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package org.custommonkey.xmlunit;

import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.verify;

import java.io.StringReader;
import org.w3c.dom.Document;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;

import junit.framework.TestSuite;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

/**
 * JUnit test for HTMLDocumentBuilder
 */
public class test_HTMLDocumentBuilder extends XMLTestCase {
    @Mock
    private ContentHandler handler;

    private static final String xHtml =
        "<html><head><title>test</title></head>" +
        "<body><h1>hello</h1><p>world</p><hr/><div><img src=\"foo.bar\"/>" +
        "<ul><li>one</li><li>two</li></ul></div></body></html>";
    private Document xHtmlDocument;
    private HTMLDocumentBuilder parser;
    private TolerantSaxDocumentBuilder builder;

    public void testParseGoodHtml() throws Exception {
        assertParsedDocumentEqual(xHtmlDocument, xHtml);
        assertEquals(parser.getTrace(),-1, parser.getTrace().indexOf("WARNING"));
    }

    public void testParseOldHtml() throws Exception {
        String oldHTML=
            "<html><head><title>test</title></head>" +
            "<body><h1>hello</h1><p>world<hr><div><img src=\"foo.bar\">" +
            "<ul><li>one<li>two</ul></div></body></html>";
        assertParsedDocumentEqual(xHtmlDocument, oldHTML);
        assertEquals(parser.getTrace(),-1, parser.getTrace().indexOf("WARNING"));
    }

    public void testParsePoorHtml() throws Exception {
        String poorHTML=
            "<html><head><title>test</title></head>" +
            "<body><h1>hello</h1><p>world<hr><div><img src=\"foo.bar\">" +
            "<ul><li>one<li>two";
        assertParsedDocumentEqual(xHtmlDocument, poorHTML);
        assertEquals(parser.getTrace(),-1, parser.getTrace().indexOf("WARNING"));
    }

    public void testCharactersAfterSimpleElement() throws Exception {
        HTMLDocumentBuilder.SwingEvent2SaxAdapter adapter =
            new MyHTMLDocumentBuilder().create();
        adapter.parse(new StringReader("<foo/>"), handler);
        adapter.handleSimpleTag(javax.swing.text.html.HTML.Tag.BR,
                                new javax.swing.text.SimpleAttributeSet(),
                                0);
        char[] foo = ">foo".toCharArray();
        adapter.handleText(foo, 0);
        verify(handler).characters(foo, 1, 3);
    }

    public void testHandlingOfSAXExceptions() throws Exception {
        SAXException e = new SAXException();
        doThrow(e).when(handler).endDocument();
        HTMLDocumentBuilder.SwingEvent2SaxAdapter adapter =
            new MyHTMLDocumentBuilder().create();
        try {
            adapter.parse(new StringReader("<foo/>"), handler);
        } catch (SAXException ex) {
            assertSame(e, ex);
        }
    }

    public void testParseWithComment() throws Exception {
        String h = "<!-- comment -->" + xHtml;
        assertParsedDocumentEqual(XMLUnit.buildControlDocument(h), h);
    }

    private void assertParsedDocumentEqual(Document control, String test)
        throws Exception {
        assertXMLEqual(control, parser.parse(test));
    }

    public test_HTMLDocumentBuilder(String name) {
        super(name);
    }

    public void setUp() throws Exception {
        xHtmlDocument = XMLUnit.buildControlDocument(xHtml);
        builder = new TolerantSaxDocumentBuilder(XMLUnit.newTestParser());
        parser = new HTMLDocumentBuilder(builder);
        MockitoAnnotations.initMocks(this);
    }

    public static TestSuite suite() {
        return new TestSuite(test_HTMLDocumentBuilder.class);
    }

    private class MyHTMLDocumentBuilder extends HTMLDocumentBuilder {
        private MyHTMLDocumentBuilder() {
            super(builder);
        }
        public SwingEvent2SaxAdapter create() {
            return new SwingEvent2SaxAdapter();
        }
    }
}