MDNodaHelpers/tests/NodaTimeSplitterTest.php

<?PHP
/**
 * This script contains tests for the time name splitter.
 *
 * @author Joshua Ramon Enslin <joshua@museum-digital.de>
 */
declare(strict_types = 1);
use PHPUnit\Framework\TestCase;

/**
 * This script contains tests for the time name splitter.
 *
 * @covers \NodaTimeSplitter
 */
final class NodaTimeSplitterTest extends TestCase {
    /**
     * Test to check whether the HTML page is correctly generated.
     *
     * @author Joshua Ramon Enslin <joshua@museum-digital.de>
     * @group  ValidOutput
     * @small
     *
     * @return void
     */
    public function testSplitSimpleDatesGerman():void {

        $output = NodaTimeSplitter::attempt_splitting("02.1.25 v. Chr");
        self::assertEquals($output, [
            0 => "-25",
            1 => "-25",
            2 => "01",
            3 => "02",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.25 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 25);

        $output = NodaTimeSplitter::attempt_splitting("2.01.25 v. Chr");
        self::assertEquals($output, [
            0 => "-25",
            1 => "-25",
            2 => "01",
            3 => "02",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.25 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 25);

        $output = NodaTimeSplitter::attempt_splitting("02.01.25 v. Chr");
        self::assertEquals($output, [
            0 => "-25",
            1 => "-25",
            2 => "01",
            3 => "02",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.25 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 25);

        $output = NodaTimeSplitter::attempt_splitting("2.1.25 v. Chr");
        self::assertEquals($output, [
            0 => "-25",
            1 => "-25",
            2 => "01",
            3 => "02",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.25 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 25);

        $output = NodaTimeSplitter::attempt_splitting("2.1.2020");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "02",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("02.01.2020");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "02",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("2. Januar 2020");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "02",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("1920-1929");
        self::assertEquals($output, [
            0 => "1920",
            1 => "1929",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1920-1929");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("20er");
        self::assertEquals($output, [
            0 => "1920",
            1 => "1929",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1920-1929");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("1920er Jahre");
        self::assertEquals($output, [
            0 => "1920",
            1 => "1929",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1920-1929");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("Vor Dezember 2020");
        self::assertEquals($output, [
            0 => "?",
            1 => "2020",
            2 => "12",
            3 => "00",
            4 => "+",
            5 => "Vor",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Vor Dezember 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Vor 2020");
        self::assertEquals($output, [
            0 => "?",
            1 => "2019",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "Vor",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Vor 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Nach Januar 2020");
        self::assertEquals($output, [
            0 => "2020",
            1 => "?",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "Nach",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Nach Januar 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Januar 2020");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Januar 1217");
        self::assertEquals($output, [
            0 => "1217",
            1 => "1217",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);

        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 1217");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1217);

        $output = NodaTimeSplitter::attempt_splitting("Januar 1520");
        self::assertEquals($output, [
            0 => "1520",
            1 => "1520",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);

        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 1520");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1520);

        $output = NodaTimeSplitter::attempt_splitting("Januar 1001");
        self::assertEquals($output, [
            0 => "1001",
            1 => "1001",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);

        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 1001");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1001);

        $output = NodaTimeSplitter::attempt_splitting("Januar 2780");
        self::assertEquals($output, [
            0 => "2780",
            1 => "2780",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);

        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2780");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2780);

        $output = NodaTimeSplitter::attempt_splitting("Nach 60er Jahre");
        self::assertEquals($output, [
            0 => "1970",
            1 => "?",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "Nach",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Nach 1969");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1969);

        $output = NodaTimeSplitter::attempt_splitting("Nach 2020");
        self::assertEquals($output, [
            0 => "2021",
            1 => "?",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "Nach",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Nach 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Bis Januar 2020");
        self::assertEquals($output, [
            0 => "?",
            1 => "2020",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Bis Januar 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Januar 2020");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        // Intl' month: 2020-01
        $output = NodaTimeSplitter::attempt_splitting("2020-01");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Januar 2020 v. Chr.");
        self::assertEquals($output, [
            0 => "-2020",
            1 => "-2020",
            2 => "01",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2020 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        // 5-Digit timespans BCE
        $output = NodaTimeSplitter::attempt_splitting("40000-25000 vor Christus");
        self::assertEquals($output, [
            0 => "-40000",
            1 => "-25000",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "40000-25000 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 32500);

        $output = NodaTimeSplitter::attempt_splitting("20. Jahrhundert v. Chr.");
        self::assertEquals($output, [
            0 => "-2000",
            1 => "-1901",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "2000-1901 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1950);

        $output = NodaTimeSplitter::attempt_splitting("20. Jh.");
        self::assertEquals($output, [
            0 => "1901",
            1 => "2000",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1901-2000");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1951);

        $output = NodaTimeSplitter::attempt_splitting("20. Jhd.");
        self::assertEquals($output, [
            0 => "1901",
            1 => "2000",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1901-2000");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1951);

        $output = NodaTimeSplitter::attempt_splitting("20. Jhdt.");
        self::assertEquals($output, [
            0 => "1901",
            1 => "2000",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1901-2000");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1951);

        $output = NodaTimeSplitter::attempt_splitting("20. Jahrhundert");
        self::assertEquals($output, [
            0 => "1901",
            1 => "2000",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1901-2000");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1951);

        $output = NodaTimeSplitter::attempt_splitting("20.-19. Jahrhundert v. Chr.");
        self::assertEquals($output, [
            0 => "-2000",
            1 => "-1801",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "2000-1801 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1900);

        $output = NodaTimeSplitter::attempt_splitting("Bis 20.-19. Jahrhundert v. Chr.");
        self::assertEquals($output, [
            0 => "?",
            1 => "-1801",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Bis 1801 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1801);

        $output = NodaTimeSplitter::attempt_splitting("6 November 1978");
        self::assertEquals($output, [
            0 => "1978",
            1 => "1978",
            2 => "11",
            3 => "06",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "06.11.1978");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1978);

    }

    /**
     * Test to check whether the HTML page is correctly generated.
     *
     * @author Joshua Ramon Enslin <joshua@museum-digital.de>
     * @group  ValidOutput
     * @small
     *
     * @return void
     */
    public function testSplitSimpleDatesEnglish():void {

        $output = NodaTimeSplitter::attempt_splitting("1925 BCE");
        self::assertEquals($output, [
            0 => "-1925",
            1 => "-1925",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1925 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("1925 CE");
        self::assertEquals($output, [
            0 => "1925",
            1 => "1925",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1925");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

    }

    /**
     * Test to check whether the HTML page is correctly generated.
     *
     * @author Joshua Ramon Enslin <joshua@museum-digital.de>
     * @group  ValidOutput
     * @small
     *
     * @return void
     */
    public function testSplitSimpleDatesHungarian():void {

        $output = NodaTimeSplitter::attempt_splitting("2020.01.02.");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "02",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("2020. Januar 2.");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "02",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("2020-01-02");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "02",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "02.01.2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("1920-tól 1929-ig");
        self::assertEquals($output, [
            0 => "1920",
            1 => "1929",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1920-1929");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("1920-1929 között");
        self::assertEquals($output, [
            0 => "1920",
            1 => "1929",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1920-1929");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("1920-től 1929-ig");
        self::assertEquals($output, [
            0 => "1920",
            1 => "1929",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1920-1929");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("1920-es évek");
        self::assertEquals($output, [
            0 => "1920",
            1 => "1929",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1920-1929");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1925);

        $output = NodaTimeSplitter::attempt_splitting("2020. Januar");
        self::assertEquals($output, [
            0 => "2020",
            1 => "2020",
            2 => "01",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2020");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("Kr. e. 2020. Januar");
        self::assertEquals($output, [
            0 => "-2020",
            1 => "-2020",
            2 => "01",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2020 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);

        $output = NodaTimeSplitter::attempt_splitting("20. sz");
        self::assertEquals($output, [
            0 => "1901",
            1 => "2000",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1901-2000");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1951);

        $output = NodaTimeSplitter::attempt_splitting("III. század");
        self::assertEquals($output, [
            0 => "201",
            1 => "300",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "201-300 n. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 251);

        $output = NodaTimeSplitter::attempt_splitting("20. század");
        self::assertEquals($output, [
            0 => "1901",
            1 => "2000",
            2 => "00",
            3 => "00",
            4 => "+",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "1901-2000");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1951);

        $output = NodaTimeSplitter::attempt_splitting("Kr. e. 20. század");
        self::assertEquals($output, [
            0 => "-2000",
            1 => "-1901",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "2000-1901 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1950);

        $output = NodaTimeSplitter::attempt_splitting("Kr. e. 20.-19. század");
        self::assertEquals($output, [
            0 => "-2000",
            1 => "-1801",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "2000-1801 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1900);

        $output = NodaTimeSplitter::attempt_splitting("Kr. e. 20.-19. század-ig");
        self::assertEquals($output, [
            0 => "?",
            1 => "-1801",
            2 => "00",
            3 => "00",
            4 => "-",
            5 => "",
        ]);
        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Bis 1801 v. Chr.");
        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1801);

    }

    /**
     * Test to check whether the HTML page is correctly generated.
     *
     * @author Joshua Ramon Enslin <joshua@museum-digital.de>
     * @group  ValidOutput
     * @small
     *
     * @return void
     */
    public function testSplitDoesNotWorkWhenItShouldNot():void {

        $output = NodaTimeSplitter::attempt_splitting("");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("1.2.2020-2.2.2020");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("2020 Januar 2-2020 Februar 2");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("2020 Januar-2020 Februar");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("Januar-Februar");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("13.13.2022");
        self::assertEquals($output, []);
        $output = NodaTimeSplitter::attempt_splitting("2022-13-13");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("40.10.2022");
        self::assertEquals($output, []);
        $output = NodaTimeSplitter::attempt_splitting("2022-10-40");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("6;November 1978");
        self::assertEquals($output, []);

        $output = NodaTimeSplitter::attempt_splitting("65497028c51eb");
        self::assertEquals($output, []);
        $output = NodaTimeSplitter::attempt_splitting("6552cf08b0196 test tag");
        self::assertEquals($output, []);

        # $output = NodaTimeSplitter::attempt_splitting("Nach 1944-1964");
        # self::assertEquals($output, []);

    }
}