Adjust DateTime::now() by adding DateTimeError

src/datetime.rs

@@ -8,10 +8,38 @@ use {
     },
     std::{
         cmp, fmt,
+        num::TryFromIntError,
         time::{SystemTime, SystemTimeError, UNIX_EPOCH},
     },
 };
 
+#[derive(Debug)]
+pub enum Error {
+    System(SystemTimeError),
+    RangeError,
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::System(e) => write!(f, "{e}"),
+            Self::RangeError => write!(f, "self:?"),
+        }
+    }
+}
+
+impl From<SystemTimeError> for Error {
+    fn from(value: SystemTimeError) -> Self {
+        Self::System(value)
+    }
+}
+
+impl From<TryFromIntError> for Error {
+    fn from(_value: TryFromIntError) -> Self {
+        Self::RangeError
+    }
+}
+
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
 pub struct DateTime {
@@ -154,9 +182,9 @@ impl DateTime {
 
     #[allow(clippy::missing_panics_doc)]
     /// Creates a `DateTime` from the system time
-    pub fn now() -> Result<Self, SystemTimeError> {
+    pub fn now() -> Result<Self, Error> {
         let now = SystemTime::now().duration_since(UNIX_EPOCH)?;
-        Ok(Self::from_timestamp(i64::try_from(now.as_secs()).unwrap()))
+        Ok(Self::from_timestamp(i64::try_from(now.as_secs())?))
     }
 
     #[allow(clippy::missing_panics_doc)]

src/lib.rs

@@ -9,6 +9,7 @@ pub(crate) mod zone;
 
 pub mod prelude;
 pub use datetime::DateTime;
+pub use datetime::Error as DateTimeError;
 
 pub static SECONDS_PER_MINUTE: i64 = 60;
 pub static SECONDS_PER_HOUR: i64 = 60 * 60;