/**
 * Tests that reads and writes in a replica set return the correct operationTime for their
 * read/write concern level. Majority reads and writes return the last committed optime's timestamp
 * and local reads and writes return the last applied optime's timestamp.
 */
(function() {
    "use strict";

    load("jstests/replsets/rslib.js");  // For startSetIfSupportsReadMajority.

    function assertCorrectOperationTime(operationTime, expectedTimestamp, opTimeType) {
        assert.eq(0,
                  timestampCmp(operationTime, expectedTimestamp),
                  "operationTime in command response, " + operationTime +
                      ", does not equal the last " + opTimeType + " timestamp, " +
                      expectedTimestamp);
    }

    var name = "command_response_operation_time";

    var replTest = new ReplSetTest(
        {name: name, nodes: 3, nodeOptions: {enableMajorityReadConcern: ""}, waitForKeys: true});

    if (!startSetIfSupportsReadMajority(replTest)) {
        jsTestLog("Skipping test since storage engine doesn't support majority read concern.");
        replTest.stopSet();
        return;
    }
    replTest.initiate();

    var res, statusRes;
    var testDB = replTest.getPrimary().getDB(name);

    jsTestLog("Executing majority write.");
    res = assert.commandWorked(
        testDB.runCommand({insert: "foo", documents: [{x: 1}], writeConcern: {w: "majority"}}));
    statusRes = assert.commandWorked(testDB.adminCommand({replSetGetStatus: 1}));
    assertCorrectOperationTime(
        res.operationTime, statusRes.optimes.lastCommittedOpTime.ts, "committed");

    jsTestLog("Executing local write.");
    res = assert.commandWorked(testDB.runCommand({insert: "foo", documents: [{x: 2}]}));
    statusRes = assert.commandWorked(testDB.adminCommand({replSetGetStatus: 1}));
    assertCorrectOperationTime(res.operationTime, statusRes.optimes.appliedOpTime.ts, "applied");

    replTest.awaitLastOpCommitted();

    jsTestLog("Executing majority read.");
    res = assert.commandWorked(
        testDB.runCommand({find: "foo", filter: {x: 1}, readConcern: {level: "majority"}}));
    statusRes = assert.commandWorked(testDB.adminCommand({replSetGetStatus: 1}));
    assertCorrectOperationTime(
        res.operationTime, statusRes.optimes.lastCommittedOpTime.ts, "committed");

    jsTestLog("Executing local read.");
    res = assert.commandWorked(testDB.runCommand({find: "foo", filter: {x: 1}}));
    statusRes = assert.commandWorked(testDB.adminCommand({replSetGetStatus: 1}));
    assertCorrectOperationTime(res.operationTime, statusRes.optimes.appliedOpTime.ts, "applied");

    replTest.stopSet();
})();