/table.py
azure/functions/eventhub.py	88.54% <0.00%> (+19.08%)	:arrow_up:
azure/functions/cosmosdb.py	100.00% <0.00%> (+25.64%)	:arrow_up:

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