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30 lines
1.6 KiB
JavaScript
30 lines
1.6 KiB
JavaScript
// test that or duplicates are dropped in certain special cases
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t = db.jstests_orc;
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t.drop();
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// The goal here will be to ensure the full range of valid values is scanned for each or clause, in order to ensure that
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// duplicates are eliminated properly in the cases below when field range elimination is not employed. The deduplication
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// of interest will occur on field a. The range specifications for fields b and c are such that (in the current
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// implementation) field range elimination will not occur between the or clauses, meaning that the full range of valid values
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// will be scanned for each clause and deduplication will be forced.
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// NOTE This test uses some tricks to avoid or range elimination, but in future implementations these tricks may not apply.
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// Perhaps it would be worthwhile to create a mode where range elimination is disabled so it will be possible to write a more
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// robust test.
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t.ensureIndex( {a:-1,b:1,c:1} );
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// sanity test
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t.save( {a:null,b:4,c:4} );
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assert.eq( 1, t.count( {$or:[{a:null,b:{$gte:0,$lte:5},c:{$gte:0,$lte:5}},{a:null,b:{$gte:3,$lte:8},c:{$gte:3,$lte:8}}]} ) );
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// from here on is SERVER-2245
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t.remove();
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t.save( {b:4,c:4} );
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assert.eq( 1, t.count( {$or:[{a:null,b:{$gte:0,$lte:5},c:{$gte:0,$lte:5}},{a:null,b:{$gte:3,$lte:8},c:{$gte:3,$lte:8}}]} ) );
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//t.remove();
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//t.save( {a:[],b:4,c:4} );
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//printjson( t.find( {$or:[{a:[],b:{$gte:0,$lte:5},c:{$gte:0,$lte:5}},{a:[],b:{$gte:3,$lte:8},c:{$gte:3,$lte:8}}]} ).explain() );
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//assert.eq( 1, t.count( {$or:[{a:[],b:{$gte:0,$lte:5},c:{$gte:0,$lte:5}},{a:[],b:{$gte:3,$lte:8},c:{$gte:3,$lte:8}}]} ) );
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