UrlUtils.java revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5package org.chromium.base.test.util;
6
7import org.chromium.base.PathUtils;
8
9import junit.framework.Assert;
10
11/**
12 * Collection of URL utilities.
13 */
14public class UrlUtils {
15    private final static String DATA_DIR = "/chrome/test/data/";
16
17    /**
18     * Construct a suitable URL for loading a test data file.
19     * @param path Pathname relative to external/chrome/testing/data
20     */
21    public static String getTestFileUrl(String path) {
22        return "file://" + PathUtils.getExternalStorageDirectory() + DATA_DIR + path;
23    }
24
25    /**
26     * Construct a data:text/html URI for loading from an inline HTML.
27     * @param html An unencoded HTML
28     * @return String An URI that contains the given HTML
29     */
30    public static String encodeHtmlDataUri(String html) {
31        try {
32            // URLEncoder encodes into application/x-www-form-encoded, so
33            // ' '->'+' needs to be undone and replaced with ' '->'%20'
34            // to match the Data URI requirements.
35            String encoded =
36                    "data:text/html;utf-8," +
37                    java.net.URLEncoder.encode(html, "UTF-8");
38            encoded = encoded.replace("+", "%20");
39            return encoded;
40        } catch (java.io.UnsupportedEncodingException e) {
41            Assert.fail("Unsupported encoding: " + e.getMessage());
42            return null;
43        }
44    }
45}
46