in auth/testapp/src/common_main.cc [313:321]
void CompleteTest(const char* test_name, int min_token_changes,
int max_token_changes) {
const bool success = min_token_changes <= num_token_changes_ &&
num_token_changes_ <= max_token_changes;
LogMessage("%sIdTokenListener called %d time%s on %s.",
success ? "" : "ERROR: ", num_token_changes_,
num_token_changes_ == 1 ? "" : "s", test_name);
num_token_changes_ = 0;
}