change assert library with cmp library

Author: atoato88

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/go-git/go-git/v5 v5.1.0
 	github.com/go-logr/logr v0.3.0
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
+	github.com/google/go-cmp v0.5.2
 	github.com/prometheus/client_golang v1.7.1
 	github.com/stretchr/testify v1.6.1
 	golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0

pkg/patterns/declarative/sort_test.go

@@ -20,7 +20,9 @@ import (
 	"context"
 	"testing"
 
-	"github.com/stretchr/testify/assert"
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"sigs.k8s.io/kubebuilder-declarative-pattern/pkg/patterns/declarative/pkg/manifest"
 )
@@ -222,7 +224,9 @@ func Test_Sort(t *testing.T) {
 		t.Run(tc.name, func(t *testing.T) {
 			ctx := context.Background()
 			tc.input.Sort(DefaultObjectOrder(ctx))
-			assert.Equal(t, tc.expected, tc.input)
+			if diff := cmp.Diff(tc.expected, tc.input, cmpopts.IgnoreUnexported(manifest.Object{})); diff != "" {
+				t.Errorf("sort result mismatch (-want +got):\n%s", diff)
+			}
 		})
 	}