// Make sure the setFeatureCompatibilityVersion command respects maxTimeMs.
// @tags: [multiversion_incompatible]
(function() {
'use strict';

var st = new ShardingTest({shards: 2});

var mongos = st.s0;
var shards = [st.shard0, st.shard1];
var admin = mongos.getDB("admin");

// Helper function to configure "maxTimeAlwaysTimeOut" fail point on shards, which forces mongod
// to throw if it receives an operation with a max time.  See fail point declaration for
// complete description.
var configureMaxTimeAlwaysTimeOut = function(mode) {
    assert.commandWorked(shards[0].getDB("admin").runCommand(
        {configureFailPoint: "maxTimeAlwaysTimeOut", mode: mode}));
    assert.commandWorked(shards[1].getDB("admin").runCommand(
        {configureFailPoint: "maxTimeAlwaysTimeOut", mode: mode}));
};

jsTestLog("Positive test for setFeatureCompatibilityVersion");
configureMaxTimeAlwaysTimeOut("alwaysOn");
assert.commandFailedWithCode(
    admin.runCommand({setFeatureCompatibilityVersion: lastLTSFCV, maxTimeMS: 1000 * 60 * 60 * 24}),
    ErrorCodes.MaxTimeMSExpired,
    "expected setFeatureCompatibilityVersion to fail due to maxTimeAlwaysTimeOut fail point");

jsTestLog("Negative test for setFeatureCompatibilityVersion to downgrade");
configureMaxTimeAlwaysTimeOut("off");
assert.commandWorked(
    admin.runCommand({setFeatureCompatibilityVersion: lastLTSFCV, maxTimeMS: 1000 * 60 * 60 * 24}),
    "expected setFeatureCompatibilityVersion to not hit time limit in mongod");

jsTestLog("Negative test for setFeatureCompatibilityVersion to upgrade");
assert.commandWorked(
    admin.runCommand({setFeatureCompatibilityVersion: latestFCV, maxTimeMS: 1000 * 60 * 60 * 24}),
    "expected setFeatureCompatibilityVersion to not hit time limit in mongod");

st.stop();
})();