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Diffstat (limited to 'jstests/core/orf.js')
-rw-r--r-- | jstests/core/orf.js | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/jstests/core/orf.js b/jstests/core/orf.js new file mode 100644 index 00000000000..720b5b31f0c --- /dev/null +++ b/jstests/core/orf.js @@ -0,0 +1,27 @@ +// Test a query with 200 $or clauses + +t = db.jstests_orf; +t.drop(); + +var a = []; +var expectBounds = []; +for( var i = 0; i < 200; ++i ) { + a.push( {_id:i} ); + expectBounds.push([i, i]); +} +a.forEach( function( x ) { t.save( x ); } ); + +// This $or query is answered as an index scan over +// a series of _id index point intervals. +explain = t.find( {$or:a} ).hint( {_id: 1} ).explain( true ); +printjson( explain ); +assert.eq( 'BtreeCursor _id_', explain.cursor, 'cursor' ); +assert.eq( expectBounds, explain.indexBounds['_id'], 'indexBounds' ); +assert.eq( 200, explain.n, 'n' ); +assert.eq( 200, explain.nscanned, 'nscanned' ); +assert.eq( 200, explain.nscannedObjects, 'nscannedObjects' ); +assert.eq( false, explain.isMultiKey, 'isMultiKey' ); +assert.eq( false, explain.scanAndOrder, 'scanAndOrder' ); +assert.eq( false, explain.indexOnly, 'indexOnly' ); + +assert.eq( 200, t.count( {$or:a} ) ); |