--- /dev/null 2017-05-22 14:23:17.000000000 -0700 +++ new/test/javax/imageio/plugins/gif/PrepareWriteSequenceTest.java 2017-05-22 14:23:17.000000000 -0700 @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/* + * @test + * @bug 6284538 + * @summary Test verifies whether IllegalStateException is thrown if the output + * stream have not set to the GIF image writer instance + */ + +import java.io.IOException; + +import javax.imageio.ImageIO; +import javax.imageio.ImageWriteParam; +import javax.imageio.ImageWriter; +import javax.imageio.metadata.IIOMetadata; + +public class PrepareWriteSequenceTest { + public static void main(String[] args) throws IOException { + String format = "GIF"; + ImageWriter writer = ImageIO.getImageWritersByFormatName(format).next(); + + ImageWriteParam param = writer.getDefaultWriteParam(); + + IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(param); + + boolean gotException = false; + try { + writer.prepareWriteSequence(streamMetadata); + } catch (IllegalStateException e) { + gotException = true; + System.out.println("Test passed."); + e.printStackTrace(System.out); + } + + if (!gotException) { + throw new RuntimeException("Test failed."); + } + } +}