vaadin-framework/uitest/src/test/java/com/vaadin/tests/components/listselect/ListSelectMultiSelectionTest.java

package com.vaadin.tests.components.listselect;

import static org.junit.Assert.assertEquals;

import java.util.List;

import org.junit.Test;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.support.ui.Select;

import com.vaadin.testbench.By;
import com.vaadin.testbench.elements.ListSelectElement;
import com.vaadin.tests.tb3.MultiBrowserTest;

public class ListSelectMultiSelectionTest extends MultiBrowserTest {

    @Override
    protected Class<?> getUIClass() {
        return ListSelectTestUI.class;
    }

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

        ListSelectElement listSelect = $(ListSelectElement.class).first();
        Select select = new Select(listSelect.getSelectElement());
        List<WebElement> options = listSelect
                .findElements(By.tagName("option"));
        options.get(0).click();

        List<WebElement> selected = select.getAllSelectedOptions();
        assertEquals(1, selected.size());
        assertEquals("Item 0", selected.get(0).getText());

        new Actions(getDriver()).keyDown(Keys.SHIFT).perform();
        options.get(1).click();
        new Actions(getDriver()).keyUp(Keys.SHIFT).perform();

        selected = select.getAllSelectedOptions();
        assertEquals(2, selected.size());
        assertEquals("Item 1", selected.get(1).getText());

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

        // ensure second shift selection added instead of moved
        selected = select.getAllSelectedOptions();
        assertEquals(3, selected.size());
        assertEquals("Item 2", selected.get(2).getText());
        assertEquals("Item 0", selected.get(0).getText());
    }
}