Merge "power: fix TryDifferentGovernors test" into rvc-dev

#include <cutils/properties.h>

#include <android-base/file.h>

#include <android-base/strings.h>

#include <android-base/unique_fd.h>

#include <android/hardware/power/1.0/IPower.h>

#include <gtest/gtest.h>

TEST_P(PowerHidlTest, TryDifferentGovernors) {

  Return<void> ret;

  unique_fd fd1(open(CPU_GOVERNOR_PATH, O_RDWR));

  unique_fd fd2(open(AVAILABLE_GOVERNORS_PATH, O_RDONLY));

  if (fd1 < 0 || fd2 < 0) {

  std::string old_governor, governors;

  if (!android::base::ReadFileToString(CPU_GOVERNOR_PATH, &old_governor) ||

      !android::base::ReadFileToString(AVAILABLE_GOVERNORS_PATH, &governors)) {

    // Files don't exist, so skip the rest of the test case

    SUCCEED();

    return;

  }

  char old_governor[80];

  ASSERT_LE(0, read(fd1, old_governor, 80));

  char governors[1024];

  unsigned len = read(fd2, governors, 1024);

  ASSERT_LE(0u, len);

  governors[len] = '\0';

  char *saveptr;

  char *name = strtok_r(governors, " \n", &saveptr);

  while (name) {

    ASSERT_LE(0, write(fd1, name, strlen(name)));

  auto all_governors = android::base::Split(governors, " \n");

  for (const auto &governor : all_governors) {

      ASSERT_TRUE(android::base::WriteStringToFile(governor, CPU_GOVERNOR_PATH));

    ret = power->setInteractive(true);

    ASSERT_TRUE(ret.isOk());

    power->powerHint(PowerHint::LAUNCH, 1);

    power->powerHint(PowerHint::LAUNCH, 0);

    name = strtok_r(NULL, " \n", &saveptr);

  }

  ASSERT_LE(0, write(fd1, old_governor, strlen(old_governor)));

  ASSERT_TRUE(android::base::WriteStringToFile(old_governor, CPU_GOVERNOR_PATH));

}

// Sanity check Power::powerHint on good and bad inputs.