Files
mongo/jstests/core/mr_undef.js
2016-03-09 12:18:14 -05:00

29 lines
499 B
JavaScript

t = db.mr_undef;
t.drop();
outname = "mr_undef_out";
out = db[outname];
out.drop();
t.insert({x: 0});
var m = function() {
emit(this.mod, this.x);
};
var r = function(k, v) {
total = 0;
for (i in v) {
total += v[i];
}
return total;
};
res = t.mapReduce(m, r, {out: outname});
assert.eq(0, out.find({_id: {$type: 6}}).itcount(), "A1");
assert.eq(1, out.find({_id: {$type: 10}}).itcount(), "A2");
x = out.findOne();
assert.eq(x, out.findOne({_id: x["_id"]}), "A3");