1 /* 2 * Copyright (C) 2007 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.internal.util; 18 19 import com.android.internal.util.CharSequences; 20 import static com.android.internal.util.CharSequences.forAsciiBytes; 21 import junit.framework.TestCase; 22 import android.test.suitebuilder.annotation.SmallTest; 23 24 public class CharSequencesTest extends TestCase { 25 26 @SmallTest 27 public void testCharSequences() { 28 String s = "Crazy Bob"; 29 byte[] bytes = s.getBytes(); 30 31 String copy = toString(forAsciiBytes(bytes)); 32 assertTrue(s.equals(copy)); 33 34 copy = toString(forAsciiBytes(bytes, 0, s.length())); 35 assertTrue(s.equals(copy)); 36 37 String crazy = toString(forAsciiBytes(bytes, 0, 5)); 38 assertTrue("Crazy".equals(crazy)); 39 40 String a = toString(forAsciiBytes(bytes, 0, 3).subSequence(2, 3)); 41 assertTrue("a".equals(a)); 42 43 String empty = toString(forAsciiBytes(bytes, 0, 3).subSequence(3, 3)); 44 assertTrue("".equals(empty)); 45 46 assertTrue(CharSequences.equals("bob", "bob")); 47 assertFalse(CharSequences.equals("b", "bob")); 48 assertFalse(CharSequences.equals("", "bob")); 49 } 50 51 /** 52 * Converts a CharSequence to a string the slow way. Useful for testing 53 * a CharSequence implementation. 54 */ 55 static String toString(CharSequence charSequence) { 56 return new StringBuilder().append(charSequence).toString(); 57 } 58 } 59
