"failed to load the bootstrap javascript ..." on a unit test

Hello.
I wrote a simple application using the vaadin framework.
It only has a textbox for input and a button to fire an action (get values to the input and display it). It’s a vaadin 7 project in eclipse and it runs on a tomcat 7.
The application works fine, if I call it directly by the url.
Next thing i wanted to realize: a unit test. So I wrote a simple unit-test from a recorded selenium file. But when I start this test, i get the “Failed to load the bootstrap javascript: ./VAADIN/vaadinBootstrap.js” error.

I read there’s maby an error with the web.xml, but i didn’t know which or how to fix it.
Could you help with that without pointing to the vaadin benchtest?

here my sources:
vaadin-ui-class:
package com.example.vaadin_ui_test;

import com.vaadin.annotations.Title;
import com.vaadin.event.ShortcutAction.KeyCode;
import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Label;
import com.vaadin.ui.TextField;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;

@SuppressWarnings(“serial”)
@Title(“Performance Test”)
public class Vaadin_ui_testUI extends UI {

private TextField searchField = new TextField();
private Button searchButton = new Button("Starte Suche");



@Override
protected void init(VaadinRequest request) {
    initLayout();
        }

private void initLayout(){
    final VerticalLayout layout = new VerticalLayout();
    layout.setMargin(true);
    setContent(layout);
    searchField.focus();
    layout.addComponent(searchField);
    
    searchButton.addClickListener(new Button.ClickListener() {
        
        public void buttonClick(ClickEvent event) {
            String id = searchField.getValue();
            String valueToId = "";
            if (id != null && !id.isEmpty()){
                valueToId = getValueToId(id);
                layout.addComponent(new Label("value for your id "+id+" is: "+valueToId));                    
            }
            searchField.setValue("");
            searchField.focus();
            
        }

        private String getValueToId(String id) {
            String returnValue = "";
            
            RDBMS rdbms = new RDBMS();
            if (rdbms.connect()){
                returnValue = rdbms.getTextToPower(id);
                rdbms.disconnect();
            }

            return returnValue;
        }
    });
    searchButton.setClickShortcut(KeyCode.ENTER, null);
    layout.addComponent(searchButton);
}

}

web.xml:

<?xml version="1.0" encoding="UTF-8"?> Vaadin Web Application Vaadin production mode productionMode true Vaadin com.vaadin.server.VaadinServlet Vaadin UI to display UI com.example.vaadin_ui_test.Vaadin_ui_testUI Vaadin /*

unit-test:
package mme;

import static org.junit.Assert.fail;

import java.util.concurrent.TimeUnit;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class SinglePerformanceTest {
private WebDriver driver;
private String baseUrl;
private StringBuffer verificationErrors = new StringBuffer();

@Before
public void setUp() throws Exception {
driver = new FirefoxDriver();
baseUrl = “http://localhost:8080/”;
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
}

@Test
public void testMe() throws Exception {
driver.get(baseUrl + “/vaadin-ui-test/”);
driver.findElement(By.xpath("//input[@type=‘text’]
“)).clear();
driver.findElement(By.xpath(”//input[@type=‘text’]
“)).sendKeys(“123”);
driver.findElement(By.xpath(”//input[@type=‘text’]
“)).clear();
driver.findElement(By.xpath(”//input[@type=‘text’]
“)).sendKeys(“666”);
driver.findElement(By.cssSelector(“span.v-button-caption”)).click();
driver.findElement(By.xpath(”//input[@type=‘text’]
“)).clear();
driver.findElement(By.xpath(”//input[@type=‘text’]
")).sendKeys(“769”);
driver.findElement(By.cssSelector(“span.v-button-caption”)).click();
}

@After
public void tearDown() throws Exception {
driver.quit();
String verificationErrorString = verificationErrors.toString();
if (!“”.equals(verificationErrorString)) {
fail(verificationErrorString);
}
}
}

anybody? any idea?
support? developer?

Did you find a solution?

After working for month our selenium test suddenly start to produce this error from time to time. Although we have serveral tests it’s only one which fails and from build to build it changes which one will fail.