Add specs for the methods in the Ci::VariablesHelper
What does this MR do and why?
This MR adds specs for variable helpers module, as the old specs didn't test for all the methods.
How to set up and validate locally
Numbered steps to set up and validate the change are strongly suggested.
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
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I have evaluated the MR acceptance checklist for this MR.
Resolves: #388681 (closed)
Edited by Laura Montemayor