public void SparqlGroupByAggregateEmptyGroup1()
{
String query = @"PREFIX ex: <http://example.com/>
SELECT (MAX(?value) AS ?max)
WHERE {
?x ex:p ?value
}";
SparqlQuery q = new SparqlQueryParser().ParseFromString(query);
LeviathanQueryProcessor processor = new LeviathanQueryProcessor(new TripleStore());
Console.WriteLine(q.ToAlgebra().ToString());
SparqlResultSet results = processor.ProcessQuery(q) as SparqlResultSet;
if (results == null)
{
Assert.True(false, "Null results");
}
Assert.False(results.IsEmpty, "Results should not be empty");
Assert.Equal(1, results.Count);
Assert.True(results.First().All(kvp => kvp.Value == null), "Should be no bound values");
}
