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// Cannot implicitly shard accessed collections because of following errmsg: A single
// update/delete on a sharded collection must contain an exact match on _id or contain the shard
// key.
// @tags: [assumes_unsharded_collection]
let t = db.updated;
t.drop();
let o = {_id: Math.random(), items: [null, null, null, null]};
t.insert(o);
assert.docEq(o, t.findOne(), "A1");
o.items[0] = {
amount: 9000,
itemId: 1
};
t.update({}, {$set: {"items.0": o.items[0]}});
assert.docEq(o, t.findOne(), "A2");
o.items[0].amount += 1000;
o.items[1] = {
amount: 1,
itemId: 2
};
t.update({}, {$inc: {"items.0.amount": 1000}, $set: {"items.1": o.items[1]}});
assert.docEq(o, t.findOne(), "A3");
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