Improves config loading and tests

[flovilmart]

fixes #1319

[codecov-io]

Current coverage is 93.12%

Merging #1363 into master will increase coverage by +0.04% as of 3f07d90

@@            master   #1363   diff @@
======================================
  Files           84      84       
  Stmts         5383    5411    +28
  Branches       991     997     +6
  Methods          0       0       
======================================
+ Hit           5011    5039    +28
  Partial          9       9       
  Missed         363     363       

Review entire Coverage Diff as of 3f07d90

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