Files
mongo/jstests/aggregation/bugs/server6275.js
Matt Dannenberg 186c5a411c SERVER-6275 SERVER-6197 use double for $avg
also do not count non-numeric types in $avg
also part of SERVER-6166 up convert from int to long on $sum
2012-07-27 15:21:43 -04:00

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JavaScript

// confirm that undefined no longer counts as 0 in $avg
c = db.c;
c.drop();
c.save({a:1});
c.save({a:4});
c.save({b:1});
assert.eq(c.aggregate({$group:{_id: null, avg:{$avg:"$a"}}}).result[0].avg, 2.5);
// again ensuring numberLongs work properly
c.drop();
c.save({a:NumberLong(1)});
c.save({a:NumberLong(4)});
c.save({b:NumberLong(1)});
assert.eq(c.aggregate({$group:{_id: null, avg:{$avg:"$a"}}}).result[0].avg, 2.5);