String                      fn snake_toCamel            fn CamelTo_snake
  "snakeCase"                 "snakeCase"                 "snake_case"
  "snake_case"                "snakeCase"                 "snake_case"
  "variable_10_case"          "variable10Case"            "variable_10_case"
  "variable10Case"            "variable10Case"            "variable10_case"
  "ɛrgo rE tHis"              "ɛrgoRETHis"                "ɛrgo_r_e_t_his"
  "hurry-up-joe!"             "hurryUpJoe!"               "hurry_up_joe!"
  "  spaces  "                "spaces"                    "spaces"
  "c://my-docs/happy_Flag-Day/12.doc" "c://myDocs/happyFlagDay/12.doc" "c://my_docs/happy_flag_day/12.doc"