vaadin-framework/uitest/src/main/java/com/vaadin/tests/components/abstractfield/AbstractFieldCommitWithInvalidValues.java

package com.vaadin.tests.components.abstractfield;

import com.vaadin.tests.components.TestBase;
import com.vaadin.ui.Button;
import com.vaadin.ui.Notification;
import com.vaadin.v7.data.util.ObjectProperty;
import com.vaadin.v7.data.validator.StringLengthValidator;
import com.vaadin.v7.ui.TextField;

public class AbstractFieldCommitWithInvalidValues extends TestBase {

    private TextField tf;

    @Override
    protected String getDescription() {
        return "Commiting a field with invalid values should throw an exception";
    }

    @Override
    protected Integer getTicketNumber() {
        return 2532;
    }

    @Override
    protected void setup() {
        tf = new TextField("A field, must contain 1-2 chars",
                new ObjectProperty<>("a"));
        tf.addValidator(
                new StringLengthValidator("Invalid length", 1, 2, false));
        tf.setBuffered(true);
        tf.setRequired(true);

        Button b = new Button("Commit", event -> {
            try {
                tf.commit();
                if (tf.isValid()) {
                    getMainWindow().showNotification(
                            "OK! Form validated and no error was thrown",
                            Notification.TYPE_HUMANIZED_MESSAGE);
                } else {
                    getMainWindow().showNotification(
                            "Form is invalid but no exception was thrown",
                            Notification.TYPE_ERROR_MESSAGE);
                }
            } catch (Exception e) {
                if (tf.isValid()) {
                    getMainWindow().showNotification(
                            "Form is valid but an exception was thrown",
                            Notification.TYPE_ERROR_MESSAGE);
                } else {
                    getMainWindow().showNotification(
                            "OK! Error was thrown for an invalid input",
                            Notification.TYPE_HUMANIZED_MESSAGE);

                }
            }
        });

        addComponent(tf);
        addComponent(b);
    }
}