[Feat]: Missing tests for inventory files parser

[al-matushkin]

Is your feature request related to a problem? Please describe

TestParseInventoryFile effectively has no working tests, that could be changed
Comment to the single test there says:
// TODO: some real tests, then remove @disabled

Describe the solution you'd like

New working tests need to be introduced

Describe alternatives you've considered

No response

Additional information

No response