test/jdk/javax/imageio/ImageReadParamPasses.java
changeset 47216 71c04702a3d5
parent 45351 f7f615a3aaff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/javax/imageio/ImageReadParamPasses.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2001, 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 4429365
+ * @summary Checks that ImageReadParam.setSourceProgressivePasses handles
+ *          overflow correctly
+ */
+
+import javax.imageio.ImageReadParam;
+
+public class ImageReadParamPasses {
+
+    private static final int maxint = Integer.MAX_VALUE;
+
+    private static void expect(int i, int j) {
+        if (i != j) {
+            throw new RuntimeException("Expected " + i + ", got " + j);
+        }
+    }
+
+    private static void checkForIAE(int minPass, int numPasses) {
+        ImageReadParam param = new ImageReadParam();
+
+        boolean gotIAE = false;
+        try {
+            param.setSourceProgressivePasses(minPass, numPasses);
+        } catch (IllegalArgumentException iae) {
+            gotIAE = true;
+        }
+        if (!gotIAE) {
+            throw new RuntimeException("Failed to get IAE for wraparound!");
+        }
+    }
+
+    private static void test(int minPass, int numPasses) {
+        ImageReadParam param = new ImageReadParam();
+
+        param.setSourceProgressivePasses(minPass, numPasses);
+        expect(param.getSourceMinProgressivePass(), minPass);
+        expect(param.getSourceNumProgressivePasses(), numPasses);
+
+        int maxPass = numPasses == maxint ? maxint : minPass + numPasses - 1;
+        expect(param.getSourceMaxProgressivePass(), maxPass);
+    }
+
+    public static void main(String[] args) {
+        // Typical case
+        test(17, 30);
+
+        // Read all passes
+        test(0, maxint);
+
+        // Start at pass 17, continue indefinitely
+        test(17, maxint);
+
+        // Start at pass maxint - 10, continue indefinitely
+        test(maxint - 10, maxint);
+
+        // Start at pass maxint - 10, go up to maxint - 1
+        test(maxint - 10, 10);
+
+        // Start at pass maxint - 10, go up to maxint
+        test(maxint - 10, 11);
+
+        // Start at maxint, continue indefinitely :-)
+        test(maxint, maxint);
+
+        // Start at maxint, go up to maxint
+        test(maxint, 1);
+
+        // Check that an IllegalArgumentException is thrown if
+        // wraparound occurs
+        checkForIAE(maxint, 2);
+        checkForIAE(maxint - 5, 10);
+        checkForIAE(10, maxint - 5);
+        checkForIAE(maxint - 1000, maxint - 1000);
+        checkForIAE(maxint - 1, maxint - 1);
+    }
+}