File: count5.js

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mongodb 1%3A2.0.6-1.1
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t = db.count5;
t.drop();

for ( i=0; i<100; i++ ){
    t.save( { x : i } );
}

q = { x : { $gt : 25 , $lte : 75 } };

assert.eq( 50 , t.find( q ).count() , "A" );
assert.eq( 50 , t.find( q ).itcount() , "B" );

t.ensureIndex( { x : 1 } );

assert.eq( 50 , t.find( q ).count() , "C" );
assert.eq( 50 , t.find( q ).itcount() , "D" );

assert.eq( 50 , t.find( q ).limit(1).count() , "E" );
assert.eq( 1 , t.find( q ).limit(1).itcount() , "F" );

assert.eq( 5 , t.find( q ).limit(5).size() , "G" );
assert.eq( 5 , t.find( q ).skip(5).limit(5).size() , "H" );
assert.eq( 2 , t.find( q ).skip(48).limit(5).size() , "I" );

assert.eq( 20 , t.find().limit(20).size() , "J" );

assert.eq( 0 , t.find().skip(120).size() , "K" );
assert.eq( 1 , db.$cmd.findOne( { count: "count5" } )["ok"] , "L" );
assert.eq( 1 , db.$cmd.findOne( { count: "count5", skip: 120 } )["ok"] , "M" );