1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package libcore.xml;
18
19import junit.framework.TestCase;
20import org.w3c.dom.Document;
21import org.w3c.dom.Element;
22import org.w3c.dom.Node;
23import org.w3c.dom.NodeList;
24import tests.support.resource.Support_Resources;
25
26import javax.xml.parsers.DocumentBuilder;
27import javax.xml.parsers.DocumentBuilderFactory;
28import java.io.ByteArrayInputStream;
29import java.io.File;
30import java.util.ArrayList;
31import java.util.List;
32
33public class NodeTest extends TestCase {
34
35    /**
36     * For bug 779: Node#getNextSibling throws IndexOutOfBoundsException.
37     */
38    public void test_getNextSibling() throws Exception {
39        // Calling getNextSibling when there is no next sibling should return null.
40        // From http://code.google.com/p/android/issues/detail?id=779.
41        ByteArrayInputStream bis = new ByteArrayInputStream("<root/>".getBytes());
42        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(bis);
43        Node root = document.getDocumentElement();
44        assertNull(root.getNextSibling());
45    }
46
47    public void testGetBaseUri() throws Exception {
48        DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
49        File file = Support_Resources.resourceToTempFile("/simple.xml");
50        Document document = builder.parse(file);
51
52        assertFileUriEquals(file, document.getBaseURI());
53
54        Element documentElement = document.getDocumentElement();
55        for (Node node : flattenSubtree(documentElement)) {
56            if (node.getNodeType() == Node.ELEMENT_NODE
57                    || node.getNodeType() == Node.DOCUMENT_NODE) {
58                assertFileUriEquals(file, node.getBaseURI());
59            } else {
60                assertNull("Unexpected base URI for " + node, node.getBaseURI());
61            }
62        }
63
64        // TODO: test other node types
65        // TODO: test resolution of relative paths
66        // TODO: test URI sanitization
67    }
68
69    private void assertFileUriEquals(File expectedFile, String actual) {
70        assertTrue("Expected URI for: " + expectedFile + " but was " + actual + ". ",
71                actual.equals("file:" + expectedFile)
72                        || actual.equals("file://" + expectedFile));
73    }
74
75    private List<Node> flattenSubtree(Node subtree) {
76        List<Node> result = new ArrayList<Node>();
77        traverse(subtree, result);
78        return result;
79    }
80
81    private void traverse(Node node, List<Node> sink) {
82        sink.add(node);
83
84        NodeList children = node.getChildNodes();
85        for (int i = 0; i < children.getLength(); i++) {
86            traverse(children.item(i), sink);
87        }
88    }
89}
90