Testing modules that use OpenResty components

[erikcw]

I haven't been able to find documentation anywhere on testing modules that contain OpenResty components.

For example:

redis = require "resty.redis"

-- rest of lua module I want to test

busted utils.moon
✱
0 successes / 0 failures / 1 error / 0 pending : 0.002996 seconds

Error → utils.moon @ 1
suite utils.moon
utils.moon:1: module 'resty.redis' not found:
        no field package.preload['resty.redis']
        no file './src/resty/redis.lua'
        no file './src/resty/redis/resty/redis.lua'
        no file './src/resty/redis/init.lua'
        no file '/usr/local/share/lua/5.1/resty/redis.lua'
        no file '/usr/local/share/lua/5.1/resty/redis/init.lua'
        no file '/root/.luarocks/share/lua/5.1/resty/redis.lua'
        no file '/root/.luarocks/share/lua/5.1/resty/redis/init.lua'
        no file '/usr/local/share/lua/5.1/resty/redis.lua'
        no file '/usr/local/share/lua/5.1/resty/redis/init.lua'
        no file '/root/.luarocks/share/lua/5.1/resty/redis.lua'
        no file '/root/.luarocks/share/lua/5.1/resty/redis/init.lua'
        no file '/usr/share/lua/5.1//resty/redis.lua'
        no file '/usr/share/lua/5.1//resty/redis/init.lua'
        no file './resty/redis.lua'
        no file '/usr/local/share/lua/5.1/resty/redis.lua'
        no file '/usr/local/share/lua/5.1/resty/redis/init.lua'
        no file '/usr/local/lib/lua/5.1/resty/redis.lua'
        no file '/usr/local/lib/lua/5.1/resty/redis/init.lua'
        no file '/usr/share/lua/5.1/resty/redis.lua'
        no file '/usr/share/lua/5.1/resty/redis/init.lua'
        no file './csrc/resty/redis.so'
        no file './csrc/resty/redis/resty/redis.so'
        no file '/usr/local/lib/lua/5.1/resty/redis.so'
        no file '/root/.luarocks/lib/lua/5.1/resty/redis.so'
        no file '/usr/local/lib/lua/5.1/resty/redis.so'
        no file '/root/.luarocks/lib/lua/5.1/resty/redis.so'
        no file './resty/redis.so'
        no file '/usr/local/lib/lua/5.1/resty/redis.so'
        no file '/usr/lib/x86_64-linux-gnu/lua/5.1/resty/redis.so'
        no file '/usr/lib/lua/5.1/resty/redis.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
        no file './csrc/resty.so'
        no file './csrc/resty/resty.so'
        no file '/usr/local/lib/lua/5.1/resty.so'
        no file '/root/.luarocks/lib/lua/5.1/resty.so'
        no file '/usr/local/lib/lua/5.1/resty.so'
        no file '/root/.luarocks/lib/lua/5.1/resty.so'
        no file './resty.so'
        no file '/usr/local/lib/lua/5.1/resty.so'
        no file '/usr/lib/x86_64-linux-gnu/lua/5.1/resty.so'
        no file '/usr/lib/lua/5.1/resty.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'

Seems like it must be a pretty common need to test lapis code that has OpenResty dependencies.

[starius]

Module "resty.redis" would not work outside of openresty process, because it uses nginx Lua functions, which do not exist in normal Lua process (e.g., in busted).

Lapis has a module to test applications which do requests. This topic is covered in Lapis docs.