Android: Refactor native test setup in a util class.

testing/android/native_test_launcher.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This class sets up the environment for running the native tests inside an
 // android application. It outputs (to a fifo) markers identifying the
 // START/PASSED/CRASH of the test suite, FAILURE/SUCCESS of individual tests,
 // etc.
 // These markers are read by the test runner script to generate test results.
 // It installs signal handlers to detect crashes.
 
 #include <android/log.h>
 #include <signal.h>
-#include <stdarg.h>
-#include <stdio.h>
 
 #include "base/android/base_jni_registrar.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
-#include "base/android/locale_utils.h"
-#include "base/android/path_utils.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/at_exit.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
-#include "base/file_util.h"
 #include "base/logging.h"
-#include "base/string_util.h"
 #include "base/stringprintf.h"
-#include "base/strings/string_tokenizer.h"
 #include "gtest/gtest.h"
+#include "testing/android/native_test_util.h"
 #include "testing/jni/ChromeNativeTestActivity_jni.h"
 
+using testing::NativeTestUtil;
+
 // The main function of the program to be wrapped as a test apk.
 extern int main(int argc, char** argv);
 
 namespace {
 
 // These two command line flags are supported for DumpRenderTree, which needs
 // three fifos rather than a combined one: one for stderr, stdin and stdout.
 const char kSeparateStderrFifo[] = "separate-stderr-fifo";
 const char kCreateStdinFifo[] = "create-stdin-fifo";
 
+// The test runner script writes the command line file in
+// "/data/local/tmp".
+static const char kCommandLineFilePath[] =
+    "/data/local/tmp/chrome-native-tests-command-line";
+
 const char kLogTag[] = "chromium";
 const char kCrashedMarker[] = "[ CRASHED      ]\n";
 
-void AndroidLogError(const char* format, ...) {
-  va_list args;
-  va_start(args, format);
-  __android_log_vprint(ANDROID_LOG_ERROR, kLogTag, format, args);
-  va_end(args);
-}
-
 // The list of signals which are considered to be crashes.
 const int kExceptionSignals[] = {
   SIGSEGV, SIGABRT, SIGFPE, SIGILL, SIGBUS, -1
 };
 
 struct sigaction g_old_sa[NSIG];
 
 // This function runs in a compromised context. It should not allocate memory.
 void SignalHandler(int sig, siginfo_t* info, void* reserved) {
   // Output the crash marker.
   write(STDOUT_FILENO, kCrashedMarker, sizeof(kCrashedMarker));
   g_old_sa[sig].sa_sigaction(sig, info, reserved);
 }
 
 // TODO(nileshagrawal): now that we're using FIFO, test scripts can detect EOF.
 // Remove the signal handlers.
 void InstallHandlers() {
   struct sigaction sa;
   memset(&sa, 0, sizeof(sa));
 
   sa.sa_sigaction = SignalHandler;
   sa.sa_flags = SA_SIGINFO;
 
   for (unsigned int i = 0; kExceptionSignals[i] != -1; ++i) {
     sigaction(kExceptionSignals[i], &sa, &g_old_sa[kExceptionSignals[i]]);
   }
 }
 
-void ParseArgsFromString(const std::string& command_line,
-                         std::vector<std::string>* args) {
-  base::StringTokenizer tokenizer(command_line, kWhitespaceASCII);
-  tokenizer.set_quote_chars("\"");
-  while (tokenizer.GetNext()) {
-    std::string token;
-    RemoveChars(tokenizer.token(), "\"", &token);
-    args->push_back(token);
-  }
-}
-
-void ParseArgsFromCommandLineFile(std::vector<std::string>* args) {
-  // The test runner script writes the command line file in
-  // "/data/local/tmp".
-  static const char kCommandLineFilePath[] =
-      "/data/local/tmp/chrome-native-tests-command-line";
-  FilePath command_line(kCommandLineFilePath);
-  std::string command_line_string;
-  if (file_util::ReadFileToString(command_line, &command_line_string)) {
-    ParseArgsFromString(command_line_string, args);
-  }
-}
-
-int ArgsToArgv(const std::vector<std::string>& args,
-                std::vector<char*>* argv) {
-  // We need to pass in a non-const char**.
-  int argc = args.size();
-
-  argv->resize(argc + 1);
-  for (int i = 0; i < argc; ++i)
-    (*argv)[i] = const_cast<char*>(args[i].c_str());
-  (*argv)[argc] = NULL;  // argv must be NULL terminated.
-
-  return argc;
-}
-
-void CreateFIFO(const char* fifo_path) {
-  unlink(fifo_path);
-  // Default permissions for mkfifo is ignored, chmod is required.
-  if (mkfifo(fifo_path, 0666) || chmod(fifo_path, 0666)) {
-    AndroidLogError("Failed to create fifo %s: %s\n",
-                    fifo_path, strerror(errno));
-    exit(EXIT_FAILURE);
-  }
-}
-
-void Redirect(FILE* stream, const char* path, const char* mode) {
-  if (!freopen(path, mode, stream)) {
-    AndroidLogError("Failed to redirect stream to file: %s: %s\n",
-                    path, strerror(errno));
-    exit(EXIT_FAILURE);
-  }
-}
-
-class ScopedMainEntryLogger {
- public:
-  ScopedMainEntryLogger() {
-    printf(">>ScopedMainEntryLogger\n");
-  }
-
-  ~ScopedMainEntryLogger() {
-    printf("<<ScopedMainEntryLogger\n");
-    fflush(stdout);
-    fflush(stderr);
-  }
-};
-
 }  // namespace
 
 // This method is called on a separate java thread so that we won't trigger
 // an ANR.
 static void RunTests(JNIEnv* env,
                      jobject obj,
                      jstring jfiles_dir,
                      jobject app_context) {
   base::AtExitManager exit_manager;
 
   // Command line initialized basically, will be fully initialized later.
   static const char* const kInitialArgv[] = { "ChromeTestActivity" };
   CommandLine::Init(arraysize(kInitialArgv), kInitialArgv);
 
   // Set the application context in base.
   base::android::ScopedJavaLocalRef<jobject> scoped_context(
       env, env->NewLocalRef(app_context));
   base::android::InitApplicationContext(scoped_context);
   base::android::RegisterJni(env);
 
   std::vector<std::string> args;
-  ParseArgsFromCommandLineFile(&args);
+  NativeTestUtil::ParseArgsFromCommandLineFile(kCommandLineFilePath, &args);
 
-  // We need to pass in a non-const char**.
   std::vector<char*> argv;
-  int argc = ArgsToArgv(args, &argv);
+  int argc = NativeTestUtil::ArgsToArgv(args, &argv);
 
   // Fully initialize command line with arguments.
   CommandLine::ForCurrentProcess()->AppendArguments(
       CommandLine(argc, &argv[0]), false);
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
   FilePath files_dir(base::android::ConvertJavaStringToUTF8(env, jfiles_dir));
 
   // A few options, such "--gtest_list_tests", will just use printf directly
   // Always redirect stdout to a known file.
   FilePath fifo_path(files_dir.Append(FilePath("test.fifo")));
-  CreateFIFO(fifo_path.value().c_str());
+  NativeTestUtil::CreateFIFO(fifo_path.value().c_str());
 
   FilePath stderr_fifo_path, stdin_fifo_path;
 
   // DumpRenderTree needs a separate fifo for the stderr output. For all
   // other tests, insert stderr content to the same fifo we use for stdout.
   if (command_line.HasSwitch(kSeparateStderrFifo)) {
     stderr_fifo_path = files_dir.Append(FilePath("stderr.fifo"));
-    CreateFIFO(stderr_fifo_path.value().c_str());
+    NativeTestUtil::CreateFIFO(stderr_fifo_path.value().c_str());
   }
 
   // DumpRenderTree uses stdin to receive input about which test to run.
   if (command_line.HasSwitch(kCreateStdinFifo)) {
     stdin_fifo_path = files_dir.Append(FilePath("stdin.fifo"));
-    CreateFIFO(stdin_fifo_path.value().c_str());
+    NativeTestUtil::CreateFIFO(stdin_fifo_path.value().c_str());
   }
 
   // Only redirect the streams after all fifos have been created.
-  Redirect(stdout, fifo_path.value().c_str(), "w");
+  NativeTestUtil::RedirectStream(stdout, fifo_path.value().c_str(), "w");
   if (!stdin_fifo_path.empty())
-    Redirect(stdin, stdin_fifo_path.value().c_str(), "r");
+    NativeTestUtil::RedirectStream(stdin, stdin_fifo_path.value().c_str(), "r");
   if (!stderr_fifo_path.empty())
-    Redirect(stderr, stderr_fifo_path.value().c_str(), "w");
+    NativeTestUtil::RedirectStream(
+        stderr, stderr_fifo_path.value().c_str(), "w");
   else
     dup2(STDOUT_FILENO, STDERR_FILENO);
 
   if (command_line.HasSwitch(switches::kWaitForDebugger)) {
     std::string msg = StringPrintf("Native test waiting for GDB because "
                                    "flag %s was supplied",
                                    switches::kWaitForDebugger);
     __android_log_write(ANDROID_LOG_VERBOSE, kLogTag, msg.c_str());
     base::debug::WaitForDebugger(24 * 60 * 60, false);
   }
 
-  ScopedMainEntryLogger scoped_main_entry_logger;
+  NativeTestUtil::ScopedMainEntryLogger scoped_main_entry_logger;
   main(argc, &argv[0]);
 }
 
 // This is called by the VM when the shared library is first loaded.
 JNI_EXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
   // Install signal handlers to detect crashes.
   InstallHandlers();
 
   base::android::InitVM(vm);
   JNIEnv* env = base::android::AttachCurrentThread();
   if (!RegisterNativesImpl(env)) {
     return -1;
   }
 
   return JNI_VERSION_1_4;
 }