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 
17 package com.android.contacts.common.format;
18 
19 import android.test.suitebuilder.annotation.SmallTest;
20 import android.text.Html;
21 import android.text.SpannableString;
22 import android.text.Spanned;
23 import android.text.TextUtils;
24 import android.text.style.StyleSpan;
25 import android.widget.TextView;
26 
27 import junit.framework.Assert;
28 
29 /**
30  * Utility class to check the value of spanned text in text views.
31  */
32 @SmallTest
33 public 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      */
checkHtmlText(String expectedHtmlText, TextView textView)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      */
assertPrefixSpan(CharSequence seq, int start, int end)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 
getNumForegroundColorSpansBetween(Spanned value, int start, int end)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      */
assertNotSpanned(CharSequence seq, String expected)80     public static void assertNotSpanned(CharSequence seq, String expected) {
81         Assert.assertFalse(seq instanceof Spanned);
82         Assert.assertEquals(expected, seq);
83     }
84 
getNextTransition(SpannableString seq, int start)85     public static int getNextTransition(SpannableString seq, int start) {
86         return seq.nextSpanTransition(start, seq.length(), StyleSpan.class);
87     }
88 }
89