Add match test for hashicorp and go 1.20 multi errors

internal/errors/match_test.go

@@ -8,6 +8,7 @@ import (
 	stderrors "errors"
 	"testing"
 
+	"github.com/hashicorp/go-multierror"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -281,6 +282,36 @@ func TestMatch(t *testing.T) {
 			),
 			want: true,
 		},
+		{
+			name:     "match on go multi error",
+			template: T(errInvalidFieldMask),
+			err:      stderrors.Join(stdErr, errInvalidFieldMask),
+			want:     true,
+		},
+		{
+			name:     "match on go multi error for specific code",
+			template: T(InvalidFieldMask),
+			err:      stderrors.Join(stdErr, errInvalidFieldMask),
+			want:     true,
+		},
+		{
+			name:     "match on go multi error both boundary errors",
+			template: T(errInvalidFieldMask),
+			err:      stderrors.Join(errNotUnique, errInvalidFieldMask),
+			want:     true,
+		},
+		{
+			name:     "match on hashicorp multi error",
+			template: T(errInvalidFieldMask),
+			err:      multierror.Append(stdErr, errInvalidFieldMask),
+			want:     true,
+		},
+		{
+			name:     "match on hashicorp multi error for specific code",
+			template: T(InvalidFieldMask),
+			err:      multierror.Append(stdErr, errInvalidFieldMask),
+			want:     true,
+		},
 		{
 			name:     "no match on Wrapped only stderror",
 			template: T(stderrors.New("no match")),