async function collect_and_execute_tests(title, filename) {
  // 1. Collect all tests
  const all_tests = await collect_tests(filename);

  // 2. Execute tests
  describe(title, () => all_tests.forEach(([name, test]) => describe(name, test.default)));
}
Helper function to collect and execute all unit tests, which can be found in files
of the form: `tests/models/<model_type>/test_<filename>_<model_type>.js`.
@param {string} title The title of the test
@param {string} filename The name of the test