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path: root/jstests/aggregation/bugs/server11118.js
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// SERVER-11118 Tests for $dateToString
(function() {
    "use strict";

    load('jstests/aggregation/extras/utils.js');

    const coll = db.server11118;

    // Used to verify expected output format
    function testFormat(date, formatStr, expectedStr) {
        coll.drop();
        assert.writeOK(coll.insert({date: date}));

        const res =
            coll.aggregate([{
                    $project:
                        {_id: 0, formatted: {$dateToString: {format: formatStr, date: "$date"}}}
                }])
                .toArray();

        assert.eq(res[0].formatted, expectedStr);
    }

    // Used to verify that server recognizes bad formats
    function testFormatError(formatObj, errCode) {
        coll.drop();
        assert.writeOK(coll.insert({date: ISODate()}));

        assertErrorCode(coll, {$project: {_id: 0, formatted: {$dateToString: formatObj}}}, errCode);
    }

    // Used to verify that only date values are accepted for date parameter
    function testDateValueError(dateVal, errCode) {
        coll.drop();
        assert.writeOK(coll.insert({date: dateVal}));

        assertErrorCode(
            coll, {$project: {formatted: {$dateToString: {format: "%Y", date: "$date"}}}}, errCode);
    }

    const now = ISODate();

    // Use all modifiers we can test with js provided function
    testFormat(now, "%%-%Y-%m-%d-%H-%M-%S-%L", [
        "%",
        now.getUTCFullYear().zeroPad(4),
        (now.getUTCMonth() + 1).zeroPad(2),
        now.getUTCDate().zeroPad(2),
        now.getUTCHours().zeroPad(2),
        now.getUTCMinutes().zeroPad(2),
        now.getUTCSeconds().zeroPad(2),
        now.getUTCMilliseconds().zeroPad(3)
    ].join("-"));

    // Padding tests
    const padme = ISODate("2001-02-03T04:05:06.007Z");

    testFormat(padme, "%%", "%");
    testFormat(padme, "%Y", padme.getUTCFullYear().zeroPad(4));
    testFormat(padme, "%m", (padme.getUTCMonth() + 1).zeroPad(2));
    testFormat(padme, "%d", padme.getUTCDate().zeroPad(2));
    testFormat(padme, "%H", padme.getUTCHours().zeroPad(2));
    testFormat(padme, "%M", padme.getUTCMinutes().zeroPad(2));
    testFormat(padme, "%S", padme.getUTCSeconds().zeroPad(2));
    testFormat(padme, "%L", padme.getUTCMilliseconds().zeroPad(3));

    // no space and multiple characters between modifiers
    testFormat(now, "%d%d***%d***%d**%d*%d", [
        now.getUTCDate().zeroPad(2),
        now.getUTCDate().zeroPad(2),
        "***",
        now.getUTCDate().zeroPad(2),
        "***",
        now.getUTCDate().zeroPad(2),
        "**",
        now.getUTCDate().zeroPad(2),
        "*",
        now.getUTCDate().zeroPad(2)
    ].join(""));

    // JS doesn't have equivalents of these format specifiers
    testFormat(ISODate('1999-01-02 03:04:05.006Z'), "%U-%w-%j", "00-7-002");

    // Missing date
    testFormatError({format: "%Y"}, 18628);

    // Extra field
    testFormatError({format: "%Y", date: "$date", extra: "whyamIhere"}, 18534);

    // Not an object
    testFormatError(["%Y", "$date"], 18629);

    // Use invalid modifier at middle of string
    testFormatError({format: "%Y-%q", date: "$date"}, 18536);

    // Odd number of percent signs at end
    testFormatError({format: "%U-%w-%j-%%%", date: "$date"}, 18535);

    // Odd number of percent signs at middle
    // will get interpreted as an invalid modifier since it will try to use '%A'
    testFormatError({format: "AAAAA%%%AAAAAA", date: "$date"}, 18536);

    // Format parameter not a string
    testFormatError({format: {iamalion: "roar"}, date: "$date"}, 18533);

    ///
    /// Additional Tests
    ///

    // Test document
    const date = ISODate("1999-08-29");

    testFormat(date, "%%d", "%d");

    // A very long string of "%"s
    const longstr = Array(1000).join("%%");
    const halfstr = Array(1000).join("%");
    testFormat(date, longstr, halfstr);

    // Dates as null (should return a null)
    testFormat(null, "%Y", null);

    ///
    /// Using non-date fields as date parameter *should fail*
    ///

    // Array
    testDateValueError([], 16006);
    testDateValueError([1, 2, 3], 16006);

    // Sub-object
    testDateValueError({}, 16006);
    testDateValueError({a: 1}, 16006);

    // String
    testDateValueError("blahblahblah", 16006);

    // Integer
    testDateValueError(1234, 16006);

    ///
    /// Using non-string fields as format strings
    ///

    // Array
    testFormatError({format: [], date: "$date"}, 18533);
    testFormatError({format: [1, 2, 3], date: "$date"}, 18533);

    // Integer
    testFormatError({format: 1, date: "$date"}, 18533);

    // Date
    testFormatError({format: ISODate(), date: "$date"}, 18533);
})();