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 import java.util.Iterator; 21 import java.util.NoSuchElementException; 22 import junit.framework.TestCase; 23 24 /** 25 * Tests for {@link UnmodifiableIterator}. 26 * 27 * @author Jared Levy 28 */ 29 @GwtCompatible 30 public class UnmodifiableIteratorTest extends TestCase { 31 32 @SuppressWarnings("DoNotCall") testRemove()33 public void testRemove() { 34 final String[] array = {"a", "b", "c"}; 35 36 Iterator<String> iterator = 37 new UnmodifiableIterator<String>() { 38 int i; 39 40 @Override 41 public boolean hasNext() { 42 return i < array.length; 43 } 44 45 @Override 46 public String next() { 47 if (!hasNext()) { 48 throw new NoSuchElementException(); 49 } 50 return array[i++]; 51 } 52 }; 53 54 assertTrue(iterator.hasNext()); 55 assertEquals("a", iterator.next()); 56 try { 57 iterator.remove(); 58 fail(); 59 } catch (UnsupportedOperationException expected) { 60 } 61 } 62 } 63