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      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      */
     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