1/* 2 * Copyright (C) 2016 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 libcore.java.lang; 18 19import junit.framework.TestCase; 20 21import java.util.Arrays; 22 23public class StringBufferTest extends TestCase { 24 25 public void testChars() { 26 StringBuffer s = new StringBuffer("Hello\n\tworld"); 27 int[] expected = new int[s.length()]; 28 for (int i = 0; i < s.length(); ++i) { 29 expected[i] = (int) s.charAt(i); 30 } 31 assertTrue(Arrays.equals(expected, s.chars().toArray())); 32 33 // Surrogate code point 34 char high = '\uD83D', low = '\uDE02'; 35 StringBuffer surrogateCP = new StringBuffer().append(new char[]{high, low, low}); 36 assertTrue(Arrays.equals(new int[]{high, low, low}, surrogateCP.chars().toArray())); 37 } 38 39 public void testCodePoints() { 40 StringBuffer s = new StringBuffer("Hello\n\tworld"); 41 int[] expected = new int[s.length()]; 42 for (int i = 0; i < s.length(); ++i) { 43 expected[i] = (int) s.charAt(i); 44 } 45 assertTrue(Arrays.equals(expected, s.codePoints().toArray())); 46 47 // Surrogate code point 48 char high = '\uD83D', low = '\uDE02'; 49 StringBuffer surrogateCP = new StringBuffer().append(new char[]{high, low, low, '0'}); 50 assertEquals(Character.toCodePoint(high, low), surrogateCP.codePoints().toArray()[0]); 51 assertEquals((int) low, surrogateCP.codePoints().toArray()[1]); // Unmatched surrogate. 52 assertEquals((int) '0', surrogateCP.codePoints().toArray()[2]); 53 } 54} 55