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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package com.google.protobuf;
+
+import static java.util.Arrays.asList;
+
+import junit.framework.TestCase;
+
+import java.util.Collections;
+import java.util.ConcurrentModificationException;
+import java.util.Iterator;
+
+/**
+ * Tests for {@link BooleanArrayList}.
+ * 
+ * @author dweis@google.com (Daniel Weis)
+ */
+public class BooleanArrayListTest extends TestCase {
+  
+  private static final BooleanArrayList UNARY_LIST = newImmutableBooleanArrayList(true);
+  private static final BooleanArrayList TERTIARY_LIST =
+      newImmutableBooleanArrayList(true, true, false);
+  
+  private BooleanArrayList list;
+  
+  @Override
+  protected void setUp() throws Exception {
+    list = new BooleanArrayList();
+  }
+  
+  public void testEmptyListReturnsSameInstance() {
+    assertSame(BooleanArrayList.emptyList(), BooleanArrayList.emptyList());
+  }
+  
+  public void testEmptyListIsImmutable() {
+    assertImmutable(BooleanArrayList.emptyList());
+  }
+  
+  public void testMakeImmutable() {
+    list.addBoolean(true);
+    list.addBoolean(false);
+    list.addBoolean(true);
+    list.addBoolean(true);
+    list.makeImmutable();
+    assertImmutable(list);
+  }
+  
+  public void testCopyConstructor() {
+    BooleanArrayList copy = new BooleanArrayList(TERTIARY_LIST);
+    assertEquals(TERTIARY_LIST, copy);
+
+    copy = new BooleanArrayList(BooleanArrayList.emptyList());
+    assertEquals(BooleanArrayList.emptyList(), copy);
+    
+    copy = new BooleanArrayList(asList(false, false, true));
+    assertEquals(asList(false, false, true), copy);
+
+    copy = new BooleanArrayList(Collections.<Boolean>emptyList());
+    assertEquals(BooleanArrayList.emptyList(), copy);
+  }
+  
+  public void testModificationWithIteration() {
+    list.addAll(asList(true, false, false, true));
+    Iterator<Boolean> iterator = list.iterator();
+    assertEquals(4, list.size());
+    assertEquals(true, (boolean) list.get(0));
+    assertEquals(true, (boolean) iterator.next());
+    list.set(0, true);
+    assertEquals(false, (boolean) iterator.next());
+    
+    list.remove(0);
+    try {
+      iterator.next();
+      fail();
+    } catch (ConcurrentModificationException e) {
+      // expected
+    }
+    
+    iterator = list.iterator();
+    list.add(0, false);
+    try {
+      iterator.next();
+      fail();
+    } catch (ConcurrentModificationException e) {
+      // expected
+    }
+  }
+  
+  public void testGet() {
+    assertEquals(true, (boolean) TERTIARY_LIST.get(0));
+    assertEquals(true, (boolean) TERTIARY_LIST.get(1));
+    assertEquals(false, (boolean) TERTIARY_LIST.get(2));
+    
+    try {
+      TERTIARY_LIST.get(-1);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+    
+    try {
+      TERTIARY_LIST.get(3);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+  }
+  
+  public void testGetInt() {
+    assertEquals(true, TERTIARY_LIST.getBoolean(0));
+    assertEquals(true, TERTIARY_LIST.getBoolean(1));
+    assertEquals(false, TERTIARY_LIST.getBoolean(2));
+    
+    try {
+      TERTIARY_LIST.get(-1);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+    
+    try {
+      TERTIARY_LIST.get(3);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+  }
+  
+  public void testSize() {
+    assertEquals(0, BooleanArrayList.emptyList().size());
+    assertEquals(1, UNARY_LIST.size());
+    assertEquals(3, TERTIARY_LIST.size());
+
+    list.addBoolean(true);
+    list.addBoolean(false);
+    list.addBoolean(false);
+    list.addBoolean(false);
+    assertEquals(4, list.size());
+    
+    list.remove(0);
+    assertEquals(3, list.size());
+    
+    list.add(true);
+    assertEquals(4, list.size());
+  }
+  
+  public void testSet() {
+    list.addBoolean(false);
+    list.addBoolean(false);
+    
+    assertEquals(false, (boolean) list.set(0, true));
+    assertEquals(true, list.getBoolean(0));
+
+    assertEquals(false, (boolean) list.set(1, false));
+    assertEquals(false, list.getBoolean(1));
+    
+    try {
+      list.set(-1, true);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+
+    try {
+      list.set(2, false);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+  }
+  
+  public void testSetInt() {
+    list.addBoolean(true);
+    list.addBoolean(true);
+    
+    assertEquals(true, list.setBoolean(0, false));
+    assertEquals(false, list.getBoolean(0));
+
+    assertEquals(true, list.setBoolean(1, false));
+    assertEquals(false, list.getBoolean(1));
+    
+    try {
+      list.setBoolean(-1, false);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+
+    try {
+      list.setBoolean(2, true);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+  }
+  
+  public void testAdd() {
+    assertEquals(0, list.size());
+
+    assertTrue(list.add(true));
+    assertEquals(asList(true), list);
+
+    assertTrue(list.add(false));
+    list.add(0, false);
+    assertEquals(asList(false, true, false), list);
+    
+    list.add(0, false);
+    list.add(0, true);
+    // Force a resize by getting up to 11 elements.
+    for (int i = 0; i < 6; i++) {
+      list.add(true);
+    }
+    assertEquals(asList(true, false, false, true, false, true, true, true, true, true, true), list);
+    
+    try {
+      list.add(-1, false);
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+    
+    try {
+      list.add(4, true);
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+  }
+  
+  public void testAddInt() {
+    assertEquals(0, list.size());
+
+    list.addBoolean(true);
+    assertEquals(asList(true), list);
+
+    list.addBoolean(false);
+    assertEquals(asList(true, false), list);
+  }
+  
+  public void testAddAll() {
+    assertEquals(0, list.size());
+
+    assertTrue(list.addAll(Collections.singleton(false)));
+    assertEquals(1, list.size());
+    assertEquals(false, (boolean) list.get(0));
+    assertEquals(false, list.getBoolean(0));
+    
+    assertTrue(list.addAll(asList(true, false, false, false, true)));
+    assertEquals(asList(false, true, false, false, false, true), list);
+    
+    assertTrue(list.addAll(TERTIARY_LIST));
+    assertEquals(asList(false, true, false, false, false, true, true, true, false), list);
+
+    assertFalse(list.addAll(Collections.<Boolean>emptyList()));
+    assertFalse(list.addAll(BooleanArrayList.emptyList()));
+  }
+  
+  public void testRemove() {
+    list.addAll(TERTIARY_LIST);
+    assertEquals(true, (boolean) list.remove(0));
+    assertEquals(asList(true, false), list);
+
+    assertTrue(list.remove(Boolean.TRUE));
+    assertEquals(asList(false), list);
+
+    assertFalse(list.remove(Boolean.TRUE));
+    assertEquals(asList(false), list);
+
+    assertEquals(false, (boolean) list.remove(0));
+    assertEquals(asList(), list);
+    
+    try {
+      list.remove(-1);
+      fail();
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+    
+    try {
+      list.remove(0);
+    } catch (IndexOutOfBoundsException e) {
+      // expected
+    }
+  }
+  
+  private void assertImmutable(BooleanArrayList list) {
+    if (list.contains(1)) {
+      throw new RuntimeException("Cannot test the immutability of lists that contain 1.");
+    }
+    
+    try {
+      list.add(false);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.add(0, true);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addAll(Collections.<Boolean>emptyList());
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addAll(Collections.singletonList(false));
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addAll(new BooleanArrayList());
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addAll(UNARY_LIST);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addAll(0, Collections.singleton(true));
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addAll(0, UNARY_LIST);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addAll(0, Collections.<Boolean>emptyList());
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.addBoolean(true);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.clear();
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+
+    try {
+      list.remove(1);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.remove(new Object());
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.removeAll(Collections.<Boolean>emptyList());
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.removeAll(Collections.singleton(1));
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.removeAll(UNARY_LIST);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.retainAll(Collections.<Boolean>emptyList());
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.retainAll(Collections.singleton(1));
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.retainAll(UNARY_LIST);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.set(0, true);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+    
+    try {
+      list.setBoolean(0, false);
+      fail();
+    } catch (UnsupportedOperationException e) {
+      // expected
+    }
+  }
+  
+  private static BooleanArrayList newImmutableBooleanArrayList(boolean... elements) {
+    BooleanArrayList list = new BooleanArrayList();
+    for (boolean element : elements) {
+      list.addBoolean(element);
+    }
+    list.makeImmutable();
+    return list;
+  }
+}