avoid lint issue

pkg/registry/apis/datasource/hardcoded/testdata_test.go

@@ -0,0 +1,24 @@
+package hardcoded
+
+import (
+	"encoding/json"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	// "sigs.k8s.io/yaml" // uses the same structure as json!
+)
+
+func TestSpec(t *testing.T) {
+	info, err := TestdataOpenAPIExtension()
+	require.NoError(t, err)
+	require.NotNil(t, info)
+
+	jj, err := json.MarshalIndent(info, "", "  ")
+	require.NoError(t, err)
+	fmt.Printf("%s\n", string(jj))
+
+	// jj, err = yaml.Marshal(info)
+	// require.NoError(t, err)
+	// fmt.Printf("%s\n", string(jj))
+}