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.common.format;
18
19import android.test.suitebuilder.annotation.SmallTest;
20import android.text.Html;
21import android.text.SpannableString;
22import android.text.Spanned;
23import android.text.TextUtils;
24import android.text.style.StyleSpan;
25import android.widget.TextView;
26
27import junit.framework.Assert;
28
29/**
30 * Utility class to check the value of spanned text in text views.
31 */
32@SmallTest
33public class SpannedTestUtils {
34    /**
35     * Checks that the text contained in the text view matches the given HTML text.
36     *
37     * @param expectedHtmlText the expected text to be in the text view
38     * @param textView the text view from which to get the text
39     */
40    public static void checkHtmlText(String expectedHtmlText, TextView textView) {
41        String actualHtmlText = Html.toHtml((Spanned) textView.getText());
42        if (TextUtils.isEmpty(expectedHtmlText)) {
43            // If the text is empty, it does not add the <p></p> bits to it.
44            Assert.assertEquals("", actualHtmlText);
45        } else {
46            Assert.assertEquals("<p dir=ltr>" + expectedHtmlText + "</p>\n", actualHtmlText);
47        }
48    }
49
50
51    /**
52     * Assert span exists in the correct location.
53     *
54     * @param seq The spannable string to check.
55     * @param start The starting index.
56     * @param end The ending index.
57     */
58    public static void assertPrefixSpan(CharSequence seq, int start, int end) {
59        Assert.assertTrue(seq instanceof Spanned);
60        Spanned spannable = (Spanned) seq;
61
62        if (start > 0) {
63            Assert.assertEquals(0, getNumForegroundColorSpansBetween(spannable, 0, start - 1));
64        }
65        Assert.assertEquals(1, getNumForegroundColorSpansBetween(spannable, start, end));
66        Assert.assertEquals(0, getNumForegroundColorSpansBetween(spannable, end + 1,
67                spannable.length() - 1));
68    }
69
70    private static int getNumForegroundColorSpansBetween(Spanned value, int start, int end) {
71        return value.getSpans(start, end, StyleSpan.class).length;
72    }
73
74    /**
75     * Asserts that the given character sequence is not a Spanned object and text is correct.
76     *
77     * @param seq The sequence to check.
78     * @param expected The expected text.
79     */
80    public static void assertNotSpanned(CharSequence seq, String expected) {
81        Assert.assertFalse(seq instanceof Spanned);
82        Assert.assertEquals(expected, seq);
83    }
84
85    public static int getNextTransition(SpannableString seq, int start) {
86        return seq.nextSpanTransition(start, seq.length(), StyleSpan.class);
87    }
88}
89