WebRTC: Replace ProjectRootPath by ResourcePath

BUG=webrtc:6727
NOTRY=True

Review-Url: https://codereview.webrtc.org/2513363004
Cr-Commit-Position: refs/heads/master@{#15201}

Author: ehlemur-zz

data/voice_engine/audio_long16.pcm

@@ -138,7 +138,6 @@ if (rtc_include_tests) {
   }
 
   modules_unittests_resources = [
-    "//data/voice_engine/audio_tiny48.wav",
     "//resources/att-downlink.rx",
     "//resources/att-uplink.rx",
     "//resources/audio_coding/neteq_opus.rtp",
@@ -238,6 +237,7 @@ if (rtc_include_tests) {
     "//resources/verizon3g-uplink.rx",
     "//resources/verizon4g-downlink.rx",
     "//resources/verizon4g-uplink.rx",
+    "//resources/voice_engine/audio_tiny48.wav",
   ]
 
   if (is_ios) {

data/voice_engine/audio_tiny48.wav

@@ -37,8 +37,8 @@ class MediaFileTest : public testing::Test {
 TEST_F(MediaFileTest, MAYBE_StartPlayingAudioFileWithoutError) {
   // TODO(leozwang): Use hard coded filename here, we want to
   // loop through all audio files in future
-  const std::string audio_file = webrtc::test::ProjectRootPath() +
-      "data/voice_engine/audio_tiny48.wav";
+  const std::string audio_file =
+      webrtc::test::ResourcePath("voice_engine/audio_tiny48", "wav");
   ASSERT_EQ(0, media_file_->StartPlayingAudioFile(
       audio_file.c_str(),
       0,

webrtc/modules/BUILD.gn

@@ -10,57 +10,6 @@
 
 #include <stdio.h>
 
-// File utilities for testing purposes.
-//
-// The ProjectRootPath() method is a convenient way of getting an absolute
-// path to the project source tree root directory. Using this, it is easy to
-// refer to test resource files in a portable way.
-//
-// Notice that even if Windows platforms use backslash as path delimiter, it is
-// also supported to use slash, so there's no need for #ifdef checks in test
-// code for setting up the paths to the resource files.
-//
-// Example use:
-// Assume we have the following code being used in a test source file:
-// const std::string kInputFile = webrtc::test::ProjectRootPath() +
-//     "test/data/voice_engine/audio_long16.wav";
-// // Use the kInputFile for the tests...
-//
-// Then here's some example outputs for different platforms:
-// Linux:
-// * Source tree located in /home/user/webrtc/trunk
-// * Test project located in /home/user/webrtc/trunk/src/testproject
-// * Test binary compiled as:
-//   /home/user/webrtc/trunk/out/Debug/testproject_unittests
-// Then ProjectRootPath() will return /home/user/webrtc/trunk/ no matter if
-// the test binary is executed from standing in either of:
-// /home/user/webrtc/trunk
-// or
-// /home/user/webrtc/trunk/out/Debug
-// (or any other directory below the trunk for that matter).
-//
-// Windows:
-// * Source tree located in C:\Users\user\webrtc\trunk
-// * Test project located in C:\Users\user\webrtc\trunk\src\testproject
-// * Test binary compiled as:
-//   C:\Users\user\webrtc\trunk\src\testproject\Debug\testproject_unittests.exe
-// Then ProjectRootPath() will return C:\Users\user\webrtc\trunk\ when the
-// test binary is executed from inside Visual Studio.
-// It will also return the same path if the test is executed from a command
-// prompt standing in C:\Users\user\webrtc\trunk\src\testproject\Debug
-//
-// Mac:
-// * Source tree located in /Users/user/webrtc/trunk
-// * Test project located in /Users/user/webrtc/trunk/src/testproject
-// * Test binary compiled as:
-//   /Users/user/webrtc/trunk/xcodebuild/Debug/testproject_unittests
-// Then ProjectRootPath() will return /Users/user/webrtc/trunk/ no matter if
-// the test binary is executed from standing in either of:
-// /Users/user/webrtc/trunk
-// or
-// /Users/user/webrtc/trunk/out/Debug
-// (or any other directory below the trunk for that matter).
-
 #ifndef WEBRTC_TEST_TESTSUPPORT_FILEUTILS_H_
 #define WEBRTC_TEST_TESTSUPPORT_FILEUTILS_H_
 
@@ -73,32 +22,14 @@ namespace test {
 // to find the project root.
 extern const char* kCannotFindProjectRootDir;
 
-// Finds the root dir of the project, to be able to set correct paths to
-// resource files used by tests.
-// For desktop, we assume that the project root is two levels above (i.e. the
-// current working directory + /../../)
-// For Android, it is assumed to be /sdcard/chromium_tests_root/
-// For iOS, the resource files are assumed to be included in the test's .app
-// bundle.
-// If the current working directory is above the project root dir, it will not
-// be found.
-//
-// If symbolic links occur in the path they will be resolved and the actual
-// directory will be returned.
-//
-// Returns the absolute path to the project root dir (usually the trunk dir)
-// WITH a trailing path delimiter.
-// If the project root is not found, the string specified by
-// kCannotFindProjectRootDir is returned.
-std::string ProjectRootPath();
-
 // Creates and returns the absolute path to the output directory where log files
 // and other test artifacts should be put. The output directory is generally a
 // directory named "out" at the top-level of the project, i.e. a subfolder to
 // the path returned by ProjectRootPath(). The exception is Android where we use
 // /sdcard/ instead.
 //
-// Details described for ProjectRootPath() apply here too.
+// If symbolic links occur in the path they will be resolved and the actual
+// directory will be returned.
 //
 // Returns the path WITH a trailing path delimiter. If the project root is not
 // found, the current working directory ("./") is returned as a fallback.

webrtc/modules/media_file/media_file_unittest.cc

@@ -54,17 +54,10 @@ class FileUtilsTest : public testing::Test {
 
 std::string FileUtilsTest::original_working_dir_ = "";
 
-// Tests that the project root path is returned for the default working
+// Tests that the project output dir path is returned for the default working
 // directory that is automatically set when the test executable is launched.
 // The test is not fully testing the implementation, since we cannot be sure
 // of where the executable was launched from.
-TEST_F(FileUtilsTest, ProjectRootPath) {
-  std::string project_root = webrtc::test::ProjectRootPath();
-  // Not very smart, but at least tests something.
-  ASSERT_GT(project_root.length(), 0u);
-}
-
-// Similar to the above test, but for the output dir
 #if defined(WEBRTC_ANDROID)
 #define MAYBE_OutputPathFromUnchangedWorkingDir \
   DISABLED_OutputPathFromUnchangedWorkingDir

webrtc/test/testsupport/fileutils.h

@@ -293,7 +293,6 @@ if (rtc_include_tests) {
         "test/auto_test/fixtures/before_initialization_fixture.h",
         "test/auto_test/fixtures/before_streaming_fixture.cc",
         "test/auto_test/fixtures/before_streaming_fixture.h",
-        "test/auto_test/resource_manager.cc",
         "test/auto_test/standard/audio_processing_test.cc",
         "test/auto_test/standard/codec_before_streaming_test.cc",
         "test/auto_test/standard/codec_test.cc",

webrtc/test/testsupport/fileutils_unittest.cc

@@ -8,15 +8,16 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/voice_engine/test/auto_test/fixtures/before_streaming_fixture.h"
 
 BeforeStreamingFixture::BeforeStreamingFixture()
     : channel_(voe_base_->CreateChannel()),
       transport_(NULL) {
   EXPECT_GE(channel_, 0);
 
-  fake_microphone_input_file_ = resource_manager_.long_audio_file_path();
-  EXPECT_FALSE(fake_microphone_input_file_.empty());
+  fake_microphone_input_file_ =
+      webrtc::test::ResourcePath("voice_engine/audio_long16", "pcm");
 
   SetUpLocalPlayback();
   RestartFakeMicrophone();

webrtc/voice_engine/BUILD.gn

@@ -13,7 +13,6 @@
 
 #include <string>
 #include "webrtc/voice_engine/test/auto_test/fixtures/after_initialization_fixture.h"
-#include "webrtc/voice_engine/test/auto_test/resource_manager.h"
 
 // This fixture will, in addition to the work done by its superclasses,
 // create a channel and prepare playing a file through the fake microphone
@@ -26,7 +25,6 @@ class BeforeStreamingFixture : public AfterInitializationFixture {
 
  protected:
   int             channel_;
-  ResourceManager resource_manager_;
   std::string     fake_microphone_input_file_;
 
   // Shuts off the fake microphone for this test.

webrtc/voice_engine/test/auto_test/fixtures/before_streaming_fixture.cc

@@ -15,12 +15,12 @@
 #include <string>
 
 #include "gflags/gflags.h"
+#include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/voice_engine/include/voe_audio_processing.h"
 #include "webrtc/voice_engine/include/voe_base.h"
 #include "webrtc/voice_engine/include/voe_errors.h"
 #include "webrtc/voice_engine/include/voe_file.h"
 #include "webrtc/voice_engine/include/voe_rtp_rtcp.h"
-#include "webrtc/voice_engine/test/auto_test/resource_manager.h"
 #include "webrtc/voice_engine/test/auto_test/voe_test_common.h"
 #include "webrtc/voice_engine/test/auto_test/voe_test_interface.h"
 #ifdef WEBRTC_VOICE_ENGINE_CODEC_API
@@ -118,10 +118,8 @@ class VoETestManager {
   int ReleaseInterfaces();
 
   const char* AudioFilename() const {
-    const std::string& result = resource_manager_.long_audio_file_path();
-    if (result.length() == 0) {
-      TEST_LOG("ERROR: Failed to open input file!");
-    }
+    const std::string& result =
+        webrtc::test::ResourcePath("voice_engine/audio_long16", "pcm");
     return result.c_str();
   }
 
@@ -187,8 +185,6 @@ class VoETestManager {
   VoEVideoSync*          voe_vsync_;
   VoEVolumeControl*      voe_volume_control_;
   VoEAudioProcessing*    voe_apm_;
-
-  ResourceManager        resource_manager_;
 };
 
 }  // namespace voetest

webrtc/voice_engine/test/auto_test/fixtures/before_streaming_fixture.h

@@ -229,20 +229,8 @@ void RunTest(std::string out_path) {
   bool experimental_ns_enabled = false;
   bool debug_recording_started = false;
 
-#if defined(WEBRTC_ANDROID)
-  std::string resource_path = "/sdcard/";
-#else
-  std::string resource_path = webrtc::test::ProjectRootPath();
-  if (resource_path == webrtc::test::kCannotFindProjectRootDir) {
-    printf("*** Unable to get project root directory. "
-           "File playing may fail. ***\n");
-    // Fall back to the current directory.
-    resource_path = "./";
-  } else {
-    resource_path += "data/voice_engine/";
-  }
-#endif
-  const std::string audio_filename = resource_path + "audio_long16.pcm";
+  const std::string audio_filename =
+      webrtc::test::ResourcePath("voice_engine/audio_long16", "pcm");
 
   const std::string play_filename = out_path + "recorded_playout.pcm";
   const std::string mic_filename = out_path + "recorded_mic.pcm";