This is a developer helper mod, allow run any lua code for testing reason. The mod can list and run lua-scripts placed in checks subfolder. some check scrips provided. The second part is able to display global lua-tables tree

Features

redirection of print() output to minetest chat. (can be disabled by changing code line "print_to_chat")
robust call of the scripts trough "pcall" does not crash the game in case of syntax- or runtime errors
all functionality available trough chat commands and the QA-Block node
refresh and list the checks script list at runtime
edit the code before calling them
type code and run them
explore global variables/lua tables

https://forum.minetest.net/viewtopic.php?f=11&t=15759

Dependencies

none
- smartfs(provided) - GUI for check selection and manipulation. Optional, but without smartfs there is limited functionality

Provided check modules

empty - Empty file for your own checks
global_variables - List suspicious global variables
is_ground_content - This checker lists all nodes for which is_ground_content == true
light_source_15 - List all nodes for which light_source >= 15
list_entities - Lists all the registered entities (except builtin)
list_spawning_mobs - List entities that are mobs from mobs_redo or compatible framework
no_item_description - Lists all items without description
same_recipe - Find duplicate crafting recipes
unobtainable_items - Lists items which seem to be unobtainable
useless_items - Lists all items which are probably useless

How to use:

add the mod to the game you like to test

Using chat command /qa

/qa help - print available chat commands
/qa ls - list all available check modules
/qa set checkname - set default check
/qa ui - display and run check using the selection dialog. Browse trough globals (smartfs only)
/qa checkname - run check
/qa - run default check

Using the block

get the QA-Block from creative inventory
place the block somewhere 3a - without smartfs - wait till the default check is finished and the block disappears 3b - with smartfs - start the check using selection dialog

In all cases - check the debug.txt for test results

Credits

Wuzzy2 - thanks for ideas, code optimizations and the most check scripts