json_test: Wrapper function to run tests and compare with reference
In InsightRX/json2test: Run R package tests specified in JSON

Wrapper function to run tests and compare with reference

json_test(
  func = NULL,
  package = NULL,
  test_id = NULL,
  tests = NULL,
  reference = NULL,
  delta = NULL,
  max_time = NULL,
  run = NULL,
  skip = c(),
  force = c(),
  list_as_args = TRUE,
  ignore_keys = c(),
  parse_functions = list(),
  overwrite = NULL,
  fail_if_not_exists = TRUE,
  lib = "testit",
  verbose = FALSE
)

`func`	linking to test/reference JSON and function in package to test
`package`	package name from where to take tests.json object from
`test_id`	specifies test/reference JSON to use, i.e. /home/user/R/3.3/package_name/test/<test_id>.json. If not specified, assumes 'func' is used as 'test_id'.
`tests`	a vector of tests to run
`reference`	list of reference values
`delta`	relative allowed imprecision, default is 0.03. Overrides value specified in reference JSON.
`max_time`	maximum time the test should take to run
`run`	a specific test to run only, no actual check. The output object will be returned.
`skip`	a vector of tests to skip (default is to run all)
`force`	a vector of test to override potential 'skip'.
`list_as_args`	should the list elements from the JSON be used as arguments to the function? TRUE by default. If FALSE, the list as a whole will be passed to the 'args' argument of the function.
`ignore_keys`	ignore specific keys in reference JSON, e.g. to allow for comments
`parse_functions`	list of functions to parse specific JSON tests data before calling the function. This is sometimes useful due to the back-serialization from JSON to R object.
`overwrite`	optional list specifying what keys of test JSON to manually overwrite with given values
`fail_if_not_exists`	fail if folder with JSON does not exist?
`lib`	which test library to use (testit or testthat)
`verbose`	verbosity