Capitalization and abbreviation normalizers can cause errors when combined

[orangejulius]

The fuzzy-tester has various "normalizers" for adjusting both the expected and actual value of test results to ignore minor differences, like capitalization.

Right now, combining these normalizers in certain ways can lead to false reports of test failures. This happens, at least in part, because normalizers such as abbreviateDirectionals operate only on capitalized variants of the directionals.

For example, here's the output of an autocomplete run with the following normalizer settings:

"normalizers": {                                                                                                                                          
  "street": [                                                                                                                                             
    "toLowerCase",                                                                                                                                     
    "abbreviateDirectionals"                                                                                                                              
  ]                                                                                                                                                       
},

There's a distinctive pattern of "alternating" passes and fails. This is only an artifact of running the tests, and not actually a real thing.

Until we fix this, as a workaround, be sure to specify toUpperCase before any directional/abbreviation normalizers, and then optionally use toLowerCase after those normalizers if you want the output to be compared in lower case.

Here's the same test run with the following normalizers:

"normalizers": {                                                                                                                                          
   "street": [                                                                                                                                             
    "toUpperCase",                                                                                                                                        
    "abbreviateDirectionals",                                                                                                                             
    "toLowerCase"                                                                                                                                         
  ]                                                                                                                                                       
},