StefMa @Medium - Developers, please write tests!

MyClock.java

public class MyClock {

    public String getCurrentTime(TimeFormat format) {
        switch (format) {
            case GERMAN:
                return "14:45 Uhr";
            case AMERICAN:
                return "2:45 PM";
            case GERMAN_WITH_DATE:
                return "14:45 Uhr, Freitag 12.02.2016";
            case AMERICAN_WITH_DATE:
                return "2:45 PM, Friday 02.12.2016";
            default:
                return "";
        }
    }

}

MyClockTest.java

public class MyClockTest {

    private MyClock mMyClock;

    @Before
    public void setUp() throws Exception {
        mMyClock = new MyClock();
    }

    @Test
    public void testGetCurrentName_ShouldReturnTimeInGermanFormat() throws Exception {
        String germanTime = mMyClock.getCurrentTime(TimeFormat.GERMAN);

        assertThat(germanTime, is(equalTo("14:45 Uhr")));
    }

    @Test
    public void testGetCurrentName_ShouldReturnTimeInAmericanFormat() throws Exception {
        String americanTime = mMyClock.getCurrentTime(TimeFormat.AMERICAN);

        assertThat(americanTime, is(equalTo("2:45 PM")));
    }

    @Test
    public void testGetCurrentName_ShouldReturnTimeInGermanFormatWithDate() throws Exception {
        String americanTime = mMyClock.getCurrentTime(TimeFormat.GERMAN_WITH_DATE);

        assertThat(americanTime, is(equalTo("14:45 Uhr, Freitag 12.02.2016")));
    }

    @Test
    public void testGetCurrentName_ShouldReturnTimeInAmericanFormatWithDate() throws Exception {
        String americanTime = mMyClock.getCurrentTime(TimeFormat.AMERICAN_WITH_DATE);

        assertThat(americanTime, is(equalTo("2:45 PM, Friday 02.12.2016")));
    }
    
}

TimeFormat.java

public enum TimeFormat {
    GERMAN, AMERICAN, GERMAN_WITH_DATE, AMERICAN_WITH_DATE
}