ruby module NameError: uninitialized constant error

Question

I am trying to create a gem, but when trying to load a module in test I get the following error. I used "Configurable Ruby gems: Custom error messages and testing" to set environment variables from users and that's where most of the code is from.

  1) Msg91sms::Configuration with configuration block returns the correct authkey
     Failure/Error: raise Errors::Configuration, "Msg94 auth key missing!" unless @authkey

     NameError:
       uninitialized constant Msg91sms::Configuration::Errors
     # ./lib/msg91sms/configuration.rb:10:in `authkey'
     # ./spec/msg91sms/configuration_spec.rb:7:in `block (3 levels) in <top (required)>'

but as per the folder structure and everything this should be Msg91sms::Errors::Configuration. I put only one here even though all tests are failing due to improper module loading.

The gem with this error can be found here: https://github.com/flyingboy007/msg91sms/tree/development

bundle exec rspec will throw all errors.

It should be something with naming or improper loading. But I can't figure out.

After following the answer by @sergio, I am now getting this error:

  1) Msg91sms::Configuration with configuration block returns the correct authkey
     Failure/Error: raise ::Msg91sms::Errors::Configuration, "Msg91 auth key missing!" unless @authkey

     NameError:
       uninitialized constant Msg91sms::Errors
     # ./lib/msg91sms/configuration.rb:10:in `authkey'
     # ./spec/msg91sms/configuration_spec.rb:7:in `block (3 levels) in <top (required)>'

Could someone tell me what am doing wrong here?

The folder structure is like Errors::Configuration but the error is showing like Configuration::Errors..Dont know why.. — Abhilash
– Abhilash, Commented Jun 5, 2017 at 18:23
module Msg94sms module Errors class Configuration < StandardError; end end end — Abhilash
– Abhilash, Commented Jun 5, 2017 at 18:24

Sergio Tulentsev · Accepted Answer · 2017-06-05 18:42:50Z

2

raise Errors::Configuration, "Msg94 auth key missing!" unless @authkey

Use fully qualified name to help ruby lookup the class.

raise ::Msg91sms::Errors::Configuration, "Msg94 auth key missing!" unless @authkey

The folder structure is like Errors::Configuration but the error is showing like Configuration::Errors..Dont know why..

It's trying to find Errors::Configuration within Msg91sms::Configuration (the current scope at that point). But since there's no Msg91sms::Configuration::Errors, it fails with that message.

edited Jun 5, 2017 at 18:42

answered Jun 5, 2017 at 18:24

Sergio Tulentsev

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5 Comments

Abhilash Over a year ago

looks like it was the issue there but now am getting a different error. Please see the update in the question. Thank you.

Sergio Tulentsev Over a year ago

@Abhilash: that is indeed another error, but I'll give you a hint. The file with that class is not loaded. How can you make it loaded? How do you load files in ruby?

Abhilash Over a year ago

indeed matee.. Thanks a lot for the info and the hint

Abhilash Over a year ago

First was an error i didnt think of... I looked at every possible thing I know about like loading and naming. With your help when i solved I saw another error. But this time I stopped thinking as I thought it was something I didnt know about. But I was wrong again. I forget that simple thing..loading!!!! Thank you for the help.

Sergio Tulentsev Over a year ago

@Abhilash: my pleasure :)

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