Busted Unit Tests: can't find json library to match Solar2D

solares · March 5, 2021, 8:16pm

I’m trying to setup some unit tests with http://olivinelabs.com/busted/ outside of Solar2D.

I can’t find a json library which behaves like the one in Solar2D.

It uses . not : for calls (json.decode, json.encode etc)
it has json.prettify

Does anybody know which json library Solar2D uses, and can I install it with luarocks to run with busted?

Here it appears to use dkjson, but this doesn’t have prettify. Is it a custom library?

coronalabs/corona/blob/master/modules/json/external/dkjson.lua

-- Module options:
local always_try_using_lpeg = true
local register_global_module_table = false
local global_module_name = 'json'
local always_use_default_exception = true

--[==[

David Kolf's JSON module for Lua 5.1/5.2

Version 2.5


For the documentation see the corresponding readme.txt or visit
<http://dkolf.de/src/dkjson-lua.fsl/>.

You can contact the author by sending an e-mail to 'david' at the
domain 'dkolf.de'.

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StarCrunch · March 5, 2021, 8:33pm

It looks like prettify is assigned here.

There’s a dkjson.lua in that folder too that differs slightly from the one you cite; I don’t know which one gets used.

solares · March 6, 2021, 6:08am

Thank you!

To set it up I copied dkjson.lua and the json.lua wrapper from there to my own lib folder within my test environment. Then I said this at the top of my test code:

    -- add root of Solar2D project for my project requires
    package.path = package.path .. ';path/to/solar2D/project/?.lua'

    -- add local lib folder - any solar2D specific requires can be added here
    -- eg modules from https://github.com/coronalabs/corona/tree/master/platform/resources
    package.path = package.path .. ';lib/?.lua'

And when I require 'json' it finds this one in /lib.