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/**
* Tests prepared transaction abort support.
*
* @tags: [uses_transactions, uses_prepare_transaction]
*/
(function() {
"use strict";
load("jstests/core/txns/libs/prepare_helpers.js");
const dbName = "test";
const collName = "abort_prepared_transaction";
const testDB = db.getSiblingDB(dbName);
const testColl = testDB.getCollection(collName);
testColl.drop({writeConcern: {w: "majority"}});
assert.commandWorked(testDB.runCommand({create: collName, writeConcern: {w: "majority"}}));
const session = db.getMongo().startSession({causalConsistency: false});
const sessionDB = session.getDatabase(dbName);
const sessionColl = sessionDB.getCollection(collName);
const doc1 = {_id: 1, x: 1};
// ---- Test 1. Insert a single document and run prepare. ----
session.startTransaction();
assert.commandWorked(sessionColl.insert(doc1));
// Insert should not be visible outside the session.
assert.eq(null, testColl.findOne(doc1));
// Insert should be visible in this session.
assert.eq(doc1, sessionColl.findOne(doc1));
PrepareHelpers.prepareTransaction(session);
assert.commandWorked(session.abortTransaction_forTesting());
// After abort the insert is rolled back.
assert.eq(null, testColl.findOne(doc1));
// ---- Test 2. Update a document and run prepare. ----
// Insert a document to update.
assert.commandWorked(sessionColl.insert(doc1, {writeConcern: {w: "majority"}}));
session.startTransaction();
assert.commandWorked(sessionColl.update(doc1, {$inc: {x: 1}}));
const doc2 = {_id: 1, x: 2};
// Update should not be visible outside the session.
assert.eq(null, testColl.findOne(doc2));
// Update should be visible in this session.
assert.eq(doc2, sessionColl.findOne(doc2));
PrepareHelpers.prepareTransaction(session);
assert.commandWorked(session.abortTransaction_forTesting());
// After abort the update is rolled back.
assert.eq(doc1, testColl.findOne({_id: 1}));
// ---- Test 3. Delete a document and run prepare. ----
// Update the document.
assert.commandWorked(sessionColl.update(doc1, {$inc: {x: 1}}, {writeConcern: {w: "majority"}}));
session.startTransaction();
assert.commandWorked(sessionColl.remove(doc2, {justOne: true}));
// Delete should not be visible outside the session, so the document should be.
assert.eq(doc2, testColl.findOne(doc2));
// Document should not be visible in this session, since the delete should be visible.
assert.eq(null, sessionColl.findOne(doc2));
PrepareHelpers.prepareTransaction(session);
assert.commandWorked(session.abortTransaction_forTesting());
// After abort the delete is rolled back.
assert.eq(doc2, testColl.findOne(doc2));
}());
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