Function corruptFile

bolt/common/caching/tests/AsyncDataCacheTest.cpp:759–764

Cuts off the last 1/10th of file at 'path'.

namespace {
// Cuts off the last 1/10th of file at 'path'.
void corruptFile(const std::string& path) {
  const auto fd = ::open(path.c_str(), O_WRONLY);
  const auto size = ::lseek(fd, 0, SEEK_END);
  const auto rc = ftruncate(fd, size / 10 * 9);
  ASSERT_EQ(rc, 0);
}
} // namespace

TEST_F(AsyncDataCacheTest, DISABLED_ssd) {