From ebdd2c031865250b60b6745dd38736ffec7bfffe Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Mon, 19 Oct 2020 18:25:16 -0400
Subject: [PATCH] Test new error type from caret

---
 caret/src/lib.rs       |  2 +-
 caret/tests/example.rs | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/caret/src/lib.rs b/caret/src/lib.rs
index 57318696c..ed2f203b4 100644
--- a/caret/src/lib.rs
+++ b/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.
diff --git a/caret/tests/example.rs b/caret/tests/example.rs
index 4dad87e55..de3b5db4b 100644
--- a/caret/tests/example.rs
+++ b/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"
+    );
 }