/*
 * Copyright 2000-2016 Vaadin Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.vaadin.tests.components.listselect;

import java.util.List;

import org.junit.Assert;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.interactions.Actions;

import com.vaadin.testbench.elements.ListSelectElement;
import com.vaadin.tests.tb3.SingleBrowserTest;

public class ListSelectNoDomRebuildTest extends SingleBrowserTest {
    @Override
    protected Class<?> getUIClass() {
        return ListSelects.class;
    }

    @Test
    public void testNoDomRebuild() {
        openTestURL();

        // Testbench doesn't seem to support sending key events to the right
        // location, so we will just verify that the DOM is not rebuilt
        selectMenuPath("Component", "Selection", "Multi select");
        selectMenuPath("Component", "Listeners", "Value change listener");

        ListSelectElement list = $(ListSelectElement.class).first();
        List<WebElement> options = list.findElements(By.tagName("option"));

        assertNotStale(options);

        options.get(4).click();

        assertNotStale(options);

        new Actions(driver).keyDown(Keys.SHIFT).perform();
        options.get(2).click();
        options.get(6).click();
        new Actions(driver).keyUp(Keys.SHIFT).perform();

        assertNotStale(options);
    }

    private void assertNotStale(List<WebElement> options) {
        for (WebElement element : options) {
            // We really don't expect the text to be null, mainly doing this
            // since getText() will throw if the element is detached.
            Assert.assertNotNull(element.getText());
        }
    }

}