fix for test

Author: hmottestad

tools/workbench/src/main/java/org/eclipse/rdf4j/workbench/util/QueryEvaluator.java

@@ -550,10 +550,10 @@ private void addWorkbenchMetadata(TupleResultBuilder builder, WorkbenchRequest r
 	private List<BindingSet> collectBindingSets(TupleQueryResult result) throws QueryEvaluationException {
 		List<BindingSet> bindings = new ArrayList<>();
 		while (result.hasNext()) {
+			bindings.add(result.next());
 			if (bindings.size() % MATERIALIZATION_CHECKPOINT_INTERVAL == 0) {
-				QueryExecutionContext.checkpoint("WORKBENCH_TUPLE_RESULT");
+				checkpointMaterialization("WORKBENCH_TUPLE_RESULT");
 			}
-			bindings.add(result.next());
 		}
 		return bindings;
 	}
@@ -562,15 +562,22 @@ private List<Statement> collectStatements(GraphQuery query) throws QueryEvaluati
 		List<Statement> statements = new ArrayList<>();
 		try (var result = query.evaluate()) {
 			while (result.hasNext()) {
+				statements.add(result.next());
 				if (statements.size() % MATERIALIZATION_CHECKPOINT_INTERVAL == 0) {
-					QueryExecutionContext.checkpoint("WORKBENCH_GRAPH_RESULT");
+					checkpointMaterialization("WORKBENCH_GRAPH_RESULT");
 				}
-				statements.add(result.next());
 			}
 		}
 		return statements;
 	}
 
+	private void checkpointMaterialization(String operator) throws QueryEvaluationException {
+		QueryCircuitBreakerHandle handle = QueryExecutionContext.getHandle();
+		if (handle != null) {
+			QUERY_CIRCUIT_BREAKER.checkpoint(handle, operator);
+		}
+	}
+
 	private String extractRepositoryId(RepositoryConnection connection) {
 		if (connection == null || connection.getRepository() == null) {
 			return "unknown-workbench-repository";