jstests/core/set5.js


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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]

t = db.set5;
t.drop();

function check(want, err) {
    var x = t.findOne();
    delete x._id;
    assert.docEq(want, x, err);
}

t.update({a: 5}, {$set: {a: 6, b: null}}, true);
check({a: 6, b: null}, "A");

t.drop();

t.update({z: 5}, {$set: {z: 6, b: null}}, true);
check({b: null, z: 6}, "B");