[Demonstration 1]

[Buggy Method]
@Before
public void setUp() throws Exception {
    mRootAdapter = spy(new FakeAdapter(3));
    mChildAdapters = newArrayList(spy(new FakeAdapter(3)), spy(new FakeAdapter(3)), spy(new FakeAdapter(3)));
    mChildAdapterSupplier = spy(new TreeAdapter.ChildAdapterSupplier() {

        @NonNull
        @Override
        public PowerAdapter get(int position) {
            return mChildAdapters.get(position);
        }
    });
    mTreeAdapter = new TreeAdapter(mRootAdapter, mChildAdapterSupplier);
    mTreeAdapter.registerDataObserver(mObserver);
    mTreeAdapter.registerDataObserver(new VerifyingObserver(mTreeAdapter));
    mTreeAdapter.setAllExpanded(true);
    mParent = new FrameLayout(RuntimeEnvironment.application);
    mItemView = new View(RuntimeEnvironment.application);
}

[Buggy Hunk]
mChildAdapterSupplier = spy(new TreeAdapter.ChildAdapterSupplier() {

[Patch]
mChildAdapterSupplier = spy(new ChildAdapterSupplier() {

[Demonstration 2]

[Buggy Method]
public void testParseAcceptHeader() throws Exception {
    AcceptHeader acceptHeader;
    acceptHeader = AcceptHeader.parse("application/xdi+json;q=1,application/xdi+json;contexts=0;q=0.5,application/xdi+json;contexts=1;q=0.5,text/xdi;contexts=0;q=0.5,text/xdi;contexts=1;q=0.5,text/xdi;q=0.5");
    assertEquals(acceptHeader.getMimeTypes().size(), 6);
    assertEquals(acceptHeader.bestMimeType(true, false), XDIJSONReader.MIME_TYPE);
    acceptHeader = AcceptHeader.parse("text/xdi;q=1,application/xdi+json;contexts=0;q=0.5,application/xdi+json;contexts=1;q=0.5,application/xdi+json;q=0.5,text/xdi;contexts=0;q=0.5,text/xdi;contexts=1;q=0.5");
    assertEquals(acceptHeader.getMimeTypes().size(), 6);
    assertEquals(acceptHeader.bestMimeType(true, false), XDIDisplayReader.MIME_TYPE);
    acceptHeader = AcceptHeader.parse("application/xml;q=1.1,text/html,text/xdi;q=0.7,*/*;q=0.8");
    assertEquals(acceptHeader.getMimeTypes().size(), 4);
    assertEquals(acceptHeader.bestMimeType(false, false), new MimeType("application/xml"));
    assertEquals(acceptHeader.bestMimeType(true, false), new MimeType("text/xdi"));
    assertEquals(acceptHeader.bestMimeType(false, true), new MimeType("text/html"));
}

[Buggy Hunk]
assertEquals(acceptHeader.bestMimeType(true, false), XDIJSONReader.MIME_TYPE);

[Patch]
assertEquals(acceptHeader.bestMimeType(true, false), XDIJSONQuadReader.MIME_TYPE);

[Demonstration 3]

[Buggy Method]
@Before
public void setUp() {
    service = spy(InMemoryQueueService.class);
    messageBody = String.format("InMemeryQueueTest%s", System.currentTimeMillis());
    service.purgeQueue(QUEUE_NAME);
}

[Buggy Hunk]
service = spy(InMemoryQueueService.class);

[Patch]
service = InMemoryQueueService.getInstance();