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/**
* Tests that a v4.0 mongod cannot start up if any collection is missing a UUID.
*
* Utilizes a v3.6 binary and downgrade to FCV 3.4 to set up collections without UUIDs
*/
(function() {
"use strict";
let dbpath = MongoRunner.dataPath + "startup_without_UUIDs";
resetDbpath(dbpath);
let connection;
jsTest.log("Set up a v3.6 binary downgraded to FCV 3.4 without collection UUIDs.");
connection = MongoRunner.runMongod({dbpath: dbpath, binVersion: "3.6"});
assert.commandWorked(connection.adminCommand({setFeatureCompatibilityVersion: "3.4"}));
MongoRunner.stopMongod(connection);
jsTest.log("Attempting v4.0 --repair should fail because collections lack UUIDs.");
let returnCode =
runMongoProgram("mongod", "--port", connection.port, "--repair", "--dbpath", dbpath);
assert.neq(returnCode, 0);
jsTest.log("Trying to start up a v4.0 binary on FCV 3.4 data files should fail because the " +
"collections are missing UUIDs.");
connection = MongoRunner.runMongod({dbpath: dbpath, binVersion: "latest", noCleanData: true});
assert.eq(null, connection);
jsTest.log("Using a v3.6 binary and upgrading to FCV 3.6 should update the data files to a " +
"format acceptable to a v4.0 binary");
connection = MongoRunner.runMongod({dbpath: dbpath, binVersion: "3.6", noCleanData: true});
assert.neq(null, connection);
assert.commandWorked(connection.adminCommand({setFeatureCompatibilityVersion: "3.6"}));
MongoRunner.stopMongod(connection);
jsTest.log("Now, finally, a v4.0 binary should start up on the FCV 3.6 data files");
connection = MongoRunner.runMongod({dbpath: dbpath, binVersion: "latest", noCleanData: true});
assert.neq(null, connection);
MongoRunner.stopMongod(connection);
jsTest.log("Done!");
})();
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