[Release Test Automation] Product Import: verifying and adding test-cases

[filipefurtad0]

What we should change and why (this is tech debt)

We need to check whether the Product Import feature is well covered, in order to confidently remove it from the list of items to be manually tested, during release testing.

Relevant files are:

spec/models/product_importer_spec.rb
spec/features/admin/product_import_spec.rb

Context

Came up in the context of release test automation.

Impact and timeline

Transition to continuous delivery.