Add CommonArtTest

Add a test framework that does not start up a Runtime object.

Bug: 78651010
Test: make -j 40 test-art-host
Change-Id: I6c8af384af5fe1289c6cf137635e94934ac3795d
diff --git a/runtime/common_runtime_test.cc b/runtime/common_runtime_test.cc
index f6a5efc..f5b15ec 100644
--- a/runtime/common_runtime_test.cc
+++ b/runtime/common_runtime_test.cc
@@ -67,6 +67,7 @@
 
   art::Locks::Init();
   art::InitLogging(argv, art::Runtime::Abort);
+  art::MemMap::Init();
   LOG(INFO) << "Running main() from common_runtime_test.cc...";
   testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
@@ -76,69 +77,6 @@
 
 using android::base::StringPrintf;
 
-ScratchFile::ScratchFile() {
-  // ANDROID_DATA needs to be set
-  CHECK_NE(static_cast<char*>(nullptr), getenv("ANDROID_DATA")) <<
-      "Are you subclassing RuntimeTest?";
-  filename_ = getenv("ANDROID_DATA");
-  filename_ += "/TmpFile-XXXXXX";
-  int fd = mkstemp(&filename_[0]);
-  CHECK_NE(-1, fd) << strerror(errno) << " for " << filename_;
-  file_.reset(new File(fd, GetFilename(), true));
-}
-
-ScratchFile::ScratchFile(const ScratchFile& other, const char* suffix)
-    : ScratchFile(other.GetFilename() + suffix) {}
-
-ScratchFile::ScratchFile(const std::string& filename) : filename_(filename) {
-  int fd = open(filename_.c_str(), O_RDWR | O_CREAT, 0666);
-  CHECK_NE(-1, fd);
-  file_.reset(new File(fd, GetFilename(), true));
-}
-
-ScratchFile::ScratchFile(File* file) {
-  CHECK(file != nullptr);
-  filename_ = file->GetPath();
-  file_.reset(file);
-}
-
-ScratchFile::ScratchFile(ScratchFile&& other) {
-  *this = std::move(other);
-}
-
-ScratchFile& ScratchFile::operator=(ScratchFile&& other) {
-  if (GetFile() != other.GetFile()) {
-    std::swap(filename_, other.filename_);
-    std::swap(file_, other.file_);
-  }
-  return *this;
-}
-
-ScratchFile::~ScratchFile() {
-  Unlink();
-}
-
-int ScratchFile::GetFd() const {
-  return file_->Fd();
-}
-
-void ScratchFile::Close() {
-  if (file_.get() != nullptr) {
-    if (file_->FlushCloseOrErase() != 0) {
-      PLOG(WARNING) << "Error closing scratch file.";
-    }
-  }
-}
-
-void ScratchFile::Unlink() {
-  if (!OS::FileExists(filename_.c_str())) {
-    return;
-  }
-  Close();
-  int unlink_result = unlink(filename_.c_str());
-  CHECK_EQ(0, unlink_result);
-}
-
 static bool unstarted_initialized_ = false;
 
 CommonRuntimeTestImpl::CommonRuntimeTestImpl()
@@ -151,124 +89,6 @@
   runtime_.reset();
 }
 
-void CommonRuntimeTestImpl::SetUpAndroidRoot() {
-  if (IsHost()) {
-    // $ANDROID_ROOT is set on the device, but not necessarily on the host.
-    // But it needs to be set so that icu4c can find its locale data.
-    const char* android_root_from_env = getenv("ANDROID_ROOT");
-    if (android_root_from_env == nullptr) {
-      // Use ANDROID_HOST_OUT for ANDROID_ROOT if it is set.
-      const char* android_host_out = getenv("ANDROID_HOST_OUT");
-      if (android_host_out != nullptr) {
-        setenv("ANDROID_ROOT", android_host_out, 1);
-      } else {
-        // Build it from ANDROID_BUILD_TOP or cwd
-        std::string root;
-        const char* android_build_top = getenv("ANDROID_BUILD_TOP");
-        if (android_build_top != nullptr) {
-          root += android_build_top;
-        } else {
-          // Not set by build server, so default to current directory
-          char* cwd = getcwd(nullptr, 0);
-          setenv("ANDROID_BUILD_TOP", cwd, 1);
-          root += cwd;
-          free(cwd);
-        }
-#if defined(__linux__)
-        root += "/out/host/linux-x86";
-#elif defined(__APPLE__)
-        root += "/out/host/darwin-x86";
-#else
-#error unsupported OS
-#endif
-        setenv("ANDROID_ROOT", root.c_str(), 1);
-      }
-    }
-    setenv("LD_LIBRARY_PATH", ":", 0);  // Required by java.lang.System.<clinit>.
-
-    // Not set by build server, so default
-    if (getenv("ANDROID_HOST_OUT") == nullptr) {
-      setenv("ANDROID_HOST_OUT", getenv("ANDROID_ROOT"), 1);
-    }
-  }
-}
-
-void CommonRuntimeTestImpl::SetUpAndroidData(std::string& android_data) {
-  // On target, Cannot use /mnt/sdcard because it is mounted noexec, so use subdir of dalvik-cache
-  if (IsHost()) {
-    const char* tmpdir = getenv("TMPDIR");
-    if (tmpdir != nullptr && tmpdir[0] != 0) {
-      android_data = tmpdir;
-    } else {
-      android_data = "/tmp";
-    }
-  } else {
-    android_data = "/data/dalvik-cache";
-  }
-  android_data += "/art-data-XXXXXX";
-  if (mkdtemp(&android_data[0]) == nullptr) {
-    PLOG(FATAL) << "mkdtemp(\"" << &android_data[0] << "\") failed";
-  }
-  setenv("ANDROID_DATA", android_data.c_str(), 1);
-}
-
-void CommonRuntimeTestImpl::TearDownAndroidData(const std::string& android_data,
-                                                bool fail_on_error) {
-  if (fail_on_error) {
-    ASSERT_EQ(rmdir(android_data.c_str()), 0);
-  } else {
-    rmdir(android_data.c_str());
-  }
-}
-
-// Helper - find directory with the following format:
-// ${ANDROID_BUILD_TOP}/${subdir1}/${subdir2}-${version}/${subdir3}/bin/
-static std::string GetAndroidToolsDir(const std::string& subdir1,
-                                      const std::string& subdir2,
-                                      const std::string& subdir3) {
-  std::string root;
-  const char* android_build_top = getenv("ANDROID_BUILD_TOP");
-  if (android_build_top != nullptr) {
-    root = android_build_top;
-  } else {
-    // Not set by build server, so default to current directory
-    char* cwd = getcwd(nullptr, 0);
-    setenv("ANDROID_BUILD_TOP", cwd, 1);
-    root = cwd;
-    free(cwd);
-  }
-
-  std::string toolsdir = root + "/" + subdir1;
-  std::string founddir;
-  DIR* dir;
-  if ((dir = opendir(toolsdir.c_str())) != nullptr) {
-    float maxversion = 0;
-    struct dirent* entry;
-    while ((entry = readdir(dir)) != nullptr) {
-      std::string format = subdir2 + "-%f";
-      float version;
-      if (std::sscanf(entry->d_name, format.c_str(), &version) == 1) {
-        if (version > maxversion) {
-          maxversion = version;
-          founddir = toolsdir + "/" + entry->d_name + "/" + subdir3 + "/bin/";
-        }
-      }
-    }
-    closedir(dir);
-  }
-
-  if (founddir.empty()) {
-    ADD_FAILURE() << "Cannot find Android tools directory.";
-  }
-  return founddir;
-}
-
-std::string CommonRuntimeTestImpl::GetAndroidHostToolsDir() {
-  return GetAndroidToolsDir("prebuilts/gcc/linux-x86/host",
-                            "x86_64-linux-glibc2.15",
-                            "x86_64-linux");
-}
-
 std::string CommonRuntimeTestImpl::GetAndroidTargetToolsDir(InstructionSet isa) {
   switch (isa) {
     case InstructionSet::kArm:
@@ -297,38 +117,8 @@
   return "";
 }
 
-std::string CommonRuntimeTestImpl::GetCoreArtLocation() {
-  return GetCoreFileLocation("art");
-}
-
-std::string CommonRuntimeTestImpl::GetCoreOatLocation() {
-  return GetCoreFileLocation("oat");
-}
-
-std::unique_ptr<const DexFile> CommonRuntimeTestImpl::LoadExpectSingleDexFile(
-    const char* location) {
-  std::vector<std::unique_ptr<const DexFile>> dex_files;
-  std::string error_msg;
-  MemMap::Init();
-  static constexpr bool kVerifyChecksum = true;
-  const ArtDexFileLoader dex_file_loader;
-  if (!dex_file_loader.Open(
-        location, location, /* verify */ true, kVerifyChecksum, &error_msg, &dex_files)) {
-    LOG(FATAL) << "Could not open .dex file '" << location << "': " << error_msg << "\n";
-    UNREACHABLE();
-  } else {
-    CHECK_EQ(1U, dex_files.size()) << "Expected only one dex file in " << location;
-    return std::move(dex_files[0]);
-  }
-}
-
 void CommonRuntimeTestImpl::SetUp() {
-  SetUpAndroidRoot();
-  SetUpAndroidData(android_data_);
-  dalvik_cache_.append(android_data_.c_str());
-  dalvik_cache_.append("/dalvik-cache");
-  int mkdir_result = mkdir(dalvik_cache_.c_str(), 0700);
-  ASSERT_EQ(mkdir_result, 0);
+  CommonArtTestImpl::SetUp();
 
   std::string min_heap_string(StringPrintf("-Xms%zdm", gc::Heap::kDefaultInitialSize / MB));
   std::string max_heap_string(StringPrintf("-Xmx%zdm", gc::Heap::kDefaultMaximumSize / MB));
@@ -406,80 +196,13 @@
   runtime_->GetHeap()->SetMinIntervalHomogeneousSpaceCompactionByOom(0U);
 }
 
-void CommonRuntimeTestImpl::ClearDirectory(const char* dirpath, bool recursive) {
-  ASSERT_TRUE(dirpath != nullptr);
-  DIR* dir = opendir(dirpath);
-  ASSERT_TRUE(dir != nullptr);
-  dirent* e;
-  struct stat s;
-  while ((e = readdir(dir)) != nullptr) {
-    if ((strcmp(e->d_name, ".") == 0) || (strcmp(e->d_name, "..") == 0)) {
-      continue;
-    }
-    std::string filename(dirpath);
-    filename.push_back('/');
-    filename.append(e->d_name);
-    int stat_result = lstat(filename.c_str(), &s);
-    ASSERT_EQ(0, stat_result) << "unable to stat " << filename;
-    if (S_ISDIR(s.st_mode)) {
-      if (recursive) {
-        ClearDirectory(filename.c_str());
-        int rmdir_result = rmdir(filename.c_str());
-        ASSERT_EQ(0, rmdir_result) << filename;
-      }
-    } else {
-      int unlink_result = unlink(filename.c_str());
-      ASSERT_EQ(0, unlink_result) << filename;
-    }
-  }
-  closedir(dir);
-}
-
 void CommonRuntimeTestImpl::TearDown() {
-  const char* android_data = getenv("ANDROID_DATA");
-  ASSERT_TRUE(android_data != nullptr);
-  ClearDirectory(dalvik_cache_.c_str());
-  int rmdir_cache_result = rmdir(dalvik_cache_.c_str());
-  ASSERT_EQ(0, rmdir_cache_result);
-  TearDownAndroidData(android_data_, true);
-  dalvik_cache_.clear();
-
+  CommonArtTestImpl::TearDown();
   if (runtime_ != nullptr) {
     runtime_->GetHeap()->VerifyHeap();  // Check for heap corruption after the test
   }
 }
 
-static std::string GetDexFileName(const std::string& jar_prefix, bool host) {
-  std::string path;
-  if (host) {
-    const char* host_dir = getenv("ANDROID_HOST_OUT");
-    CHECK(host_dir != nullptr);
-    path = host_dir;
-  } else {
-    path = GetAndroidRoot();
-  }
-
-  std::string suffix = host
-      ? "-hostdex"                 // The host version.
-      : "-testdex";                // The unstripped target version.
-
-  return StringPrintf("%s/framework/%s%s.jar", path.c_str(), jar_prefix.c_str(), suffix.c_str());
-}
-
-std::vector<std::string> CommonRuntimeTestImpl::GetLibCoreDexFileNames() {
-  return std::vector<std::string>({GetDexFileName("core-oj", IsHost()),
-                                   GetDexFileName("core-libart", IsHost())});
-}
-
-std::string CommonRuntimeTestImpl::GetTestAndroidRoot() {
-  if (IsHost()) {
-    const char* host_dir = getenv("ANDROID_HOST_OUT");
-    CHECK(host_dir != nullptr);
-    return host_dir;
-  }
-  return GetAndroidRoot();
-}
-
 // Check that for target builds we have ART_TARGET_NATIVETEST_DIR set.
 #ifdef ART_TARGET
 #ifndef ART_TARGET_NATIVETEST_DIR
@@ -491,47 +214,6 @@
 #define ART_TARGET_NATIVETEST_DIR_STRING ""
 #endif
 
-std::string CommonRuntimeTestImpl::GetTestDexFileName(const char* name) const {
-  CHECK(name != nullptr);
-  std::string filename;
-  if (IsHost()) {
-    filename += getenv("ANDROID_HOST_OUT");
-    filename += "/framework/";
-  } else {
-    filename += ART_TARGET_NATIVETEST_DIR_STRING;
-  }
-  filename += "art-gtest-";
-  filename += name;
-  filename += ".jar";
-  return filename;
-}
-
-std::vector<std::unique_ptr<const DexFile>> CommonRuntimeTestImpl::OpenTestDexFiles(
-    const char* name) {
-  std::string filename = GetTestDexFileName(name);
-  static constexpr bool kVerifyChecksum = true;
-  std::string error_msg;
-  const ArtDexFileLoader dex_file_loader;
-  std::vector<std::unique_ptr<const DexFile>> dex_files;
-  bool success = dex_file_loader.Open(filename.c_str(),
-                                      filename.c_str(),
-                                      /* verify */ true,
-                                      kVerifyChecksum,
-                                      &error_msg, &dex_files);
-  CHECK(success) << "Failed to open '" << filename << "': " << error_msg;
-  for (auto& dex_file : dex_files) {
-    CHECK_EQ(PROT_READ, dex_file->GetPermissions());
-    CHECK(dex_file->IsReadOnly());
-  }
-  return dex_files;
-}
-
-std::unique_ptr<const DexFile> CommonRuntimeTestImpl::OpenTestDexFile(const char* name) {
-  std::vector<std::unique_ptr<const DexFile>> vector = OpenTestDexFiles(name);
-  EXPECT_EQ(1U, vector.size());
-  return std::move(vector[0]);
-}
-
 std::vector<const DexFile*> CommonRuntimeTestImpl::GetDexFiles(jobject jclass_loader) {
   ScopedObjectAccess soa(Thread::Current());
 
@@ -658,43 +340,6 @@
                                        parent_loader);
 }
 
-std::string CommonRuntimeTestImpl::GetCoreFileLocation(const char* suffix) {
-  CHECK(suffix != nullptr);
-
-  std::string location;
-  if (IsHost()) {
-    const char* host_dir = getenv("ANDROID_HOST_OUT");
-    CHECK(host_dir != nullptr);
-    location = StringPrintf("%s/framework/core.%s", host_dir, suffix);
-  } else {
-    location = StringPrintf("/data/art-test/core.%s", suffix);
-  }
-
-  return location;
-}
-
-std::string CommonRuntimeTestImpl::CreateClassPath(
-    const std::vector<std::unique_ptr<const DexFile>>& dex_files) {
-  CHECK(!dex_files.empty());
-  std::string classpath = dex_files[0]->GetLocation();
-  for (size_t i = 1; i < dex_files.size(); i++) {
-    classpath += ":" + dex_files[i]->GetLocation();
-  }
-  return classpath;
-}
-
-std::string CommonRuntimeTestImpl::CreateClassPathWithChecksums(
-    const std::vector<std::unique_ptr<const DexFile>>& dex_files) {
-  CHECK(!dex_files.empty());
-  std::string classpath = dex_files[0]->GetLocation() + "*" +
-      std::to_string(dex_files[0]->GetLocationChecksum());
-  for (size_t i = 1; i < dex_files.size(); i++) {
-    classpath += ":" + dex_files[i]->GetLocation() + "*" +
-        std::to_string(dex_files[i]->GetLocationChecksum());
-  }
-  return classpath;
-}
-
 void CommonRuntimeTestImpl::FillHeap(Thread* self,
                                      ClassLinker* class_linker,
                                      VariableSizedHandleScope* handle_scope) {