AssertionsEnabledTest.java

package com.vaadin.tests.widgetset.server;

import org.junit.Assert;
import org.junit.Test;

import com.vaadin.testbench.By;
import com.vaadin.testbench.elements.NotificationElement;
import com.vaadin.tests.tb3.SingleBrowserTest;

public class AssertionsEnabledTest extends SingleBrowserTest {

    private static final String FAILING_CLASSNAME = "non-existent-widget";

    @Test
    public void testAssertionsAreEnabled() {
        setDebug(true);
        openTestURL();

        // If assertions are disabled, the AssertionFailureWidget will add a
        // label to the UI.
        Assert.assertFalse(
                "Label with classname " + FAILING_CLASSNAME
                        + " should not exist",
                isElementPresent(By.className(FAILING_CLASSNAME)));

        Assert.assertTrue("Assertion error Notification is not present",
                isElementPresent(NotificationElement.class));
    }

}