Can't find a spec of untracked files

[AlexB52]

Use case

On a rails project, there are two untracked files:

• app/models/competency/assessment/assessment_date_range.rb
• spec/models/competency/assessment/assessment_date_range_spec.rb

Behaviour:
🟢 When making a change on the assessment_date_range_spec.rb, retest runs the tests of that file.
🔴 When making a change on the assessment_date_range.rb, retest doesn't find the matching test file.

Expected behaviour:
When making a change on the assessment_date_range.rb, retest should find assessment_date_range_spec.rb and its tests.