From 1ec7c85d76814533a8e401f36a51a2448430d9bd Mon Sep 17 00:00:00 2001
From: Grégoire Duchêne <gduchene@awhk.org>
Date: Sat, 10 Dec 2022 14:11:24 +0000
Subject: Add T.AssertErrorAs

---
 testing.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/testing.go b/testing.go
index c8bd66a..2b91a72 100644
--- a/testing.go
+++ b/testing.go
@@ -40,6 +40,16 @@ func (t *T) AssertEqual(exp, actual any) bool {
 	return false
 }
 
+func (t *T) AssertErrorAs(target any, err error) bool {
+	t.Helper()
+
+	if errors.As(err, target) {
+		return true
+	}
+	t.Errorf("\nexpected error chain to contain %#v, got %#v", target, err)
+	return false
+}
+
 func (t *T) AssertErrorIs(target, err error) bool {
 	t.Helper()
 
-- 
cgit v1.2.3-70-g09d2