Test new error type from caret

caret/src/lib.rs

@@ -219,7 +219,7 @@ macro_rules! caret_enum {
 
 /// An error produced from type derived from type.  These errors can
 /// only occur when trying to convert to a type made with caret_enum!
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Error {
     /// Tried to convert to an enumeration type from an integer that
     /// didn't represent a member of that enumeration.

caret/tests/example.rs

@@ -1,4 +1,4 @@
-use caret::caret_enum;
+use caret::{caret_enum, Error};
 use std::convert::TryInto;
 
 caret_enum! {
@@ -28,6 +28,12 @@ fn test_int_ops() {
     assert_eq!(Demo::from_int(2), None);
     let t: Result<Demo, _> = 6.try_into();
     assert!(t.is_err());
+    let err = t.unwrap_err();
+    assert_eq!(err, Error::InvalidInteger);
+    assert_eq!(
+        format!("{}", err),
+        "Integer was not member of this enumeration"
+    );
 }
 
 #[test]
@@ -47,4 +53,10 @@ fn test_str_ops() {
     assert_eq!(t, Demo::Dee);
     let t: Result<Demo, _> = "Foo".parse();
     assert!(t.is_err());
+    let err = t.unwrap_err();
+    assert_eq!(err, Error::InvalidString);
+    assert_eq!(
+        format!("{}", err),
+        "String was not member of this enumeration"
+    );
 }