public void TestIncrementDateByOneDayAndThatIncrementChangesTheMonth()
{
StringDate date = new StringDate(31, 1, 2017);
date.nextDay();
Assert.AreEqual("01022017", date.getDate());
}
public void TestIncrementDateByOneDayAndThatIncrementChangesTheYear()
{
StringDate date = new StringDate(31, 12, 2015);
date.nextDay();
Assert.AreEqual("01012016", date.getDate());
}
public void TestIncrementDateByOneDay()
{
StringDate date = new StringDate(1, 1, 2017);
date.nextDay();
Assert.AreEqual("02012017", date.getDate());
}