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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]
/**
* Tests that replacing a document with an equivalent document with different types for the fields
* will update the index entries associated with that document.
*/
load("jstests/libs/analyze_plan.js"); // For 'isIndexOnly'.
(function() {
"use strict";
var coll = db.index_type_change;
coll.drop();
assert.commandWorked(coll.ensureIndex({a: 1}));
assert.writeOK(coll.insert({a: 2}));
assert.eq(1, coll.find({a: {$type: "double"}}).itcount());
var newVal = new NumberLong(2);
var res = coll.update({}, {a: newVal}); // Replacement update.
assert.writeOK(res);
assert.eq(res.nMatched, 1);
if (coll.getMongo().writeMode() == "commands")
assert.eq(res.nModified, 1);
// Make sure it actually changed the type.
assert.eq(1, coll.find({a: {$type: "long"}}).itcount());
// Now use a covered query to ensure the index entry has been updated.
// First make sure it's actually using a covered index scan.
var explain = coll.explain().find({a: 2}, {_id: 0, a: 1});
assert(isIndexOnly(explain));
var updated = coll.findOne({a: 2}, {_id: 0, a: 1});
assert(updated.a instanceof NumberLong, "Index entry did not change type");
})();
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