Create test cases on the fly

Helper

function runTestcase(description, teststeps) {
  try {
    UIALogger.logStart(description);
    teststeps();
    UIALogger.logPass("Testcase passed");
  } catch (exception) {
    UIALogger.logError(exception.message);
    target.logElementTree();
    UIALogger.logFail("Testcase failed");
    throw exception;
  }
}

Example

var target = UIATarget.localTarget();
var app = target.frontMostApp();
var window = app.mainWindow();

runTestcase("Press register button", function() {
  var expected = "register button";
  var register_btn = window.buttons()["Register"];
  if (!register_btn.isValid()) {
    throw new Error("not found: '" + expected + "'");
  } else {
    register_btn.tap();
  }
});