[Demonstration 1]

[Buggy Method]
@Test
public void testInsertWallpaper() {
    Context context = InstrumentationRegistry.getTargetContext();
    ContentValues contentValues = new ContentValues();
    contentValues.put(Wallpaper.COLUMN_NAME_WALLPAPER_ID, "id");
    contentValues.put(Wallpaper.COLUMN_NAME_TITLE, "title111");
    contentValues.put(Wallpaper.COLUMN_NAME_ATTRIBUTION, "yalin...");
    contentValues.put(Wallpaper.COLUMN_NAME_BYLINE, "byline111");
    contentValues.put(Wallpaper.COLUMN_NAME_IMAGE_URI, "xxx");
    contentValues.put(Wallpaper.COLUMN_NAME_ADD_DATE, System.currentTimeMillis());
    Uri uri = context.getContentResolver().insert(Wallpaper.CONTENT_URI, contentValues);
    try {
        Cursor cursor = context.getContentResolver().query(Wallpaper.CONTENT_LAST_WALLPAPER_URI, null, null, null, null);
        Assert.assertNotNull(uri);
        Assert.assertNotNull(cursor);
        Assert.assertTrue(cursor.getCount() == 1);
        if (cursor.moveToFirst()) {
            String title = cursor.getString(cursor.getColumnIndex(Wallpaper.COLUMN_NAME_TITLE));
            Assert.assertEquals(title, "title111");
        }
        cursor.close();
    } finally {
        if (uri != null) {
            int retVal = context.getContentResolver().delete(uri, null, null);
            Assert.assertEquals(retVal, 1);
        }
    }
}

[Buggy Hunk]
.query(Wallpaper.CONTENT_LAST_WALLPAPER_URI, null, null, null, null);

[Patch]
.query(Wallpaper.CONTENT_URI, null, null, null, null);

[Demonstration 2]

[Buggy Method]
@Before
public void before() throws Exception {
    this.service = Context.getService(FlagService.class);
}

[Buggy Hunk]
this.service = Context.getService(FlagService.class);

[Patch]
service = Context.getService(FlagService.class);

[Demonstration 3]

[Buggy Method]
public static TreeReader createTreeReader(TypeDescription readerType, SchemaEvolution evolution, boolean[] included, boolean skipCorrupt) throws IOException {
    TypeDescription fileType = evolution.getFileType(readerType);
    if (fileType == null || (included != null && !included[readerType.getId()])) {
        return new NullTreeReader(0);
    }
    TypeDescription.Category readerTypeCategory = readerType.getCategory();
    if (!fileType.equals(readerType) && (readerTypeCategory != TypeDescription.Category.STRUCT && readerTypeCategory != TypeDescription.Category.MAP && readerTypeCategory != TypeDescription.Category.LIST && readerTypeCategory != TypeDescription.Category.UNION)) {
        // We only convert complex children.
        return ConvertTreeReaderFactory.createConvertTreeReader(readerType, evolution, included, skipCorrupt);
    }
    switch(readerTypeCategory) {
        case BOOLEAN:
            return new BooleanTreeReader(fileType.getId());
        case BYTE:
            return new ByteTreeReader(fileType.getId());
        case DOUBLE:
            return new DoubleTreeReader(fileType.getId());
        case FLOAT:
            return new FloatTreeReader(fileType.getId());
        case SHORT:
            return new ShortTreeReader(fileType.getId());
        case INT:
            return new IntTreeReader(fileType.getId());
        case LONG:
            return new LongTreeReader(fileType.getId(), skipCorrupt);
        case STRING:
            return new StringTreeReader(fileType.getId());
        case CHAR:
            return new CharTreeReader(fileType.getId(), readerType.getMaxLength());
        case VARCHAR:
            return new VarcharTreeReader(fileType.getId(), readerType.getMaxLength());
        case BINARY:
            return new BinaryTreeReader(fileType.getId());
        case TIMESTAMP:
            return new TimestampTreeReader(fileType.getId(), skipCorrupt);
        case DATE:
            return new DateTreeReader(fileType.getId());
        case DECIMAL:
            return new DecimalTreeReader(fileType.getId(), readerType.getPrecision(), readerType.getScale());
        case STRUCT:
            return new StructTreeReader(fileType.getId(), readerType, evolution, included, skipCorrupt);
        case LIST:
            return new ListTreeReader(fileType.getId(), readerType, evolution, included, skipCorrupt);
        case MAP:
            return new MapTreeReader(fileType.getId(), readerType, evolution, included, skipCorrupt);
        case UNION:
            return new UnionTreeReader(fileType.getId(), readerType, evolution, included, skipCorrupt);
        default:
            throw new IllegalArgumentException("Unsupported type " + readerTypeCategory);
    }
}

[Buggy Hunk]
if (!fileType.equals(readerType) &&

[Patch]
if (!fileType.getCategory().equals(readerTypeCategory) &&