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

[simantics/platform.git] / tests / org.simantics.db.tests / src / org / simantics / db / tests / api / write / request / WriteCallbackFailureTest.java

diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/write/request/WriteCallbackFailureTest.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/write/request/WriteCallbackFailureTest.java
new file mode 100644 (file)
index 0000000..fff066a
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/api/write/request/WriteCallbackFailureTest.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * 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.write.request;
+
+import java.util.concurrent.Semaphore;
+
+import org.junit.Test;
+import org.simantics.db.Resource;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.layer0.Layer0;
+import org.simantics.utils.datastructures.Callback;
+
+/**
+ * Checks that unexpected write callback failures do not crash the session and
+ * that the write request results were correctly committed.
+ * 
+ * @author Tuukka Lehtonen
+ */
+public class WriteCallbackFailureTest extends ExistingDatabaseTest {
+
+    private static final String AN_ENTITY = "An entity";
+    Resource written;
+
+       @Test
+    public void testFailingWriteCallback() throws DatabaseException{
+        final Semaphore sem = new Semaphore(0);
+
+        getSession().asyncRequest(new WriteRequest() {
+            @Override
+            public void perform(WriteGraph graph) throws DatabaseException {
+                Layer0 b = Layer0.getInstance(graph);
+                Resource test = graph.newResource();
+                graph.claim(test, b.InstanceOf, null, b.Entity);
+                Resource name = graph.newResource();
+                graph.claim(name, b.InstanceOf, null, b.String);
+                graph.claimValue(name, AN_ENTITY);
+                graph.claim(test, b.HasName, name);
+
+                written = test;
+            }
+        }, new Callback<DatabaseException>() {
+            @Override
+            public void run(DatabaseException parameter) {
+                try {
+                    throw new NullPointerException("intentional failure");
+                } finally {
+                    sem.release();
+                }
+            }
+        });
+
+        try {
+            sem.acquire();
+        } catch (InterruptedException e) {
+            throw new DatabaseException(e);
+        }
+
+        // This will block until the previous request has finished.
+        getSession().syncRequest(new WriteRequest() {
+            @Override
+            public void perform(WriteGraph graph) throws DatabaseException {
+                Layer0 b = Layer0.getInstance(graph);
+                // Ensure that the previously written data exists.
+                assertTrue(graph.hasStatement(written, b.InstanceOf, b.Entity));
+                Resource name = graph.getSingleObject(written, b.HasName);
+                assertTrue(graph.hasStatement(name, b.InstanceOf, b.String));
+                assertTrue(graph.hasStatement(written, b.HasName, name));
+                Object value = graph.getValue(name);
+                assertTrue(value.equals(AN_ENTITY));
+            }
+        });
+    }
+
+}