1/*
2 * Copyright (C) 2011 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 com.android.contacts.format;
18
19import android.text.Html;
20import android.text.SpannableString;
21import android.text.Spanned;
22import android.text.TextUtils;
23import android.text.style.StyleSpan;
24import android.widget.TextView;
25
26import junit.framework.Assert;
27
28/**
29 * Utility class to check the value of spanned text in text views.
30 */
31public class SpannedTestUtils {
32    /**
33     * Checks that the text contained in the text view matches the given HTML text.
34     *
35     * @param expectedHtmlText the expected text to be in the text view
36     * @param textView the text view from which to get the text
37     */
38    public static void checkHtmlText(String expectedHtmlText, TextView textView) {
39        String actualHtmlText = Html.toHtml((Spanned) textView.getText());
40        if (TextUtils.isEmpty(expectedHtmlText)) {
41            // If the text is empty, it does not add the <p></p> bits to it.
42            Assert.assertEquals("", actualHtmlText);
43        } else {
44            Assert.assertEquals("<p dir=ltr>" + expectedHtmlText + "</p>\n", actualHtmlText);
45        }
46    }
47
48
49    /**
50     * Assert span exists in the correct location.
51     *
52     * @param seq The spannable string to check.
53     * @param start The starting index.
54     * @param end The ending index.
55     */
56    public static void assertPrefixSpan(CharSequence seq, int start, int end) {
57        Assert.assertTrue(seq instanceof Spanned);
58        Spanned spannable = (Spanned) seq;
59
60        if (start > 0) {
61            Assert.assertEquals(0, getNumForegroundColorSpansBetween(spannable, 0, start - 1));
62        }
63        Assert.assertEquals(1, getNumForegroundColorSpansBetween(spannable, start, end));
64        Assert.assertEquals(0, getNumForegroundColorSpansBetween(spannable, end + 1,
65                spannable.length() - 1));
66    }
67
68    private static int getNumForegroundColorSpansBetween(Spanned value, int start, int end) {
69        return value.getSpans(start, end, StyleSpan.class).length;
70    }
71
72    /**
73     * Asserts that the given character sequence is not a Spanned object and text is correct.
74     *
75     * @param seq The sequence to check.
76     * @param expected The expected text.
77     */
78    public static void assertNotSpanned(CharSequence seq, String expected) {
79        Assert.assertFalse(seq instanceof Spanned);
80        Assert.assertEquals(expected, seq);
81    }
82
83    public static int getNextTransition(SpannableString seq, int start) {
84        return seq.nextSpanTransition(start, seq.length(), StyleSpan.class);
85    }
86}
87