public void ConvertBackToString()
{
//arrange
string s = "Mplus(appdate, 6)-14";
DiaryDate date = new DiaryDate(s);
//act
string result = date.ToFileString();
//assert
Assert.AreEqual("MPLUS(appdate,6)-14", result);
}
public void ConvertBackToStringwithBonding()
{
//arrange
string s = "Str2Date('14/'+copy(mplusstr((appdate),1),4,7))";
DiaryDate date = new DiaryDate(s);
//act
string result = date.ToFileString();
//assert
Assert.AreEqual("Str2Date('14/'+copy(mplusstr((appdate),1),4,7))", result);
}