ClickableElementTest

/*
 * Copyright (c) 2002-2025 Gargoyle Software Inc.
 *
 * 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
 * https://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 org.htmlunit.html;

import java.util.ArrayList;
import java.util.List;

import org.htmlunit.CollectingAlertHandler;
import org.htmlunit.MockWebConnection;
import org.htmlunit.SimpleWebTestCase;
import org.htmlunit.WebClient;
import org.htmlunit.junit.BrowserRunner;
import org.htmlunit.junit.annotation.Alerts;
import org.htmlunit.junit.annotation.BuggyWebDriver;
import org.junit.Test;
import org.junit.runner.RunWith;

/**
 * Tests for various clickable elements.
 *
 * @author David K. Taylor
 * @author Chris Erskine
 * @author Marc Guillemot
 * @author Ahmed Ashour
 * @author Frank Danek
 */
@RunWith(BrowserRunner.class)
public class ClickableElementTest extends SimpleWebTestCase {

    /**
     * Full page driver for onClick tests.
     *
     * @param htmlContent HTML fragment for body of page with clickable element
     *        identified by clickId ID attribute. Must have onClick that raises
     *        an alert of "foo".
     * @throws Exception if the test fails
     */
    private void onClickPageTest(final String htmlContent) throws Exception {
        setExpectedAlerts("foo");
        onClickPageTest(htmlContent, 1);
    }

    /**
     * Full page driver for onClick tests.
     *
     * @param htmlContent HTML fragment for body of page with clickable element
     *        identified by clickId ID attribute.
     * @param numClicks number of times to click element
     * @param expectedAlerts array of expected popup values
     * @throws Exception if the test fails
     */
    private void onClickPageTest(final String htmlContent, final int numClicks) throws Exception {
        onClickPageTest(htmlContent, numClicks, false);
    }

    /**
     * Full page driver for onClick tests.
     *
     * @param htmlContent HTML fragment for body of page with clickable element identified by clickId ID attribute
     * @param numClicks number of times to click element
     * @param expectedAlerts array of expected popup values
     * @param exceptionOnError indicate to throw on error
     * @throws Exception if the test fails
     */
    private void onClickPageTest(final String htmlContent, final int numClicks,
            final boolean exceptionOnError) throws Exception {

        final WebClient client = getWebClientWithMockWebConnection();

        final MockWebConnection webConnection = getMockWebConnection();
        webConnection.setDefaultResponse(htmlContent);
        client.getOptions().setThrowExceptionOnScriptError(exceptionOnError);

        final List<String> collectedAlerts = new ArrayList<>();
        final CollectingAlertHandler alertHandler = new CollectingAlertHandler(collectedAlerts);
        client.setAlertHandler(alertHandler);

        final HtmlPage page = client.getPage(URL_FIRST);
        final HtmlElement clickable = page.getHtmlElementById("clickId");

        for (int i = 0; i < numClicks; i++) {
            clickable.click();
        }

        assertEquals(getExpectedAlerts(), collectedAlerts);
    }

    /**
     * Body driver for onClick tests.
     *
     * @param htmlBody HTML text body
     * @throws Exception if the test fails
     */
    private void onClickBodyTest(final String htmlBody) throws Exception {
        onClickPageTest(DOCTYPE_HTML + "<html><head><title>foo</title></head>\n" + htmlBody
                 + "</html>");
    }

    /**
     * Simple tag name driver for onClick tests.
     *
     * @param tagName HTML tag name for simple tag with text body
     * @throws Exception if the test fails
     */
    private void onClickSimpleTest(final String tagName) throws Exception {
        onClickBodyTest("<body><" + tagName + " id='clickId' onClick='alert(\"foo\")'>Text</" + tagName + "></body>\n");
    }

    /**
     * Test onClick handler and click method of anchor element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void anchor_onClick() throws Exception {
        onClickSimpleTest("a");
    }

    /**
     * Test onClick handler and click method of abbreviation element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void abbreviation_onClick() throws Exception {
        onClickSimpleTest("abbr");
    }

    /**
     * Test onClick handler and click method of acronym element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void acronym_onClick() throws Exception {
        onClickSimpleTest("acronym");
    }

    /**
     * Test onClick handler and click method of address element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void address_onClick() throws Exception {
        onClickSimpleTest("address");
    }

    /**
     * Test onClick handler and click method of bold element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void bold_onClick() throws Exception {
        onClickSimpleTest("b");
    }

    /**
     * Test onClick handler and click method of big element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void big_onClick() throws Exception {
        onClickSimpleTest("big");
    }

    /**
     * Test onClick handler and click method of blockquote element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void blockquote_onClick() throws Exception {
        onClickSimpleTest("blockquote");
    }

    /**
     * Test onClick handler and click method of body element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void body_onClick() throws Exception {
        onClickBodyTest("<body id='clickId' onClick='alert(\"foo\")'>Text</body>\n");
    }

    /**
     * Test onClick handler and click method of button element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void button_onClick() throws Exception {
        onClickBodyTest("<body><form><button id='clickId' onClick='alert(\"foo\")'>Item</button></form></body>\n");
    }

    /**
     * Test onClick handler can be called multiple times.
     *
     * @throws Exception if the test fails
     */
    @Test
    @Alerts({"foo0", "foo1"})
    public void button_onClickTwice() throws Exception {
        onClickPageTest("<body><form>\n"
                + "<button id='clickId' onClick='alert(\"foo\" + count++); return false;'>Item</button>\n"
                + "<script> var count = 0 </script>\n"
                + "</form></body>\n", 2);
    }

    /**
     * Test onClick handler and click method of cite element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void cite_onClick() throws Exception {
        onClickSimpleTest("cite");
    }

    /**
     * Test onClick handler and click method of code element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void code_onClick() throws Exception {
        onClickSimpleTest("code");
    }

    /**
     * Test onClick handler and click method of table column element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableColumn_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption><colgroup>\n"
            + "<col id='clickId' onClick='alert(\"foo\")'/></colgroup><thead><tr><th>\n"
            + "Header</th></tr></thead><tbody><tr><td>Data</td></tr></tbody><tfoot><tr>\n"
            + "th>Header</th></tr></tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of table column group element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableColumnGroup_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption>\n"
            + "<colgroup id='clickId' onClick='alert(\"foo\")'><col/></colgroup><thead>\n"
            + "<tr><th>Header</th></tr></thead><tbody><tr><td>Data</td></tr></tbody><tfoot>\n"
            + "<tr><th>Header</th></tr></tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of center element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void center_onClick() throws Exception {
        onClickSimpleTest("center");
    }

    /**
     * Test onClick handler and click method of table caption element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableCaption_onClick() throws Exception {
        onClickBodyTest("<body><table><caption id='clickId' onClick='alert(\"foo\")'>\n"
            + "Caption</caption><colgroup><col/></colgroup><thead><tr><th>Header</th></tr>\n"
            + "</thead><tbody><tr><td>Data</td></tr></tbody><tfoot><tr><th>Header</th></tr>\n"
            + "</tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of definition description dd element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void definitionDescription_onClick() throws Exception {
        onClickBodyTest("<body><dl><dt>Term</dt><dd id='clickId' onClick='alert(\"foo\")'>Definition</dd></dl></body>");
    }

    /**
     * Test that no NPE is thrown when JS fails on link click
     * and WebClient.setThrowExceptionOnScriptError(false) is used.
     * Test for bug #329.
     * @throws Exception if the test fails
     */
    @Test
    public void javaScriptError_onClick() throws Exception {
        onClickPageTest(DOCTYPE_HTML
                + "<html><head></head><body>\n"
                + "<form method='POST'><input type='button' id='clickId' onclick='y()'></form>\n"
                + "</body></html>",
                1, false);
    }

    /**
     * Test onClick handler and click method of definition element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void definition_onClick() throws Exception {
        onClickSimpleTest("dfn");
    }

    /**
     * Test onClick handler and click method of directory element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void directory_onClick() throws Exception {
        onClickSimpleTest("dir");
    }

    /**
     * Test onClick handler and click method of definition list dl element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void definitionList_onClick() throws Exception {
        onClickBodyTest("<body><dl id='clickId' onClick='alert(\"foo\")'><dt>Term</dt><dd>Definition</dd></dl></body>");
    }

    /**
     * Test onClick handler and click method of definition term dt element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void definitionTerm_onClick() throws Exception {
        onClickBodyTest("<body><dl><dt id='clickId' onClick='alert(\"foo\")'>Term</dt><dd>Definition</dd></dl></body>");
    }

    /**
     * Test onClick handler and click method of deleted text element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void deletedText_onClick() throws Exception {
        onClickSimpleTest("del");
    }

    /**
     * Test onClick handler and click method of division element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void division_onClick() throws Exception {
        onClickSimpleTest("div");
    }

    /**
     * Test onClick handler and click method of emphasis element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void emphasis_onClick() throws Exception {
        onClickSimpleTest("em");
    }

    /**
     * Test onClick handler and click method of field set element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void fieldSet_onClick() throws Exception {
        onClickBodyTest("<body><form><fieldset id='clickId' onClick='alert(\"foo\")'>\n"
            + "<legend>Legend</legend></fieldset></form></body>\n");
    }

    /**
     * Test onClick handler and click method of form element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void form_onClick() throws Exception {
        onClickSimpleTest("form");
    }

    /**
     * Test onClick handler and click method of italics element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void italics_onClick() throws Exception {
        onClickSimpleTest("i");
    }

    /**
     * Test onClick handler and click method of header1 element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void header1_onClick() throws Exception {
        onClickSimpleTest("h1");
    }

    /**
     * Test onClick handler and click method of header2 element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void header2_onClick() throws Exception {
        onClickSimpleTest("h2");
    }

    /**
     * Test onClick handler and click method of header3 element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void header3_onClick() throws Exception {
        onClickSimpleTest("h3");
    }

    /**
     * Test onClick handler and click method of header4 element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void header4_onClick() throws Exception {
        onClickSimpleTest("h4");
    }

    /**
     * Test onClick handler and click method of header5 element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void header5_onClick() throws Exception {
        onClickSimpleTest("h5");
    }

    /**
     * Test onClick handler and click method of header6 element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void header6_onClick() throws Exception {
        onClickSimpleTest("h6");
    }

    /**
     * Test onClick handler and click method of horizontal rule element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void horizontalRule_onClick() throws Exception {
        onClickSimpleTest("hr");
    }

    /**
     * Test onClick handler and click method of input element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void input_onClick() throws Exception {
        onClickBodyTest("<body><form><input id='clickId' onClick='alert(\"foo\")'>Item</input></form></body>\n");
    }

    /**
     * Test onClick handler and click method of inserted text element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void insertedText_onClick() throws Exception {
        onClickSimpleTest("ins");
    }

    /**
     * Test onClick handler and click method of keyboard element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void keyboard_onClick() throws Exception {
        onClickSimpleTest("kbd");
    }

    /**
     * Test onClick handler and click method of label element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void label_onClick() throws Exception {
        onClickBodyTest("<body><form><label id='clickId' onClick='alert(\"foo\")'>Item</label></form></body>\n");
    }

    /**
     * Test onClick handler and click method of legend element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void legend_onClick() throws Exception {
        onClickBodyTest("<body><form><fieldset><legend id='clickId' onClick='alert(\"foo\")'>\n"
            + "Legend</legend></fieldset></form></body>\n");
    }

    /**
     * Test onClick handler and click method of List Item element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void listItem_onClick() throws Exception {
        onClickBodyTest("<body><ol><li id='clickId' onClick='alert(\"foo\")'>Item</li></ol></body>\n");
    }

    /**
     * Test onClick handler and click method of menu element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void menu_onClick() throws Exception {
        onClickBodyTest("<body><menu id='clickId' onClick='alert(\"foo\")'><li>Item</li></menu></body>\n");
    }

    /**
     * Test onClick handler and click method of object element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void object_onClick() throws Exception {
        onClickSimpleTest("object");
    }

    /**
     * Test onClick handler and click method of option element.
     *
     * @throws Exception if the test fails
     */
    @Test
    @Alerts("foo")
    @BuggyWebDriver(CHROME = "")
    // ChromeDriver does not generate a "foo" but it occurs manually
    public void option_onClick() throws Exception {
        final String htmlContent = DOCTYPE_HTML
                + "<html><head><title>foo</title></head>\n"
                + "<body><form><select size='2'><option id='clickId' onClick='alert(\"foo\")'>\n"
                + "Option</option></select></form></body>\n"
                + "</html>";

        onClickPageTest(htmlContent, 1);
    }

    /**
     * Test onClick handler and click method of Option Group element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void optionGroup_onClick() throws Exception {
        onClickBodyTest("<body><form><select><optgroup id='clickId' onClick='alert(\"foo\")'>\n"
            + "<option>Option</option></optgroup></select></form></body>\n");
    }

    /**
     * Test onClick handler and click method of Ordered List element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void orderedList_onClick() throws Exception {
        onClickBodyTest("<body><ol id='clickId' onClick='alert(\"foo\")'><li>Item</li></ol></body>\n");
    }

    /**
     * Test onClick handler and click method of paragraph element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void paragraph_onClick() throws Exception {
        onClickSimpleTest("p");
    }

    /**
     * Test onClick handler and click method of pre element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void pre_onClick() throws Exception {
        onClickSimpleTest("pre");
    }

    /**
     * Test onClick handler and click method of inline Quotation element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void quotation_onClick() throws Exception {
        onClickSimpleTest("q");
    }

    /**
     * Test onClick handler and click method of strikethrough element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void strikethrough_onClick() throws Exception {
        onClickSimpleTest("s");
    }

    /**
     * Test onClick handler and click method of sample element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void sample_onClick() throws Exception {
        onClickSimpleTest("samp");
    }

    /**
     * Test onClick handler and click method of select element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void select_onClick() throws Exception {
        onClickBodyTest("<body><form><select id='clickId' onClick='alert(\"foo\")'>\n"
            + "<option>Option</option></select></form></body>\n");
    }

    /**
     * Test onClick handler and click method of small element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void small_onClick() throws Exception {
        onClickSimpleTest("small");
    }

    /**
     * Test onClick handler and click method of span element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void span_onClick() throws Exception {
        onClickSimpleTest("span");
    }

    /**
     * Test onClick handler and click method of strike element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void strike_onClick() throws Exception {
        onClickSimpleTest("strike");
    }

    /**
     * Test onClick handler and click method of subscript element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void subscript_onClick() throws Exception {
        onClickSimpleTest("sub");
    }

    /**
     * Test onClick handler and click method of superscript element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void superscript_onClick() throws Exception {
        onClickSimpleTest("sup");
    }

    /**
     * Test onClick handler and click method of table element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void table_onClick() throws Exception {
        onClickBodyTest("<body><table id='clickId' onClick='alert(\"foo\")'><caption>\n"
            + "Caption</caption><colgroup><col/></colgroup><thead><tr><th>Header</th></tr>\n"
            + "</thead><tbody><tr><td>Data</td></tr></tbody><tfoot><tr><th>Header</th></tr>\n"
            + "</tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of table body element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableBody_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption><colgroup><col/>\n"
            + "</colgroup><thead><tr><th>Header</th></tr></thead>\n"
            + "<tbody id='clickId' onClick='alert(\"foo\")'><tr><td>Data</td></tr>\n"
            + "</tbody><tfoot><tr><th>Header</th></tr></tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of table data cell element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableDataCell_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption><colgroup><col/>\n"
            + "</colgroup><thead><tr><th>Header</th></tr></thead><tbody><tr>\n"
            + "<td id='clickId' onClick='alert(\"foo\")'>Data</td></tr></tbody>\n"
            + "<tfoot><tr><th>Header</th></tr></tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of textarea element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void textarea_onClick() throws Exception {
        onClickBodyTest("<body><form><textarea id='clickId' onClick='alert(\"foo\")'>Item</textarea></form></body>\n");
    }

    /**
     * Test onClick handler and click method of table footer element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableFooter_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption><colgroup><col/>\n"
            + "</colgroup><thead><tr><th>Header</th></tr></thead><tbody><tr><td>Data</td>\n"
            + "</tr></tbody><tfoot id='clickId' onClick='alert(\"foo\")'><tr><th>Header</th>\n"
            + "</tr></tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of table header cell element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableHeaderCell_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption><colgroup>\n"
            + "<col/></colgroup><thead><tr><th id='clickId' onClick='alert(\"foo\")'>\n"
            + "Header</th></tr></thead><tbody><tr><td>Data</td></tr></tbody><tfoot><tr>\n"
            + "<th>Header</th></tr></tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of table header element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableHeader_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption><colgroup><col/>\n"
            + "</colgroup><thead id='clickId' onClick='alert(\"foo\")'><tr><th>Header</th>\n"
            + "</tr></thead><tbody><tr><td>Data</td></tr></tbody><tfoot><tr><th>Header</th>\n"
            + "</tr></tfoot></table></body>\n");
    }

    /**
     * Test onClick handler and click method of table row element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableRow_onClick() throws Exception {
        onClickBodyTest("<body><table><caption>Caption</caption><colgroup><col/>\n"
            + "</colgroup><thead><tr><th>Header</th></tr></thead><tbody>\n"
            + "<tr id='clickId' onClick='alert(\"foo\")'><td>Data</td></tr></tbody>\n"
            + "<tfoot><tr><th>Header</th></tr></tfoot></table></body>\n");
    }

    /**
     * Test when HtmlTableRow.onclick is set by JavaScript.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableRow_onClickSetOnLoad() throws Exception {
        onClickPageTest(DOCTYPE_HTML
                        + "<html><head>\n"
                        + "<script language='JavaScript'>\n"
                        + "function doFoo() { alert('foo');        }\n"
                        + "function doOnload() { document.getElementById('clickId').onclick = doFoo;}\n"
                        + "</script>\n"
                        + "</head><body onload=\"doOnload();\">\n"
                        + "<table><tbody><tr id='clickId'><td>cell value</td></tr></tbody></table>\n"
                        + "</body></html>");
    }

    /**
     * @throws Exception if the test fails
     */
    @Test
    public void checkbox_onClickUpdatesStateFirst() throws Exception {
        onClickPageTest(DOCTYPE_HTML
                        + "<html><head>\n"
                        + "<script language='JavaScript'>\n"
                        + "function doFoo(event) { if (this.checked) alert('foo'); else alert('bar'); }\n"
                        + "function doOnload() { document.getElementById('clickId').onclick = doFoo;}\n"
                        + "</script>\n"
                        + "</head><body onload=\"doOnload();\">\n"
                        + "<input type='checkbox' id='clickId'>\n"
                        + "</body></html>");
    }

    /**
     * Test when HtmlTableRow.onclick is set by a JavaScript.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void tableRow_onClickSetByNestedScript() throws Exception {
        onClickBodyTest("<body><table><tbody><tr id='clickId'><td>cell value</td></tr></tbody></table>\n"
                        + "<script language='JavaScript'>\n"
                                + "function doFoo(event) { alert('foo'); }\n"
                                + "document.getElementById('clickId').onclick = doFoo;</script></body>\n");
    }

    /**
     * Test onClick handler and click method of teletype element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void teletype_onClick() throws Exception {
        onClickSimpleTest("tt");
    }

    /**
     * Test onClick handler and click method of underline element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void underline_onClick() throws Exception {
        onClickSimpleTest("u");
    }

    /**
     * Test onClick handler and click method of unordered List element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void unorderedList_onClick() throws Exception {
        onClickBodyTest("<body><ul id='clickId' onClick='alert(\"foo\")'><li>Item</li></ul></body>\n");
    }

    /**
     * Test onClick handler and click method of variable element.
     *
     * @throws Exception if the test fails
     */
    @Test
    public void variable_onClick() throws Exception {
        onClickSimpleTest("var");
    }

    /**
     * Test setting onClick handler from inside the onClick handler.
     *
     * @throws Exception if the test fails
     */
    @Test
    @Alerts("foo")
    public void setOnClick() throws Exception {
        onClickPageTest(DOCTYPE_HTML
                + "<html><body><form>\n"
                + "<button type='button' id='clickId' onclick='alert(\"foo\"); onclick=null;'>Item</button>\n"
                + "</form></body></html>", 2);
    }
}