test: Pgvector - increase unit tests coverage - #3800
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Coverage report (pgvector)
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Cover the code paths that were only reachable through the integration-marked tests, which the unit coverage badge excludes. Ten SQL builders had no test reference at all, even though they return psycopg Composed objects and need no database. They are now asserted on the SQL they render, using the _render helper the filter tests already use: - table creation, HNSW index creation for both vector and halfvec types and their build parameters, and the insert statement for every DuplicatePolicy - the count, count-distinct, min/max and unique-values queries, including pagination, the ILIKE search term, and why the unique-values query uses -> rather than ->> so numbers sort numerically - the keyword retrieval query and the three rejections in _check_and_build_embedding_retrieval_query filters.py gains the scalar comparison operators: >, >=, <, <= with their ISO date handling and type rejections, in/not in, and like/not like. The not-in test pins the IS NULL clause that keeps rows missing the field. The database-facing methods run against mocked sync and async connections and cursors, asserting the SQL and parameters handed to execute, and covering the DuplicateDocumentError and DocumentStoreError paths. A second fixture patches only the db-setup methods, so _initialize_table, delete_table and _handle_hnsw — which the shared mock_store fixture patches away — are exercised too, including the warning when an HNSW index already exists. Every async twin is covered alongside its synchronous counterpart. _ensure_db_setup and its async twin are deliberately left to the integration tests. Unit coverage: 47% -> 92%. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Proposed Changes:
vectorandhalfvectypes.filters.py(>,>=,<,<=,in,not in,like,not like)._initialize_table,delete_tableand_handle_hnsw— which the sharedmock_storefixture patches away — are exercised too.How did you test it?
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Checklist
fix:,feat:,build:,chore:,ci:,docs:,style:,refactor:,perf:,test:.