--- /dev/null	2017-05-19 18:25:49.000000000 -0700
+++ new/test/javax/imageio/plugins/gif/AnimationTest.java	2017-05-19 18:25:48.000000000 -0700
@@ -0,0 +1,168 @@
+/*
+ * 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 4339415
+ * @summary Tests that GIF writer plugin writes image sequences correctly
+ */
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.image.BufferedImage;
+import java.awt.image.IndexColorModel;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.IIOImage;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReader;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.stream.ImageOutputStream;
+
+public class AnimationTest {
+
+    BufferedImage img = null;
+    int x, y;
+    int w, h;
+
+    protected static String fname = "animtest.gif";
+
+    public AnimationTest() {
+        w = h = 100;
+    }
+
+    private void initFrame() {
+        if (img != null) {
+            return;
+        }
+        byte r[] = new byte[256];
+        byte g[] = new byte[256];
+        byte b[] = new byte[256];
+
+        for (int i = 0; i < 256; i++) {
+            r[i] = g[i] = b[i] = (byte)0x00;
+        }
+        r[0] = (byte)0x00; g[0] = (byte)0x00; b[0] = (byte)0x00;
+        r[1] = (byte)0xFF; g[1] = (byte)0xFF; b[1] = (byte)0xFF;
+        r[2] = (byte)0xFF; g[3] = (byte)0xFF; b[4] = (byte)0xFF;
+
+        IndexColorModel icm = new IndexColorModel(8, 256,
+                                                  r, g, b);
+
+        img = new BufferedImage(w, h,
+                                BufferedImage.TYPE_BYTE_INDEXED,
+                                icm);
+    }
+
+    private BufferedImage createNextFrame() {
+        Graphics g = img.createGraphics();
+        g.setColor(Color.white);
+        g.fillRect(0, 0, w, h);
+
+        g.setColor(Color.red);
+        g.drawLine(x, 0, x, h);
+
+        g.setColor(Color.blue);
+        g.drawLine(0, y, w, y);
+
+        x += 2;
+        y += 2;
+
+        x %= w;
+        y %= h;
+
+        return img;
+    }
+
+    ImageWriter writer = null;
+
+    private ImageWriter initWriter() throws IOException {
+        ImageOutputStream ios =
+            ImageIO.createImageOutputStream(new File(fname));
+        writer = ImageIO.getImageWritersByFormatName("GIF").next();
+
+        writer.setOutput(ios);
+
+        return writer;
+    }
+
+    public static void main(String[] args) {
+        try {
+            AnimationTest t = new AnimationTest();
+            t.initFrame();
+
+            ImageWriter w = t.initWriter();
+
+            ImageWriteParam p = w.getDefaultWriteParam();
+
+            IIOMetadata streamMetadata = w.getDefaultStreamMetadata(p);
+
+            w.prepareWriteSequence(streamMetadata);
+
+            for (int i = 0; i < 50; i++) {
+                BufferedImage f = t.createNextFrame();
+
+                ImageTypeSpecifier type = new ImageTypeSpecifier(f);
+
+                IIOMetadata m = w.getDefaultImageMetadata(type, p);
+
+                w.writeToSequence(new IIOImage(f, null, m), p);
+            }
+            w.endWriteSequence();
+
+            t.checkAnimation();
+        } catch (Exception e) {
+            throw new RuntimeException("Test failed.", e);
+        }
+    }
+
+    protected void checkAnimation() throws IOException {
+        ImageReader r = ImageIO.getImageReadersByFormatName("GIF").next();
+        r.setInput(ImageIO.createImageInputStream(new File(fname)));
+
+        int n = r.getNumImages(true);
+        for (int i = 0; i < n; i++) {
+            BufferedImage f = r.read(i);
+            checkFrame(i, f);
+        }
+        System.out.println("Test passed.");
+    }
+
+    protected void checkFrame(int i, BufferedImage f) {
+        int x = 2 * i + 1;
+        for (int y = 0; y < h; y++) {
+            int argb = f.getRGB(x, y);
+            if (argb != 0xffffffff && !(argb == 0xff0000ff && y == 2 * i)) {
+                throw new RuntimeException("Test failed - bad frame");
+            }
+            argb = f.getRGB(y, x);
+            if (argb != 0xffffffff && !(argb == 0xffff0000 && y == 2 * i)) {
+                throw new RuntimeException("Test failed - bad frame");
+            }
+        }
+    }
+}