PR895: IcedTea-Web searches for missing classes on each loadClass or findClass

1 files changed, 142 insertions, 0 deletions

diff --git a/tests/netx/unit/net/sourceforge/jnlp/runtime/CodeBaseClassLoaderTest.java b/tests/netx/unit/net/sourceforge/jnlp/runtime/CodeBaseClassLoaderTest.java
new file mode 100644
index 0000000..f2ebc0e
--- /dev/null
+++ b/tests/netx/unit/net/sourceforge/jnlp/runtime/CodeBaseClassLoaderTest.java
@@ -0,0 +1,142 @@
+/* CodeBaseClassLoaderTest.java
+   Copyright (C) 2012 Red Hat, Inc.
+
+This file is part of IcedTea.
+
+IcedTea is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 2.
+
+IcedTea 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with IcedTea; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.
+*/
+
+package net.sourceforge.jnlp.runtime;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.net.URL;
+import java.util.Locale;
+
+import net.sourceforge.jnlp.JNLPFile;
+import net.sourceforge.jnlp.LaunchException;
+import net.sourceforge.jnlp.ParseException;
+import net.sourceforge.jnlp.ResourcesDesc;
+import net.sourceforge.jnlp.SecurityDesc;
+import net.sourceforge.jnlp.runtime.JNLPClassLoader;
+import net.sourceforge.jnlp.runtime.JNLPClassLoader.CodeBaseClassLoader;
+
+import org.junit.Test;
+
+public class CodeBaseClassLoaderTest {
+
+    @Test
+    public void testResourceLoadSuccessCaching() throws LaunchException, ClassNotFoundException, IOException, ParseException {
+        final URL JAR_URL = new URL("http://icedtea.classpath.org/netx/about.jar");
+        final URL CODEBASE_URL = new URL("http://icedtea.classpath.org/netx/");
+
+        JNLPFile dummyJnlpFile = new JNLPFile() {
+            @Override
+            public ResourcesDesc getResources() {
+                return new ResourcesDesc(null, new Locale[0], new String[0], new String[0]);
+            }
+
+            @Override
+            public URL getCodeBase() {
+                return CODEBASE_URL;
+            }
+
+            @Override
+            public SecurityDesc getSecurity() {
+                return new SecurityDesc(null, SecurityDesc.SANDBOX_PERMISSIONS, null);
+            }
+        };
+
+        JNLPClassLoader parent = new JNLPClassLoader(dummyJnlpFile, null);
+        CodeBaseClassLoader classLoader = new CodeBaseClassLoader(new URL[] { JAR_URL, CODEBASE_URL }, parent);
+
+        long startTime, stopTime;
+
+        startTime = System.nanoTime();
+        classLoader.findResource("net/sourceforge/jnlp/about/Main.class");
+        stopTime = System.nanoTime();
+        long timeOnFirstTry = stopTime - startTime;
+        System.out.println(timeOnFirstTry);
+
+        startTime = System.nanoTime();
+        classLoader.findResource("net/sourceforge/jnlp/about/Main.class");
+        stopTime = System.nanoTime();
+        long timeOnSecondTry = stopTime - startTime;
+        System.out.println(timeOnSecondTry);
+
+        assertTrue(timeOnSecondTry < (timeOnFirstTry / 10));
+    }
+
+    @Test
+    public void testResourceLoadFailureCaching() throws LaunchException, ClassNotFoundException, IOException, ParseException {
+        final URL JAR_URL = new URL("http://icedtea.classpath.org/netx/about.jar");
+        final URL CODEBASE_URL = new URL("http://icedtea.classpath.org/netx/");
+
+        JNLPFile dummyJnlpFile = new JNLPFile() {
+            @Override
+            public ResourcesDesc getResources() {
+                return new ResourcesDesc(null, new Locale[0], new String[0], new String[0]);
+            }
+
+            @Override
+            public URL getCodeBase() {
+                return CODEBASE_URL;
+            }
+
+            @Override
+            public SecurityDesc getSecurity() {
+                return new SecurityDesc(null, SecurityDesc.SANDBOX_PERMISSIONS, null);
+            }
+        };
+
+        JNLPClassLoader parent = new JNLPClassLoader(dummyJnlpFile, null);
+        CodeBaseClassLoader classLoader = new CodeBaseClassLoader(new URL[] { JAR_URL, CODEBASE_URL }, parent);
+
+        long startTime, stopTime;
+
+        startTime = System.nanoTime();
+        classLoader.findResource("net/sourceforge/jnlp/about/Main_FOO_.class");
+        stopTime = System.nanoTime();
+        long timeOnFirstTry = stopTime - startTime;
+        System.out.println(timeOnFirstTry);
+
+        startTime = System.nanoTime();
+        classLoader.findResource("net/sourceforge/jnlp/about/Main_FOO_.class");
+        stopTime = System.nanoTime();
+        long timeOnSecondTry = stopTime - startTime;
+        System.out.println(timeOnSecondTry);
+
+        assertTrue(timeOnSecondTry < (timeOnFirstTry / 10));
+    }
+
+}