mongodb/jstests/in3.js

t = db.jstests_in3;

t.drop();
t.ensureIndex( {i:1} );
assert.eq( {i:[[3,3]]}, t.find( {i:{$in:[3]}} ).explain().indexBounds , "A1" );
assert.eq( {i:[[3,3],[6,6]]}, t.find( {i:{$in:[3,6]}} ).explain().indexBounds , "A2" );

for ( var i=0; i<20; i++ )
    t.insert( { i : i } );

assert.eq( 3 , t.find( {i:{$in:[3,6]}} ).explain().nscanned , "B1" )
SERVER-692 replace startKey/endKey with indexBounds 2010-03-03 10:46:31 +01:00			`t = db.jstests_in3;`

			`t.drop();`
			`t.ensureIndex( {i:1} );`
SERVER-802 update explain format 2010-07-16 14:09:10 +02:00			`assert.eq( {i:[[3,3]]}, t.find( {i:{$in:[3]}} ).explain().indexBounds , "A1" );`
			`assert.eq( {i:[[3,3],[6,6]]}, t.find( {i:{$in:[3,6]}} ).explain().indexBounds , "A2" );`
better $in explain test 2010-03-15 20:51:34 +01:00
			`for ( var i=0; i<20; i++ )`
			`t.insert( { i : i } );`

SERVER-1528 account for expensive skipping operations in nscanned 2010-08-04 05:09:16 +02:00			`assert.eq( 3 , t.find( {i:{$in:[3,6]}} ).explain().nscanned , "B1" )`