vaadin-framework/uitest/src/test/java/com/vaadin/tests/components/ui/ComponentMissingFromDefaultWidgetsetTest.java

package com.vaadin.tests.components.ui;

import static org.junit.Assert.assertTrue;

import org.junit.Test;
import org.openqa.selenium.WebElement;

import com.vaadin.tests.tb3.SingleBrowserTest;

/**
 * Test for testing if a component is missing from a widgetset.
 *
 * @author Vaadin Ltd
 */
public class ComponentMissingFromDefaultWidgetsetTest
        extends SingleBrowserTest {

    @Test
    public void testComponentInTestingWidgetset() {
        openTestURL();
        WebElement component = vaadinElementById("missing-component");
        assertTrue(component.getText().startsWith(
                "Widgetset 'com.vaadin.DefaultWidgetSet' does not contain an implementation for com.vaadin.tests.widgetset.server.MissingFromDefaultWidgetsetComponent."));

    }
}