package com.vaadin.tests.components.treetable;

import static org.junit.Assert.assertEquals;

import java.io.IOException;
import java.util.List;

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

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

/**
 * Tests expanding TreeTable rows when page length is zero.
 *
 * @author Vaadin Ltd
 */
public class TreeTablePartialUpdatesPageLength0Test extends MultiBrowserTest {

    @Test
    public void testExpanding() throws IOException {
        openTestURL();

        TreeTableElement treeTable = $(TreeTableElement.class).first();
        List<WebElement> rows = treeTable
                .findElement(By.className("v-table-body"))
                .findElements(By.tagName("tr"));
        assertEquals("unexpected row count", 4, rows.size());
        assertEquals("unexpected contents", "root1",
                treeTable.getCell(0, 0).getText());
        assertEquals("unexpected contents", "root2",
                treeTable.getCell(1, 0).getText());
        assertEquals("unexpected contents", "root3",
                treeTable.getCell(2, 0).getText());
        assertEquals("unexpected contents", "END",
                treeTable.getCell(3, 0).getText());

        // expand first row, should have 10 children
        treeTable.getCell(0, 0)
                .findElement(By.className("v-treetable-treespacer")).click();

        treeTable = $(TreeTableElement.class).first();
        rows = treeTable.findElement(By.className("v-table-body"))
                .findElements(By.tagName("tr"));
        assertEquals("unexpected row count", 14, rows.size());

        // expand root3, should have 200 children
        assertEquals("unexpected contents", "root3",
                treeTable.getCell(12, 0).getText());
        treeTable.getCell(12, 0)
                .findElement(By.className("v-treetable-treespacer")).click();

        // expand root2, should have 200 children
        assertEquals("unexpected contents", "root2",
                treeTable.getCell(11, 0).getText());
        treeTable.getCell(11, 0)
                .findElement(By.className("v-treetable-treespacer")).click();

        treeTable = $(TreeTableElement.class).first();
        rows = treeTable.findElement(By.className("v-table-body"))
                .findElements(By.tagName("tr"));
        assertEquals("unexpected row count", 414, rows.size());

        // scroll all the way to the bottom
        WebElement ui = findElement(By.className("v-ui"));
        testBenchElement(ui).scroll(12500);

        compareScreen("bottom");
    }
}