feat: port media/test (#1116)

Rewrite test_data_util.cc to locate files relative to the source file
itself, rather than using a service from chromium `base::`.

Issue #1047 (CMake porting)
Issue #346 (absl porting)

packager/CMakeLists.txt

@@ -41,6 +41,7 @@ endif()
 # Subdirectories with their own CMakeLists.txt, all of whose targets are built.
 add_subdirectory(file)
 add_subdirectory(kv_pairs)
+add_subdirectory(media)
 add_subdirectory(status)
 add_subdirectory(third_party)
 add_subdirectory(tools)

packager/media/CMakeLists.txt

@@ -0,0 +1,8 @@
+# Copyright 2022 Google LLC. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+# Subdirectories with their own CMakeLists.txt, all of whose targets are built.
+add_subdirectory(test)

packager/media/test/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright 2022 Google LLC. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+add_library(test_data_util STATIC
+    test_data_util.cc)
+target_link_libraries(test_data_util glog)

packager/media/test/media_test.gyp

@@ -1,35 +0,0 @@
-# Copyright 2014 Google LLC. All rights reserved.
-#
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file or at
-# https://developers.google.com/open-source/licenses/bsd
-
-{
-  'variables': {
-    'shaka_code': 1,
-  },
-  'targets': [
-    {
-      'target_name': 'run_tests_with_atexit_manager',
-      'type': '<(component)',
-      'sources': [
-        'run_tests_with_atexit_manager.cc',
-      ],
-      'dependencies': [
-        '../../testing/gtest.gyp:gtest',
-      ],
-    },
-    {
-      'target_name': 'media_test_support',
-      'type': '<(component)',
-      'sources': [
-        'test_data_util.cc',
-        'test_data_util.h',
-      ],
-      'dependencies': [
-        '../../base/base.gyp:base',
-        'run_tests_with_atexit_manager',
-      ],
-    },
-  ],
-}

packager/media/test/run_tests_with_atexit_manager.cc

@@ -1,29 +0,0 @@
-// Copyright 2014 Google LLC. All rights reserved.
-//
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file or at
-// https://developers.google.com/open-source/licenses/bsd
-
-#include <gtest/gtest.h>
-
-#include "packager/base/at_exit.h"
-#include "packager/base/command_line.h"
-#include "packager/base/files/file_path.h"
-#include "packager/base/logging.h"
-#include "packager/base/path_service.h"
-
-int main(int argc, char **argv) {
-  base::AtExitManager exit;
-
-  // Needed to enable VLOG/DVLOG through --vmodule or --v.
-  base::CommandLine::Init(argc, argv);
-
-  // Set up logging.
-  logging::LoggingSettings log_settings;
-  log_settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
-  CHECK(logging::InitLogging(log_settings));
-
-  ::testing::InitGoogleTest(&argc, argv);
-
-  return RUN_ALL_TESTS();
-}

packager/media/test/test_data_util.cc

@@ -4,41 +4,41 @@
 
 #include "packager/media/test/test_data_util.h"
 
-#include "packager/base/files/file_util.h"
-#include "packager/base/logging.h"
-#include "packager/base/path_service.h"
+#include "glog/logging.h"
 
 namespace shaka {
 namespace media {
 
-base::FilePath GetTestDataFilePath(const std::string& name) {
-  base::FilePath file_path;
-  CHECK(PathService::Get(base::DIR_SOURCE_ROOT, &file_path));
-
-  file_path = file_path.Append(FILE_PATH_LITERAL("packager"))
-                  .Append(FILE_PATH_LITERAL("media"))
-                  .Append(FILE_PATH_LITERAL("test"))
-                  .Append(FILE_PATH_LITERAL("data"))
-                  .AppendASCII(name);
-  return file_path;
+// Returns a file path for a file in the media/test/data directory.
+std::filesystem::path GetTestDataFilePath(const std::string& name) {
+  std::filesystem::path header_path(__FILE__);
+  return header_path.parent_path() / "data" / name;
 }
 
-base::FilePath GetAppTestDataFilePath(const std::string& name) {
-  base::FilePath file_path;
-  CHECK(PathService::Get(base::DIR_SOURCE_ROOT, &file_path));
-
-  file_path = file_path.Append(FILE_PATH_LITERAL("packager"))
-                  .Append(FILE_PATH_LITERAL("app"))
-                  .Append(FILE_PATH_LITERAL("test"))
-                  .Append(FILE_PATH_LITERAL("testdata"))
-                  .AppendASCII(name);
-  return file_path;
+// Returns a file path for a file in the media/app/test/testdata directory.
+std::filesystem::path GetAppTestDataFilePath(const std::string& name) {
+  std::filesystem::path header_path(__FILE__);
+  return header_path.parent_path().parent_path() / "app" / "test" / "testdata" /
+         name;
 }
 
+// Reads a test file from media/test/data directory and returns its content.
 std::vector<uint8_t> ReadTestDataFile(const std::string& name) {
-  std::string buffer;
-  CHECK(base::ReadFileToString(GetTestDataFilePath(name), &buffer));
-  return std::vector<uint8_t>(buffer.begin(), buffer.end());
+  std::filesystem::path path = GetTestDataFilePath(name);
+
+  FILE* f = fopen(path.string().c_str(), "rb");
+  if (!f) {
+    LOG(FATAL) << "Failed to read test data from " << path;
+    return std::vector<uint8_t>();
+  }
+
+  std::vector<uint8_t> data;
+  data.resize(std::filesystem::file_size(path));
+  size_t size = fread(data.data(), 1, data.size(), f);
+  data.resize(size);
+  fclose(f);
+
+  return data;
 }
 
 }  // namespace media

packager/media/test/test_data_util.h

@@ -7,18 +7,18 @@
 
 #include <stdint.h>
 
+#include <filesystem>
 #include <string>
-
-#include "packager/base/files/file_path.h"
+#include <vector>
 
 namespace shaka {
 namespace media {
 
 // Returns a file path for a file in the media/test/data directory.
-base::FilePath GetTestDataFilePath(const std::string& name);
+std::filesystem::path GetTestDataFilePath(const std::string& name);
 
 // Returns a file path for a file in the media/app/test/testdata directory.
-base::FilePath GetAppTestDataFilePath(const std::string& name);
+std::filesystem::path GetAppTestDataFilePath(const std::string& name);
 
 // Reads a test file from media/test/data directory and returns its content.
 std::vector<uint8_t> ReadTestDataFile(const std::string& name);