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// Tests that save style updates correctly change immutable fields
(function() {
'use strict';
var st = new ShardingTest({shards: 2, mongos: 1});
var mongos = st.s;
var config = mongos.getDB("config");
var coll = mongos.getCollection(jsTestName() + ".coll1");
assert.commandWorked(config.adminCommand({enableSharding: coll.getDB() + ""}));
st.ensurePrimaryShard(coll.getDB().getName(), st.shard0.shardName);
assert.commandWorked(config.adminCommand({shardCollection: "" + coll, key: {a: 1}}));
const shard0Coll = st.shard0.getCollection(coll.getFullName());
// Full shard key in save
assert.commandWorked(shard0Coll.save({_id: 1, a: 1}));
// Full shard key on replacement (basically the same as above)
shard0Coll.remove({});
assert.commandWorked(shard0Coll.update({_id: 1}, {a: 1}, true));
// Full shard key after $set
shard0Coll.remove({});
assert.commandWorked(shard0Coll.update({_id: 1}, {$set: {a: 1}}, true));
// Update existing doc (replacement), same shard key value
assert.commandWorked(shard0Coll.update({_id: 1}, {a: 1}));
// Update existing doc ($set), same shard key value
assert.commandWorked(shard0Coll.update({_id: 1}, {$set: {a: 1}}));
st.stop();
})();
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