From: Shengjing Zhu <zhsj@debian.org>
Date: Thu, 19 Jan 2023 11:12:56 +0800
Subject: Unwrap errors before checking x509.UnknownAuthorityError

Go1.20 this errors is wrapped as tls.CertificateVerificationError
---
 testing/httpsuite_test.go | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/testing/httpsuite_test.go b/testing/httpsuite_test.go
index c93e723..7e22e52 100644
--- a/testing/httpsuite_test.go
+++ b/testing/httpsuite_test.go
@@ -3,11 +3,10 @@ package testing_test
 import (
 	"crypto/tls"
 	"crypto/x509"
+	"errors"
 	"io/ioutil"
 	gc "launchpad.net/gocheck"
 	"net/http"
-	"net/url"
-	"reflect"
 	"testing"
 
 	jt "github.com/joyent/gocommon/testing"
@@ -53,7 +52,7 @@ func (s *HTTPSTestSuite) TestHelloWorldWithTLS(c *gc.C) {
 	response, err := http.Get(s.Server.URL)
 	// Default http.Get fails because the cert is self-signed
 	c.Assert(err, gc.NotNil)
-	c.Assert(reflect.TypeOf(err.(*url.Error).Err), gc.Equals, reflect.TypeOf(x509.UnknownAuthorityError{}))
+	c.Assert(errors.As(err, &x509.UnknownAuthorityError{}), gc.Equals, true)
 	// Connect again with a Client that doesn't validate the cert
 	insecureClient := &http.Client{Transport: &http.Transport{
 		TLSClientConfig: &tls.Config{InsecureSkipVerify: true}}}