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Tests for aggregates when the pattern match is empty (#61)
* Tests for aggregates when the pattern match is empty * Update sparql11/data-sparql11/aggregates/manifest.ttl Co-authored-by: Gregg Kellogg <[email protected]> * Update sparql11/data-sparql11/aggregates/manifest.ttl Co-authored-by: Gregg Kellogg <[email protected]> * Update sparql11/data-sparql11/aggregates/manifest.ttl Co-authored-by: Gregg Kellogg <[email protected]> * Update sparql11/data-sparql11/aggregates/manifest.ttl Co-authored-by: Gregg Kellogg <[email protected]> * Rename agg-empty-group as agg-empty-group-max; swap agg-empty-group-count 1 and 2 Co-authored-by: Gregg Kellogg <[email protected]>
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‎sparql11/data-sparql11/aggregates/agg-empty-group-count-1.rq

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PREFIX : <http://example/>
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SELECT (count(*) AS ?C)
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WHERE {
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?s :p ?x
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}
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GROUP BY ?s

‎sparql11/data-sparql11/aggregates/agg-empty-group-count-1.srj

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{
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"head": {
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"vars": [ "C" ]
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} ,
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"results": {
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"bindings": [
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]
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}
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}

‎sparql11/data-sparql11/aggregates/agg-empty-group-count-2.rq

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PREFIX : <http://example/>
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SELECT (count(*) AS ?C)
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WHERE {
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?s :p ?x
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}

‎sparql11/data-sparql11/aggregates/agg-empty-group-count-2.srj

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{
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"head": {
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"vars": [ "C" ]
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} ,
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"results": {
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"bindings": [
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{
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"C": { "type": "literal" , "datatype": "http://www.w3.org/2001/XMLSchema#integer" , "value": "0" }
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}
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]
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}
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}

‎sparql11/data-sparql11/aggregates/agg-empty-group.rq renamed to ‎sparql11/data-sparql11/aggregates/agg-empty-group-max-1.rq

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‎sparql11/data-sparql11/aggregates/agg-empty-group2.srx renamed to ‎sparql11/data-sparql11/aggregates/agg-empty-group-max-1.srx

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<variable name="max"/>
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</head>
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<results>
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<result>
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</result>
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</results>
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</sparql>

‎sparql11/data-sparql11/aggregates/agg-empty-group-max-2.rq

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PREFIX ex: <http://example.com/>
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SELECT (MAX(?value) AS ?max)
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WHERE {
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?x ex:p ?value
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}

‎sparql11/data-sparql11/aggregates/agg-empty-group-max-2.srx

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<?xml version="1.0"?>
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<sparql xmlns="http://www.w3.org/2005/sparql-results#">
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<head>
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<variable name="max"/>
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</head>
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<results>
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<result>
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</result>
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</results>
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</sparql>

‎sparql11/data-sparql11/aggregates/manifest.ttl

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:agg-sample-01
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:agg-err-01
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:agg-err-02
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:agg-empty-group2
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:agg-empty-group-max-1
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:agg-empty-group-max-2
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:agg-empty-group-count-1
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:agg-empty-group-count-2
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) .
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mf:result <agg-err-02.srx>
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.
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:agg-empty-group2 rdf:type mf:QueryEvaluationTest ;
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mf:name "agg empty group" ;
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mf:name "Aggregate over empty group resulting in a row with unbound variables" ;
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## Aggregate on empty pattern match.
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:agg-empty-group-max-1 rdf:type mf:QueryEvaluationTest ;
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mf:name "agg on empty set, explicit grouping" ;
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rdfs:comment "aggregating empty results returns no rows, as there are no grouped results." ;
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mf:feature sparql:aggregate ;
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mf:action
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[ qt:query <agg-empty-group-max-1.rq> ;
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qt:data <empty.ttl> ] ;
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mf:result <agg-empty-group-max-1.srx>
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.
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:agg-empty-group-max-2 rdf:type mf:QueryEvaluationTest ;
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mf:name "agg on empty set, no grouping" ;
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rdfs:comment "aggregating empty results with no group-by always returns a single result." ;
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mf:feature sparql:aggregate ;
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rdfs:seeAlso <http://answers.semanticweb.com/questions/17410/semantics-of-sparql-aggregates> ;
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dawgt:approval dawgt:Approved ;
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dawgt:approvedBy <http://www.w3.org/2009/sparql/meeting/2012-10-30#resolution_2> ;
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mf:action
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[ qt:query <agg-empty-group.rq> ;
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[ qt:query <agg-empty-group-max-2.rq> ;
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qt:data <empty.ttl> ] ;
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mf:result <agg-empty-group2.srx>
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mf:result <agg-empty-group-max-2.srx>
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.
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:agg-empty-group-count-1 rdf:type mf:QueryEvaluationTest ;
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mf:name "COUNT: no match, with group";
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rdfs:comment "counting no results with grouping returns no results." ;
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mf:action
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[ qt:query <agg-empty-group-count-1.rq> ;
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qt:data <empty.ttl> ] ;
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mf:result <agg-empty-group-count-1.srj>
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.
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:agg-empty-group-count-2 rdf:type mf:QueryEvaluationTest ;
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mf:name "COUNT: no match, no group" ;
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rdfs:comment "counting no results without grouping always returns a single result." ;
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mf:action
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[ qt:query <agg-empty-group-count-2.rq> ;
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qt:data <empty.ttl> ] ;
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mf:result <agg-empty-group-count-2.srj>
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.

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