As part of deepset-ai/haystack#10799, async test mixin classes are being added to haystack.testing.document_store. Once those are in place, the pgvector integration should inherit the relevant mixins to avoid maintaining duplicate test code.

What needs to be done

In integrations/pgvector/tests/test_document_store_async.py, update the async test class to inherit the appropriate mixin classes:

from haystack.testing.document_store import (
    DocumentStoreBaseExtendedAsyncTests,
    CountDocumentsByFilterAsyncTest,
    CountUniqueMetadataByFilterAsyncTest,
    GetMetadataFieldsInfoAsyncTest,
    GetMetadataFieldMinMaxAsyncTest,
    GetMetadataFieldUniqueValuesAsyncTest,
)

Tests that can be removed (covered by mixins)

• test_write_documents
• test_count_documents
• test_filter_documents
• test_delete_documents
• test_delete_all_documents_async
• test_delete_by_filter_async
• test_delete_by_filter_async_no_matches
• test_delete_by_filter_async_advanced_filters
• test_update_by_filter_async
• test_update_by_filter_async_multiple_fields
• test_update_by_filter_async_no_matches
• test_update_by_filter_async_advanced_filters
• test_count_documents_by_filter_async
• test_count_unique_metadata_by_filter_async
• test_get_metadata_fields_info_async
• test_get_metadata_field_min_max_async
• test_get_metadata_field_unique_values_async

Tests to keep (pgvector-specific)

• test_write_blob
• test_connection_check_and_recreation
• test_invalid_connection_string
• test_hnsw_index_recreation
• test_create_table_if_not_exists
• test_delete_table_async_first_call
• test_update_by_filter_async_empty_meta_raises_error (pgvector-specific validation)

Acceptance criteria

• The async test class inherits the relevant async mixin classes
• The document_store async fixture is correctly wired up
• All duplicate tests listed above are removed
• All pgvector-specific tests are preserved
• The full test suite passes