test: Qdrant - add unit tests

[anakin87]

Related Issues

• part of https://github.com/deepset-ai/haystack-private/issues/275, fixes Increase Qdrant test coverage #3141

Proposed Changes:

• add unit tests focusing mostly on uncovered paths (made with AI help)

How did you test it?

CI

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test:.

[github-actions]

Coverage report (qdrant)

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
integrations/qdrant/src/haystack_integrations/components/retrievers/qdrant
retriever.py
integrations/qdrant/src/haystack_integrations/document_stores/qdrant
converters.py
document_store.py
filters.py
Project Total

This report was generated by python-coverage-comment-action