Added missing org.simantics.db.{tests,testing} plug-ins.

[simantics/platform.git] / tests / org.simantics.db.tests / src / org / simantics / db / tests / api / request / listening / DisposedListenerTest.java

diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/listening/DisposedListenerTest.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/listening/DisposedListenerTest.java
new file mode 100644 (file)
index 0000000..ee26b33
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/listening/DisposedListenerTest.java
@@ -0,0 +1,93 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.tests.api.request.listening;
+
+import java.util.concurrent.Semaphore;
+
+import org.junit.Test;
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.Session;
+import org.simantics.db.common.procedure.adapter.AsyncListenerAdapter;
+import org.simantics.db.procedure.AsyncProcedure;
+import org.simantics.db.request.AsyncRead;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.utils.DataContainer;
+
+public class DisposedListenerTest extends ExistingDatabaseTest {
+
+    /**
+     * Performs an asynchronous dummy graph request with a listener that is
+     * already disposed when the request is first performed.
+     * 
+     * <p>
+     * The expected outcome is that the request will complete normally, calling
+     * execute of the listener procedure once and only once.
+     * 
+     * <p>
+     * The outcome when this test was created was that QueryProcessor would
+     * crash internally with a NullPointerException.
+     * 
+     * This problem is fixed by: https://www.simulationsite.net/trac/simantics/changeset/13869
+     * 
+     * @throws Exception
+     */
+       @Test
+    public void testDisposedListener() throws Exception{
+        final Session session = getSession();
+
+        final Semaphore sem = new Semaphore(0);
+        final DataContainer<Throwable> exc = new DataContainer<Throwable>();
+
+        session.asyncRequest(new AsyncRead<Object>() {
+            @Override
+            public int getFlags() {
+                return 0;
+            }
+                   @Override
+                   public int threadHash() {
+                       return hashCode();
+                   }
+            @Override
+            public void perform(AsyncReadGraph graph, AsyncProcedure<Object> procedure) {
+                procedure.execute(graph, new Object());
+            }
+        }, new AsyncListenerAdapter<Object>() {
+            @Override
+            public boolean isDisposed() {
+                return true;
+            }
+            @Override
+            public void exception(AsyncReadGraph graph, Throwable t) {
+                System.out.println(getClass().getSimpleName() + ": exception:");
+                t.printStackTrace();
+                exc.set(t);
+                sem.release();
+            }
+            @Override
+            public void execute(AsyncReadGraph graph, Object result) {
+                if (DEBUG)
+                    System.out.println(getClass().getSimpleName() + ": execute: " + result);
+                sem.release();
+            }
+        });
+
+        sem.acquire();
+
+        Throwable t = exc.get();
+        if (t != null) {
+            if (t instanceof Exception)
+                throw (Exception) t;
+            else
+                throw new Exception(t);
+        }
+    }
+}