Jena Conformance Suite Results

The Apache Jena SPARQL 1.1 conformance suite (approximately 1,000 tests) covers the full SPARQL 1.1 query and update specification. pg_ripple targets ≥95% pass rate on this suite as of v0.55.0.

What the Jena suite tests

The Jena conformance tests are derived from the W3C SPARQL 1.1 test suite and supplemented by Apache Jena's own test cases. They cover:

Category	Tests (approx.)	What it exercises
Basic Graph Patterns	~150	BGP matching, triple patterns, blank nodes
SPARQL Algebra	~200	UNION, OPTIONAL, MINUS, JOIN
Aggregates	~80	COUNT, SUM, AVG, GROUP BY, HAVING
Property paths	~100	`*`, `+`, `?`, `
SPARQL Update	~150	INSERT DATA, DELETE DATA, MODIFY, COPY, MOVE
SPARQL Protocol	~50	Content negotiation, result formats
Numeric/String functions	~120	All SPARQL built-in functions
RDF-star	~50	Quoted triples, TRIPLE(), isTriple()
Subqueries / VALUES	~60	Correlated sub-SELECTs, VALUES rows
Other	~40	Miscellaneous edge cases

Pass rate

The pass rate is measured by CI on each push to main using cargo test --test jena_suite. The current pass rate is ≥95%.

Badge status is updated automatically by the CI jena-suite job.

Known exclusions

Some tests in the Jena suite exercise features that are non-blocking until the full suite requirement is enforced at ≥95% pass rate:

Tests requiring named-graph write operations via SPARQL UPDATE that conflict with PostgreSQL transaction semantics (platform-specific)
Tests for features gated on spargebra SPARQL 1.2 grammar support

Running locally

# Fetch Jena test data (requires network access)
bash scripts/fetch_conformance_tests.sh --jena

# Run the suite
cargo test --test jena_suite -- --nocapture

The suite generates a report at tests/conformance/report.json.