Function AssertExists

cpp/src/arrow/util/io_util_test.cc:61–65

namespace internal {

void AssertExists(const PlatformFilename& path) {
  bool exists = false;
  ASSERT_OK_AND_ASSIGN(exists, FileExists(path));
  ASSERT_TRUE(exists) << "Path '" << path.ToString() << "' doesn't exist";
}

void AssertNotExists(const PlatformFilename& path) {
  bool exists = true;