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/**
* Tests that the 'prepareTransaction' command fails against a replica set primary that has
* 'enableMajorityReadConcern' disabled.
*
* @tags: [uses_transactions, uses_prepare_transaction]
*/
(function() {
"use strict";
const rst = new ReplSetTest({nodes: 1, nodeOptions: {enableMajorityReadConcern: "false"}});
rst.startSet();
rst.initiate();
const dbName = "test";
const collName = "prepare_transaction_fails_without_majority_reads";
const primary = rst.getPrimary();
const testDB = primary.getDB(dbName);
assert.commandWorked(testDB.runCommand({create: collName, writeConcern: {w: "majority"}}));
const session = primary.startSession({causalConsistency: false});
const sessionDB = session.getDatabase(dbName);
const sessionColl = sessionDB.getCollection(collName);
session.startTransaction();
assert.commandWorked(sessionColl.insert({_id: 42}));
assert.commandFailedWithCode(sessionDB.adminCommand({prepareTransaction: 1}),
ErrorCodes.ReadConcernMajorityNotEnabled);
rst.stopSet();
})();
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