src/profiling/symbolizer/local_symbolizer_unittest.cc - third_party/perfetto - Git at Google

 /*
  * Copyright (C) 2020 The Android Open Source Project
  *
  * 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.
  */

 #include "perfetto/base/build_config.h"
 #include "test/gtest_and_gmock.h"

 // This translation unit is built only on Linux and MacOS. See //gn/BUILD.gn.
 #if PERFETTO_BUILDFLAG(PERFETTO_LOCAL_SYMBOLIZER)

 #include <cstddef>

 #include "src/base/test/tmp_dir_tree.h"
 #include "src/base/test/utils.h"
 #include "src/profiling/symbolizer/elf.h"
 #include "src/profiling/symbolizer/local_symbolizer.h"
 #include "src/profiling/symbolizer/subprocess.h"

 #if PERFETTO_BUILDFLAG(PERFETTO_OS_LINUX) ||   \
     PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) || \
     PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)
 #include <unistd.h>
 #endif

 namespace perfetto {
 namespace profiling {
 namespace {

 void RunAndValidateParseLines(std::string raw_contents) {
   std::istringstream stream(raw_contents);
   auto read_callback = [&stream](char* buffer, size_t size) {
     stream.get(buffer, static_cast<int>(size), '\0');
     return strlen(buffer);
   };
   std::vector<std::string> lines = GetLines(read_callback);
   std::istringstream validation(raw_contents);
   for (const std::string& actual : lines) {
     std::string expected;
     getline(validation, expected);
     EXPECT_EQ(actual, expected);
   }
 }

 TEST(LocalSymbolizerTest, ParseLineWindows) {
   std::string file_name;
   uint32_t lineno;
   ASSERT_TRUE(
       ParseLlvmSymbolizerLine("C:\\Foo\\Bar.cc:123:1", &file_name, &lineno));
   EXPECT_EQ(file_name, "C:\\Foo\\Bar.cc");
   EXPECT_EQ(lineno, 123u);
 }

 TEST(LocalSymbolizerTest, ParseLinesExpectedOutput) {
   std::string raw_contents =
       "FSlateRHIRenderingPolicy::DrawElements(FRHICommandListImmediate&, "
       "FSlateBackBuffer&, TRefCountPtr<FRHITexture2D>&, "
       "TRefCountPtr<FRHITexture2D>&, TRefCountPtr<FRHITexture2D>&, int, "
       "TArray<FSlateRenderBatch, TSizedDefaultAllocator<32> > const&, "
       "FSlateRenderingParams const&)\n"
       "F:/P4/EngineReleaseA/Engine/Source/Runtime/SlateRHIRenderer/"
       "Private\\SlateRHIRenderingPolicy.cpp:1187:19\n";
   RunAndValidateParseLines(raw_contents);
 }

 TEST(LocalSymbolizerTest, ParseLinesErrorOutput) {
   std::string raw_contents =
       "LLVMSymbolizer: error reading file: No such file or directory\n"
       "??\n"
       "??:0:0\n";
   RunAndValidateParseLines(raw_contents);
 }

 TEST(LocalSymbolizerTest, ParseLinesSingleCharRead) {
   std::string raw_contents =
       "FSlateRHIRenderingPolicy::DrawElements(FRHICommandListImmediate&, "
       "FSlateBackBuffer&, TRefCountPtr<FRHITexture2D>&, "
       "TRefCountPtr<FRHITexture2D>&, TRefCountPtr<FRHITexture2D>&, int, "
       "TArray<FSlateRenderBatch, TSizedDefaultAllocator<32> > const&, "
       "FSlateRenderingParams const&)\n"
       "F:/P4/EngineReleaseA/Engine/Source/Runtime/SlateRHIRenderer/"
       "Private\\SlateRHIRenderingPolicy.cpp:1187:19\n";
   std::istringstream stream(raw_contents);
   auto read_callback = [&stream](char* buffer, size_t) {
     stream.get(buffer, 1, '\0');
     return strlen(buffer);
   };
   std::vector<std::string> lines = GetLines(read_callback);
   std::istringstream validation(raw_contents);
   for (const std::string& actual : lines) {
     std::string expected;
     getline(validation, expected);
     EXPECT_EQ(actual, expected);
   }
 }

 // Creates a very simple ELF file content with the first 20 bytes of `build_id`
 // as build id (if build id is shorter the remainin bytes are zero).
 std::string CreateElfWithBuildId(const std::string& build_id) {
   struct SimpleElf {
     Elf64::Ehdr ehdr;
     Elf64::Shdr shdr;
     Elf64::Nhdr nhdr;
     char note_name[4];
     char note_desc[20];
   } e;
   memset(&e, 0, sizeof e);

   e.ehdr.e_ident[EI_MAG0] = ELFMAG0;
   e.ehdr.e_ident[EI_MAG1] = ELFMAG1;
   e.ehdr.e_ident[EI_MAG2] = ELFMAG2;
   e.ehdr.e_ident[EI_MAG3] = ELFMAG3;
   e.ehdr.e_ident[EI_CLASS] = ELFCLASS64;
   e.ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
   e.ehdr.e_ident[EI_VERSION] = EV_CURRENT;
   e.ehdr.e_version = EV_CURRENT;
   e.ehdr.e_shentsize = sizeof(Elf64::Shdr);
   e.ehdr.e_shnum = 1;
   e.ehdr.e_ehsize = sizeof e.ehdr;
   e.ehdr.e_shoff = offsetof(SimpleElf, shdr);

   e.shdr.sh_type = SHT_NOTE;
   e.shdr.sh_offset = offsetof(SimpleElf, nhdr);

   e.nhdr.n_type = NT_GNU_BUILD_ID;
   e.nhdr.n_namesz = sizeof e.note_name;
   e.nhdr.n_descsz = sizeof e.note_desc;
   strcpy(e.note_name, "GNU");
   memcpy(e.note_desc, build_id.c_str(),
          std::min(build_id.size(), sizeof(e.note_desc)));

   e.shdr.sh_size = offsetof(SimpleElf, note_desc) + sizeof(e.note_desc) -
                    offsetof(SimpleElf, nhdr);

   return std::string(reinterpret_cast<const char*>(&e), sizeof e);
 }

 #if defined(MEMORY_SANITIZER)
 // fts_read() causes some error under msan.
 #define NOMSAN_SimpleTree DISABLED_SimpleTree
 #else
 #define NOMSAN_SimpleTree SimpleTree
 #endif
 TEST(LocalBinaryIndexerTest, NOMSAN_SimpleTree) {
   base::TmpDirTree tmp;
   tmp.AddDir("dir1");
   tmp.AddFile("dir1/elf1", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));
   tmp.AddFile("dir1/nonelf1", "OTHERDATA");
   tmp.AddDir("dir2");
   tmp.AddFile("dir2/elf1", CreateElfWithBuildId("BBBBBBBBBBBBBBBBBBBB"));
   tmp.AddFile("dir2/nonelf1", "other text");

   LocalBinaryIndexer indexer({tmp.path() + "/dir1", tmp.path() + "/dir2"});

   base::Optional<FoundBinary> bin1 =
       indexer.FindBinary("", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
 #if PERFETTO_BUILDFLAG(PERFETTO_OS_WIN)
   EXPECT_EQ(bin1.value().file_name, tmp.path() + "/dir1\\elf1");
 #else
   EXPECT_EQ(bin1.value().file_name, tmp.path() + "/dir1/elf1");
 #endif
   base::Optional<FoundBinary> bin2 =
       indexer.FindBinary("", "BBBBBBBBBBBBBBBBBBBB");
   ASSERT_TRUE(bin2.has_value());
 #if PERFETTO_BUILDFLAG(PERFETTO_OS_WIN)
   EXPECT_EQ(bin2.value().file_name, tmp.path() + "/dir2\\elf1");
 #else
   EXPECT_EQ(bin2.value().file_name, tmp.path() + "/dir2/elf1");
 #endif
 }

 #if PERFETTO_BUILDFLAG(PERFETTO_OS_LINUX) ||   \
     PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) || \
     PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)

 #if defined(MEMORY_SANITIZER)
 // fts_read() causes some error under msan.
 #define NOMSAN_Symlinks DISABLED_Symlinks
 #else
 #define NOMSAN_Symlinks Symlinks
 #endif
 TEST(LocalBinaryIndexerTest, NOMSAN_Symlinks) {
   base::TmpDirTree tmp;
   tmp.AddDir("real");
   tmp.AddFile("real/elf1", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));
   tmp.AddDir("real/dir1");
   tmp.AddFile("real/dir1/elf2", CreateElfWithBuildId("BBBBBBBBBBBBBBBBBBBB"));
   tmp.AddFile("real/dir1/elf3", CreateElfWithBuildId("CCCCCCCCCCCCCCCCCCCC"));
   tmp.AddDir("sym");
   symlink(tmp.AbsolutePath("real/elf1").c_str(),
           tmp.AbsolutePath("sym/elf1").c_str());
   tmp.TrackFile("sym/elf1");
   symlink(tmp.AbsolutePath("real/dir1").c_str(),
           tmp.AbsolutePath("sym/dir1").c_str());
   tmp.TrackFile("sym/dir1");

   LocalBinaryIndexer indexer({tmp.AbsolutePath("sym")});

   base::Optional<FoundBinary> bin1 =
       indexer.FindBinary("", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
   EXPECT_EQ(bin1.value().file_name, tmp.AbsolutePath("sym/elf1"));

   base::Optional<FoundBinary> bin2 =
       indexer.FindBinary("", "BBBBBBBBBBBBBBBBBBBB");
   ASSERT_TRUE(bin2.has_value());
   EXPECT_EQ(bin2.value().file_name, tmp.AbsolutePath("sym/dir1/elf2"));

   base::Optional<FoundBinary> bin3 =
       indexer.FindBinary("", "CCCCCCCCCCCCCCCCCCCC");
   ASSERT_TRUE(bin3.has_value());
   EXPECT_EQ(bin3.value().file_name, tmp.AbsolutePath("sym/dir1/elf3"));
 }

 #if defined(MEMORY_SANITIZER)
 // fts_read() causes some error under msan.
 #define NOMSAN_RecursiveSymlinks DISABLED_RecursiveSymlinks
 #else
 #define NOMSAN_RecursiveSymlinks RecursiveSymlinks
 #endif
 TEST(LocalBinaryIndexerTest, NOMSAN_RecursiveSymlinks) {
   base::TmpDirTree tmp;
   tmp.AddDir("main");
   tmp.AddFile("main/elf1", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));
   tmp.AddDir("main/dir1");
   symlink(tmp.AbsolutePath("main").c_str(),
           tmp.AbsolutePath("main/dir1/sym").c_str());
   tmp.TrackFile("main/dir1/sym");

   LocalBinaryIndexer indexer({tmp.AbsolutePath("main")});

   base::Optional<FoundBinary> bin1 =
       indexer.FindBinary("", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
   EXPECT_EQ(bin1.value().file_name, tmp.AbsolutePath("main/elf1"));
 }

 #endif  // PERFETTO_BUILDFLAG(PERFETTO_OS_LINUX) ||
         // PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) ||
         // PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)

 TEST(LocalBinaryFinderTest, AbsolutePath) {
   base::TmpDirTree tmp;
   tmp.AddDir("root");
   tmp.AddDir("root/dir");
   tmp.AddFile("root/dir/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

   LocalBinaryFinder finder({tmp.path() + "/root"});

   base::Optional<FoundBinary> bin1 =
       finder.FindBinary("/dir/elf1.so", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
   EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/dir/elf1.so");
 }

 TEST(LocalBinaryFinderTest, AbsolutePathWithoutBaseApk) {
   base::TmpDirTree tmp;
   tmp.AddDir("root");
   tmp.AddDir("root/dir");
   tmp.AddFile("root/dir/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

   LocalBinaryFinder finder({tmp.path() + "/root"});

   base::Optional<FoundBinary> bin1 =
       finder.FindBinary("/dir/base.apk!elf1.so", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
   EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/dir/elf1.so");
 }

 TEST(LocalBinaryFinderTest, OnlyFilename) {
   base::TmpDirTree tmp;
   tmp.AddDir("root");
   tmp.AddFile("root/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

   LocalBinaryFinder finder({tmp.path() + "/root"});

   base::Optional<FoundBinary> bin1 =
       finder.FindBinary("/ignored_dir/elf1.so", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
   EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/elf1.so");
 }

 TEST(LocalBinaryFinderTest, OnlyFilenameWithoutBaseApk) {
   base::TmpDirTree tmp;
   tmp.AddDir("root");
   tmp.AddFile("root/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

   LocalBinaryFinder finder({tmp.path() + "/root"});

   base::Optional<FoundBinary> bin1 = finder.FindBinary(
       "/ignored_dir/base.apk!elf1.so", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
   EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/elf1.so");
 }

 TEST(LocalBinaryFinderTest, BuildIdSubdir) {
   base::TmpDirTree tmp;
   tmp.AddDir("root");
   tmp.AddDir("root/.build-id");
   tmp.AddDir("root/.build-id/41");
   tmp.AddFile("root/.build-id/41/41414141414141414141414141414141414141.debug",
               CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

   LocalBinaryFinder finder({tmp.path() + "/root"});

   base::Optional<FoundBinary> bin1 =
       finder.FindBinary("/ignored_dir/ignored_name.so", "AAAAAAAAAAAAAAAAAAAA");
   ASSERT_TRUE(bin1.has_value());
   EXPECT_EQ(
       bin1.value().file_name,
       tmp.path() +
           "/root/.build-id/41/41414141414141414141414141414141414141.debug");
 }

 }  // namespace
 }  // namespace profiling
 }  // namespace perfetto

 #endif
	/*
	* Copyright (C) 2020 The Android Open Source Project
	*
	* 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.
	*/

	#include "perfetto/base/build_config.h"
	#include "test/gtest_and_gmock.h"

	// This translation unit is built only on Linux and MacOS. See //gn/BUILD.gn.
	#if PERFETTO_BUILDFLAG(PERFETTO_LOCAL_SYMBOLIZER)

	#include <cstddef>

	#include "src/base/test/tmp_dir_tree.h"
	#include "src/base/test/utils.h"
	#include "src/profiling/symbolizer/elf.h"
	#include "src/profiling/symbolizer/local_symbolizer.h"
	#include "src/profiling/symbolizer/subprocess.h"

	#if PERFETTO_BUILDFLAG(PERFETTO_OS_LINUX) \|\| \
	PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) \|\| \
	PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)
	#include <unistd.h>
	#endif

	namespace perfetto {
	namespace profiling {
	namespace {

	void RunAndValidateParseLines(std::string raw_contents) {
	std::istringstream stream(raw_contents);
	auto read_callback = [&stream](char* buffer, size_t size) {
	stream.get(buffer, static_cast<int>(size), '\0');
	return strlen(buffer);
	};
	std::vector<std::string> lines = GetLines(read_callback);
	std::istringstream validation(raw_contents);
	for (const std::string& actual : lines) {
	std::string expected;
	getline(validation, expected);
	EXPECT_EQ(actual, expected);
	}
	}

	TEST(LocalSymbolizerTest, ParseLineWindows) {
	std::string file_name;
	uint32_t lineno;
	ASSERT_TRUE(
	ParseLlvmSymbolizerLine("C:\\Foo\\Bar.cc:123:1", &file_name, &lineno));
	EXPECT_EQ(file_name, "C:\\Foo\\Bar.cc");
	EXPECT_EQ(lineno, 123u);
	}

	TEST(LocalSymbolizerTest, ParseLinesExpectedOutput) {
	std::string raw_contents =
	"FSlateRHIRenderingPolicy::DrawElements(FRHICommandListImmediate&, "
	"FSlateBackBuffer&, TRefCountPtr<FRHITexture2D>&, "
	"TRefCountPtr<FRHITexture2D>&, TRefCountPtr<FRHITexture2D>&, int, "
	"TArray<FSlateRenderBatch, TSizedDefaultAllocator<32> > const&, "
	"FSlateRenderingParams const&)\n"
	"F:/P4/EngineReleaseA/Engine/Source/Runtime/SlateRHIRenderer/"
	"Private\\SlateRHIRenderingPolicy.cpp:1187:19\n";
	RunAndValidateParseLines(raw_contents);
	}

	TEST(LocalSymbolizerTest, ParseLinesErrorOutput) {
	std::string raw_contents =
	"LLVMSymbolizer: error reading file: No such file or directory\n"
	"??\n"
	"??:0:0\n";
	RunAndValidateParseLines(raw_contents);
	}

	TEST(LocalSymbolizerTest, ParseLinesSingleCharRead) {
	std::string raw_contents =
	"FSlateRHIRenderingPolicy::DrawElements(FRHICommandListImmediate&, "
	"FSlateBackBuffer&, TRefCountPtr<FRHITexture2D>&, "
	"TRefCountPtr<FRHITexture2D>&, TRefCountPtr<FRHITexture2D>&, int, "
	"TArray<FSlateRenderBatch, TSizedDefaultAllocator<32> > const&, "
	"FSlateRenderingParams const&)\n"
	"F:/P4/EngineReleaseA/Engine/Source/Runtime/SlateRHIRenderer/"
	"Private\\SlateRHIRenderingPolicy.cpp:1187:19\n";
	std::istringstream stream(raw_contents);
	auto read_callback = [&stream](char* buffer, size_t) {
	stream.get(buffer, 1, '\0');
	return strlen(buffer);
	};
	std::vector<std::string> lines = GetLines(read_callback);
	std::istringstream validation(raw_contents);
	for (const std::string& actual : lines) {
	std::string expected;
	getline(validation, expected);
	EXPECT_EQ(actual, expected);
	}
	}

	// Creates a very simple ELF file content with the first 20 bytes of `build_id`
	// as build id (if build id is shorter the remainin bytes are zero).
	std::string CreateElfWithBuildId(const std::string& build_id) {
	struct SimpleElf {
	Elf64::Ehdr ehdr;
	Elf64::Shdr shdr;
	Elf64::Nhdr nhdr;
	char note_name[4];
	char note_desc[20];
	} e;
	memset(&e, 0, sizeof e);

	e.ehdr.e_ident[EI_MAG0] = ELFMAG0;
	e.ehdr.e_ident[EI_MAG1] = ELFMAG1;
	e.ehdr.e_ident[EI_MAG2] = ELFMAG2;
	e.ehdr.e_ident[EI_MAG3] = ELFMAG3;
	e.ehdr.e_ident[EI_CLASS] = ELFCLASS64;
	e.ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
	e.ehdr.e_ident[EI_VERSION] = EV_CURRENT;
	e.ehdr.e_version = EV_CURRENT;
	e.ehdr.e_shentsize = sizeof(Elf64::Shdr);
	e.ehdr.e_shnum = 1;
	e.ehdr.e_ehsize = sizeof e.ehdr;
	e.ehdr.e_shoff = offsetof(SimpleElf, shdr);

	e.shdr.sh_type = SHT_NOTE;
	e.shdr.sh_offset = offsetof(SimpleElf, nhdr);

	e.nhdr.n_type = NT_GNU_BUILD_ID;
	e.nhdr.n_namesz = sizeof e.note_name;
	e.nhdr.n_descsz = sizeof e.note_desc;
	strcpy(e.note_name, "GNU");
	memcpy(e.note_desc, build_id.c_str(),
	std::min(build_id.size(), sizeof(e.note_desc)));

	e.shdr.sh_size = offsetof(SimpleElf, note_desc) + sizeof(e.note_desc) -
	offsetof(SimpleElf, nhdr);

	return std::string(reinterpret_cast<const char*>(&e), sizeof e);
	}

	#if defined(MEMORY_SANITIZER)
	// fts_read() causes some error under msan.
	#define NOMSAN_SimpleTree DISABLED_SimpleTree
	#else
	#define NOMSAN_SimpleTree SimpleTree
	#endif
	TEST(LocalBinaryIndexerTest, NOMSAN_SimpleTree) {
	base::TmpDirTree tmp;
	tmp.AddDir("dir1");
	tmp.AddFile("dir1/elf1", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));
	tmp.AddFile("dir1/nonelf1", "OTHERDATA");
	tmp.AddDir("dir2");
	tmp.AddFile("dir2/elf1", CreateElfWithBuildId("BBBBBBBBBBBBBBBBBBBB"));
	tmp.AddFile("dir2/nonelf1", "other text");

	LocalBinaryIndexer indexer({tmp.path() + "/dir1", tmp.path() + "/dir2"});

	base::Optional<FoundBinary> bin1 =
	indexer.FindBinary("", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	#if PERFETTO_BUILDFLAG(PERFETTO_OS_WIN)
	EXPECT_EQ(bin1.value().file_name, tmp.path() + "/dir1\\elf1");
	#else
	EXPECT_EQ(bin1.value().file_name, tmp.path() + "/dir1/elf1");
	#endif
	base::Optional<FoundBinary> bin2 =
	indexer.FindBinary("", "BBBBBBBBBBBBBBBBBBBB");
	ASSERT_TRUE(bin2.has_value());
	#if PERFETTO_BUILDFLAG(PERFETTO_OS_WIN)
	EXPECT_EQ(bin2.value().file_name, tmp.path() + "/dir2\\elf1");
	#else
	EXPECT_EQ(bin2.value().file_name, tmp.path() + "/dir2/elf1");
	#endif
	}

	#if PERFETTO_BUILDFLAG(PERFETTO_OS_LINUX) \|\| \
	PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) \|\| \
	PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)

	#if defined(MEMORY_SANITIZER)
	// fts_read() causes some error under msan.
	#define NOMSAN_Symlinks DISABLED_Symlinks
	#else
	#define NOMSAN_Symlinks Symlinks
	#endif
	TEST(LocalBinaryIndexerTest, NOMSAN_Symlinks) {
	base::TmpDirTree tmp;
	tmp.AddDir("real");
	tmp.AddFile("real/elf1", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));
	tmp.AddDir("real/dir1");
	tmp.AddFile("real/dir1/elf2", CreateElfWithBuildId("BBBBBBBBBBBBBBBBBBBB"));
	tmp.AddFile("real/dir1/elf3", CreateElfWithBuildId("CCCCCCCCCCCCCCCCCCCC"));
	tmp.AddDir("sym");
	symlink(tmp.AbsolutePath("real/elf1").c_str(),
	tmp.AbsolutePath("sym/elf1").c_str());
	tmp.TrackFile("sym/elf1");
	symlink(tmp.AbsolutePath("real/dir1").c_str(),
	tmp.AbsolutePath("sym/dir1").c_str());
	tmp.TrackFile("sym/dir1");

	LocalBinaryIndexer indexer({tmp.AbsolutePath("sym")});

	base::Optional<FoundBinary> bin1 =
	indexer.FindBinary("", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	EXPECT_EQ(bin1.value().file_name, tmp.AbsolutePath("sym/elf1"));

	base::Optional<FoundBinary> bin2 =
	indexer.FindBinary("", "BBBBBBBBBBBBBBBBBBBB");
	ASSERT_TRUE(bin2.has_value());
	EXPECT_EQ(bin2.value().file_name, tmp.AbsolutePath("sym/dir1/elf2"));

	base::Optional<FoundBinary> bin3 =
	indexer.FindBinary("", "CCCCCCCCCCCCCCCCCCCC");
	ASSERT_TRUE(bin3.has_value());
	EXPECT_EQ(bin3.value().file_name, tmp.AbsolutePath("sym/dir1/elf3"));
	}

	#if defined(MEMORY_SANITIZER)
	// fts_read() causes some error under msan.
	#define NOMSAN_RecursiveSymlinks DISABLED_RecursiveSymlinks
	#else
	#define NOMSAN_RecursiveSymlinks RecursiveSymlinks
	#endif
	TEST(LocalBinaryIndexerTest, NOMSAN_RecursiveSymlinks) {
	base::TmpDirTree tmp;
	tmp.AddDir("main");
	tmp.AddFile("main/elf1", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));
	tmp.AddDir("main/dir1");
	symlink(tmp.AbsolutePath("main").c_str(),
	tmp.AbsolutePath("main/dir1/sym").c_str());
	tmp.TrackFile("main/dir1/sym");

	LocalBinaryIndexer indexer({tmp.AbsolutePath("main")});

	base::Optional<FoundBinary> bin1 =
	indexer.FindBinary("", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	EXPECT_EQ(bin1.value().file_name, tmp.AbsolutePath("main/elf1"));
	}

	#endif // PERFETTO_BUILDFLAG(PERFETTO_OS_LINUX) \|\|
	// PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) \|\|
	// PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)

	TEST(LocalBinaryFinderTest, AbsolutePath) {
	base::TmpDirTree tmp;
	tmp.AddDir("root");
	tmp.AddDir("root/dir");
	tmp.AddFile("root/dir/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

	LocalBinaryFinder finder({tmp.path() + "/root"});

	base::Optional<FoundBinary> bin1 =
	finder.FindBinary("/dir/elf1.so", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/dir/elf1.so");
	}

	TEST(LocalBinaryFinderTest, AbsolutePathWithoutBaseApk) {
	base::TmpDirTree tmp;
	tmp.AddDir("root");
	tmp.AddDir("root/dir");
	tmp.AddFile("root/dir/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

	LocalBinaryFinder finder({tmp.path() + "/root"});

	base::Optional<FoundBinary> bin1 =
	finder.FindBinary("/dir/base.apk!elf1.so", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/dir/elf1.so");
	}

	TEST(LocalBinaryFinderTest, OnlyFilename) {
	base::TmpDirTree tmp;
	tmp.AddDir("root");
	tmp.AddFile("root/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

	LocalBinaryFinder finder({tmp.path() + "/root"});

	base::Optional<FoundBinary> bin1 =
	finder.FindBinary("/ignored_dir/elf1.so", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/elf1.so");
	}

	TEST(LocalBinaryFinderTest, OnlyFilenameWithoutBaseApk) {
	base::TmpDirTree tmp;
	tmp.AddDir("root");
	tmp.AddFile("root/elf1.so", CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

	LocalBinaryFinder finder({tmp.path() + "/root"});

	base::Optional<FoundBinary> bin1 = finder.FindBinary(
	"/ignored_dir/base.apk!elf1.so", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	EXPECT_EQ(bin1.value().file_name, tmp.path() + "/root/elf1.so");
	}

	TEST(LocalBinaryFinderTest, BuildIdSubdir) {
	base::TmpDirTree tmp;
	tmp.AddDir("root");
	tmp.AddDir("root/.build-id");
	tmp.AddDir("root/.build-id/41");
	tmp.AddFile("root/.build-id/41/41414141414141414141414141414141414141.debug",
	CreateElfWithBuildId("AAAAAAAAAAAAAAAAAAAA"));

	LocalBinaryFinder finder({tmp.path() + "/root"});

	base::Optional<FoundBinary> bin1 =
	finder.FindBinary("/ignored_dir/ignored_name.so", "AAAAAAAAAAAAAAAAAAAA");
	ASSERT_TRUE(bin1.has_value());
	EXPECT_EQ(
	bin1.value().file_name,
	tmp.path() +
	"/root/.build-id/41/41414141414141414141414141414141414141.debug");
	}

	} // namespace
	} // namespace profiling
	} // namespace perfetto

	#endif