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// Tests that manipulating the featureCompatibilityVersion document in admin.system.version changes
// the value of the featureCompatibilityVersion server parameter.
(function() {
"use strict";
load("jstests/libs/feature_compatibility_version.js");
const conn = MongoRunner.runMongod({});
assert.neq(null, conn, "mongod was unable to start up");
let adminDB = conn.getDB("admin");
// Initially the featureCompatibilityVersion is latestFCV.
checkFCV(adminDB, latestFCV);
// Updating the featureCompatibilityVersion document changes the featureCompatibilityVersion
// server parameter.
assert.commandWorked(adminDB.system.version.update({_id: "featureCompatibilityVersion"},
{$set: {version: lastStableFCV}}));
checkFCV(adminDB, lastStableFCV);
assert.commandWorked(
adminDB.system.version.update({_id: "featureCompatibilityVersion"},
{$set: {version: lastStableFCV, targetVersion: latestFCV}}));
checkFCV(adminDB, lastStableFCV, latestFCV);
assert.commandWorked(
adminDB.system.version.update({_id: "featureCompatibilityVersion"},
{$set: {version: lastStableFCV, targetVersion: lastStableFCV}}));
checkFCV(adminDB, lastStableFCV, lastStableFCV);
assert.commandWorked(
adminDB.system.version.update({_id: "featureCompatibilityVersion"},
{$set: {version: latestFCV}, $unset: {targetVersion: true}}));
checkFCV(adminDB, latestFCV);
// Updating the featureCompatibilityVersion document with an invalid version fails.
assert.writeErrorWithCode(
adminDB.system.version.update({_id: "featureCompatibilityVersion"}, {$set: {version: "3.2"}}),
ErrorCodes.BadValue);
checkFCV(adminDB, latestFCV);
// Updating the featureCompatibilityVersion document with an invalid targetVersion fails.
assert.writeErrorWithCode(adminDB.system.version.update({_id: "featureCompatibilityVersion"},
{$set: {targetVersion: lastStableFCV}}),
ErrorCodes.BadValue);
checkFCV(adminDB, latestFCV);
assert.writeErrorWithCode(adminDB.system.version.update({_id: "featureCompatibilityVersion"},
{$set: {targetVersion: latestFCV}}),
ErrorCodes.BadValue);
checkFCV(adminDB, latestFCV);
MongoRunner.stopMongod(conn);
}());
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