From 3cdddbf033c0066ca2e0b8df2c2fbdbd1c5334f7 Mon Sep 17 00:00:00 2001
From: Ed Page <eopage@gmail.com>
Date: Tue, 7 Nov 2023 20:39:18 -0600
Subject: [PATCH] test(resolver): Improve failure output

---
 crates/resolver-tests/src/lib.rs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/crates/resolver-tests/src/lib.rs b/crates/resolver-tests/src/lib.rs
index 9bdeb8674..71e720b02 100644
--- a/crates/resolver-tests/src/lib.rs
+++ b/crates/resolver-tests/src/lib.rs
@@ -982,14 +982,17 @@ fn meta_test_multiple_versions_strategy() {
 
 /// Assert `xs` contains `elems`
 #[track_caller]
-pub fn assert_contains<A: PartialEq>(xs: &[A], elems: &[A]) {
+pub fn assert_contains<A: PartialEq + std::fmt::Debug>(xs: &[A], elems: &[A]) {
     for elem in elems {
-        assert!(xs.contains(elem));
+        assert!(
+            xs.contains(elem),
+            "missing element\nset: {xs:?}\nmissing: {elem:?}"
+        );
     }
 }
 
 #[track_caller]
-pub fn assert_same<A: PartialEq>(a: &[A], b: &[A]) {
-    assert_eq!(a.len(), b.len());
+pub fn assert_same<A: PartialEq + std::fmt::Debug>(a: &[A], b: &[A]) {
+    assert_eq!(a.len(), b.len(), "not equal\n{a:?}\n{b:?}");
     assert_contains(b, a);
 }