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test(store): cover the id-only projection through QueryUtil.buildPlan #3410

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Merged
imbajin merged 1 commit into from
Oct 27, 2026
Merged

test(store): cover the id-only projection through QueryUtil.buildPlan #3410

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30 changes: 30 additions & 0 deletions ...re-test/src/main/java/org/apache/hugegraph/store/node/grpc/query/ProjectionStageTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,10 @@
import org.apache.hugegraph.rocksdb.access.RocksDBSession.BackendColumn;
import org.apache.hugegraph.rocksdb.access.ScanIterator;
import org.apache.hugegraph.store.business.itrv2.MapLimitIterator;
import org.apache.hugegraph.store.grpc.query.QueryRequest;
import org.apache.hugegraph.store.node.grpc.query.model.PipelineResult;
import org.apache.hugegraph.store.node.grpc.query.model.QueryPlan;
import org.apache.hugegraph.store.node.grpc.query.stages.EarlyStopException;
import org.apache.hugegraph.store.node.grpc.query.stages.ProjectionStage;
import org.junit.Test;

Expand Down Expand Up @@ -81,6 +84,33 @@ public void testLimitDedupStillDropsCopiesAfterProjection() {
assertEquals(IntStream.range(0, KEYS).boxed().collect(Collectors.toSet()), keys);
}

@Test
public void testLimitDedupStillDropsCopiesThroughIdOnlyPlan() throws EarlyStopException {
// sample_factor defaults to 0.0, which builds a stop-only plan
QueryRequest request = QueryRequest.newBuilder()
.setSampleFactor(1.0)
.setNullProperty(true)
.build();
QueryPlan plan = QueryUtil.buildPlan(request);
assertEquals("QueryPlan{stages=[PROJECTION_STAGE]}", plan.toString());
ScanIterator dedup = new MapLimitIterator<BackendColumn>(scanTwice());

Set<Integer> keys = new HashSet<>();
try {
while (dedup.hasNext()) {
BackendColumn column = dedup.next();
PipelineResult result = (PipelineResult) plan.execute(new PipelineResult(column));
assertArrayEquals(new byte[0], result.getColumn().value);
int key = ByteBuffer.wrap(result.getColumn().name).getInt();
assertTrue("key " + key + " emitted twice", keys.add(key));
}
} finally {
dedup.close();
}

assertEquals(IntStream.range(0, KEYS).boxed().collect(Collectors.toSet()), keys);
}

private static ProjectionStage removeAllProperty() {
ProjectionStage stage = new ProjectionStage();
stage.init(List.of(), true);
Expand Down
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