public void to_date_time()
{
Assert.Throws <ArgumentNullException>(() => StringExtensions.ToDateTime(null));
Assert.Throws <ArgumentException>(() => string.Empty.ToDateTime());
const string Invalid = "invalid";
var date = DateTime.UtcNow;
Assert.Throws <FormatException>(() => Invalid.ToDateTime());
DateTime result;
Assert.True(date.ToString().ToDateTime(out result));
Assert.True(result.IsSameDate(date));
Assert.True(result.IsSameTime(date));
Assert.False(Invalid.ToDateTime(out result));
Assert.Equal(default(DateTime), result);
}
