Function BoolFromGTestEnv

test/common/gtest/gtest.cpp:9802–9807

Reads and returns the Boolean environment variable corresponding to the given flag; if it's not set, returns default_value. The value is considered true iff it's not "0".

//
// The value is considered true iff it's not "0".
bool BoolFromGTestEnv(const char* flag, bool default_value) {
  const std::string env_var = FlagToEnvVar(flag);
  const char* const string_value = posix::GetEnv(env_var.c_str());
  return string_value == NULL ?
      default_value : strcmp(string_value, "0") != 0;
}

// Reads and returns a 32-bit integer stored in the environment
// variable corresponding to the given flag; if it isn't set or