1 /* 2 * Copyright (C) 2008 The Guava Authors 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.google.common.collect; 18 19 import com.google.common.annotations.GwtCompatible; 20 21 import junit.framework.TestCase; 22 23 import java.util.Iterator; 24 import java.util.NoSuchElementException; 25 26 /** 27 * Tests for {@link UnmodifiableIterator}. 28 * 29 * @author Jared Levy 30 */ 31 @GwtCompatible 32 public class UnmodifiableIteratorTest extends TestCase { 33 34 public void testRemove() { 35 final String[] array = {"a", "b", "c"}; 36 37 Iterator<String> iterator = new UnmodifiableIterator<String>() { 38 int i; 39 @Override 40 public boolean hasNext() { 41 return i < array.length; 42 } 43 @Override 44 public String next() { 45 if (!hasNext()) { 46 throw new NoSuchElementException(); 47 } 48 return array[i++]; 49 } 50 }; 51 52 assertTrue(iterator.hasNext()); 53 assertEquals("a", iterator.next()); 54 try { 55 iterator.remove(); 56 fail(); 57 } catch (UnsupportedOperationException expected) {} 58 } 59 } 60
