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diff --git a/extern/draco/dracoenc/src/draco/core/draco_test_utils.h b/extern/draco/dracoenc/src/draco/core/draco_test_utils.h
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+// Copyright 2016 The Draco Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef DRACO_CORE_DRACO_TEST_UTILS_H_
+#define DRACO_CORE_DRACO_TEST_UTILS_H_
+
+#include "draco/core/draco_test_base.h"
+#include "draco/io/mesh_io.h"
+#include "draco/io/point_cloud_io.h"
+
+namespace draco {
+
+// Returns the full path to a given file system entry, such as test file or test
+// directory.
+std::string GetTestFileFullPath(const std::string &entry_name);
+
+// Returns the full path to a given temporary file (a location where tests store
+// generated files).
+std::string GetTestTempFileFullPath(const std::string &file_name);
+
+// Generates a new golden file and saves it into the correct folder.
+// Returns false if the file couldn't be created.
+bool GenerateGoldenFile(const std::string &golden_file_name, const void *data,
+                        int data_size);
+
+// Compare a golden file content with the input data.
+// Function will log the first byte position where the data differ.
+// Returns false if there are any differences.
+bool CompareGoldenFile(const std::string &golden_file_name, const void *data,
+                       int data_size);
+
+// Loads a mesh / point cloud specified by a |file_name| that is going to be
+// automatically converted to the correct path available to the testing
+// instance.
+inline std::unique_ptr<Mesh> ReadMeshFromTestFile(
+    const std::string &file_name) {
+  const std::string path = GetTestFileFullPath(file_name);
+  return ReadMeshFromFile(path).value();
+}
+inline std::unique_ptr<Mesh> ReadMeshFromTestFile(const std::string &file_name,
+                                                  bool use_metadata) {
+  const std::string path = GetTestFileFullPath(file_name);
+  return ReadMeshFromFile(path, use_metadata).value();
+}
+
+inline std::unique_ptr<PointCloud> ReadPointCloudFromTestFile(
+    const std::string &file_name) {
+  const std::string path = GetTestFileFullPath(file_name);
+  return ReadPointCloudFromFile(path).value();
+}
+
+}  // namespace draco
+
+#endif  // DRACO_CORE_DRACO_TEST_UTILS_H_