Function assertThrows

deps/v8/test/intl/assert.js:157–177

* Runs code() and asserts that it throws the specified exception.

(code, type_opt, cause_opt)

 * Runs code() and asserts that it throws the specified exception.
 */
function assertThrows(code, type_opt, cause_opt) {
  try {
    if (typeof code == 'function') {
      code();
    } else {
      eval(code);
    }
  } catch (e) {
    if (typeof type_opt == 'function') {
      assertInstanceof(e, type_opt);
    }
    if (arguments.length >= 3) {
      assertEquals(cause_opt, e.message, 'thrown exception type mismatch');
    }
    // Success.
    return;
  }
  var expected = arguments.length >= 3 ? cause_opt :
      typeof type_opt == 'function' ? type_opt : 'any exception';
  fail(expected, 'no exception', 'expected thrown exception');
}


/**