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      1 /*
      2  * Copyright (C) 2010 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.settings.bluetooth;
     18 
     19 import android.test.AndroidTestCase;
     20 import android.text.InputFilter;
     21 import android.text.SpannableStringBuilder;
     22 
     23 import com.android.settings.bluetooth.Utf8ByteLengthFilter;
     24 
     25 import dalvik.annotation.TestLevel;
     26 import dalvik.annotation.TestTargetClass;
     27 import dalvik.annotation.TestTargetNew;
     28 import dalvik.annotation.TestTargets;
     29 
     30 @TestTargetClass(Utf8ByteLengthFilter.class)
     31 public class Utf8ByteLengthFilterTest extends AndroidTestCase {
     32 
     33     @TestTargets({
     34         @TestTargetNew(
     35             level = TestLevel.COMPLETE,
     36             method = "filter",
     37             args = {java.lang.CharSequence.class, int.class, int.class, android.text.Spanned.class,
     38                     int.class, int.class}
     39         ),
     40         @TestTargetNew(
     41             level = TestLevel.COMPLETE,
     42             method = "Utf8ByteLengthFilter",
     43             args = {int.class}
     44         )
     45     })
     46     public void testFilter() {
     47         // Define the variables
     48         CharSequence source;
     49         SpannableStringBuilder dest;
     50         // Constructor to create a LengthFilter
     51         InputFilter lengthFilter = new Utf8ByteLengthFilter(10);
     52         InputFilter[] filters = {lengthFilter};
     53 
     54         // filter() implicitly invoked. If the total length > filter length, the filter will
     55         // cut off the source CharSequence from beginning to fit the filter length.
     56         source = "abc";
     57         dest = new SpannableStringBuilder("abcdefgh");
     58         dest.setFilters(filters);
     59 
     60         dest.insert(1, source);
     61         String expectedString1 = "aabbcdefgh";
     62         assertEquals(expectedString1, dest.toString());
     63 
     64         dest.replace(5, 8, source);
     65         String expectedString2 = "aabbcabcgh";
     66         assertEquals(expectedString2, dest.toString());
     67 
     68         dest.insert(2, source);
     69         assertEquals(expectedString2, dest.toString());
     70 
     71         dest.delete(1, 3);
     72         String expectedString3 = "abcabcgh";
     73         assertEquals(expectedString3, dest.toString());
     74 
     75         dest.append("12345");
     76         String expectedString4 = "abcabcgh12";
     77         assertEquals(expectedString4, dest.toString());
     78 
     79         source = "\u60a8\u597d";  // 2 Chinese chars == 6 bytes in UTF-8
     80         dest.replace(8, 10, source);
     81         assertEquals(expectedString3, dest.toString());
     82 
     83         dest.replace(0, 1, source);
     84         String expectedString5 = "\u60a8bcabcgh";
     85         assertEquals(expectedString5, dest.toString());
     86 
     87         dest.replace(0, 4, source);
     88         String expectedString6 = "\u60a8\u597dbcgh";
     89         assertEquals(expectedString6, dest.toString());
     90 
     91         source = "\u00a3\u00a5";  // 2 Latin-1 chars == 4 bytes in UTF-8
     92         dest.delete(2, 6);
     93         dest.insert(0, source);
     94         String expectedString7 = "\u00a3\u00a5\u60a8\u597d";
     95         assertEquals(expectedString7, dest.toString());
     96 
     97         dest.replace(2, 3, source);
     98         String expectedString8 = "\u00a3\u00a5\u00a3\u597d";
     99         assertEquals(expectedString8, dest.toString());
    100 
    101         dest.replace(3, 4, source);
    102         String expectedString9 = "\u00a3\u00a5\u00a3\u00a3\u00a5";
    103         assertEquals(expectedString9, dest.toString());
    104 
    105         // filter() explicitly invoked
    106         dest = new SpannableStringBuilder("abcdefgh");
    107         CharSequence beforeFilterSource = "TestLengthFilter";
    108         String expectedAfterFilter = "TestLength";
    109         CharSequence actualAfterFilter = lengthFilter.filter(beforeFilterSource, 0,
    110                 beforeFilterSource.length(), dest, 0, dest.length());
    111         assertEquals(expectedAfterFilter, actualAfterFilter);
    112     }
    113 }
    114