--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/processor/LanguageRegistrationTest.java	Mon May 25 12:26:53 2015 +0200
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+package com.oracle.truffle.api.dsl.test.processor;
+
+import com.oracle.truffle.api.TruffleLanguage;
+import com.oracle.truffle.api.dsl.ExpectError;
+import com.oracle.truffle.api.source.Source;
+import java.io.IOException;
+
+public class LanguageRegistrationTest {
+
+    @ExpectError("Registered language class must be public")
+    @TruffleLanguage.Registration(name = "myLang", mimeType = "text/x-my")
+    private static final class MyLang {
+    }
+
+    @ExpectError("Registered language inner-class must be static")
+    @TruffleLanguage.Registration(name = "myLangNonStatic", mimeType = "text/x-my")
+    public final class MyLangNonStatic {
+    }
+
+    @ExpectError("Registered language class must subclass TruffleLanguage")
+    @TruffleLanguage.Registration(name = "myLang", mimeType = "text/x-my")
+    public static final class MyLangNoSubclass {
+    }
+
+    @ExpectError("Language must have a public constructor accepting TruffleLanguage.Env as parameter")
+    @TruffleLanguage.Registration(name = "myLangNoCnstr", mimeType = "text/x-my")
+    public static final class MyLangWrongConstr extends TruffleLanguage {
+        private MyLangWrongConstr() {
+            super(null);
+        }
+
+        @Override
+        protected Object eval(Source code) throws IOException {
+            return null;
+        }
+
+        @Override
+        protected Object findExportedSymbol(String globalName) {
+            return null;
+        }
+
+        @Override
+        protected Object getLanguageGlobal() {
+            return null;
+        }
+
+        @Override
+        protected boolean isObjectOfLanguage(Object object) {
+            return false;
+        }
+    }
+
+    @ExpectError("Language must have a public constructor accepting TruffleLanguage.Env as parameter")
+    @TruffleLanguage.Registration(name = "myLangNoCnstr", mimeType = "text/x-my")
+    public static final class MyLangNoConstr extends TruffleLanguage {
+        public MyLangNoConstr() {
+            super(null);
+        }
+
+        @Override
+        protected Object eval(Source code) throws IOException {
+            return null;
+        }
+
+        @Override
+        protected Object findExportedSymbol(String globalName) {
+            return null;
+        }
+
+        @Override
+        protected Object getLanguageGlobal() {
+            return null;
+        }
+
+        @Override
+        protected boolean isObjectOfLanguage(Object object) {
+            return false;
+        }
+    }
+
+    @TruffleLanguage.Registration(name = "myLangGood", mimeType = "text/x-my")
+    public static final class MyLangGood extends TruffleLanguage {
+        public MyLangGood(TruffleLanguage.Env env) {
+            super(env);
+        }
+
+        @Override
+        protected Object eval(Source code) throws IOException {
+            return null;
+        }
+
+        @Override
+        protected Object findExportedSymbol(String globalName) {
+            return null;
+        }
+
+        @Override
+        protected Object getLanguageGlobal() {
+            return null;
+        }
+
+        @Override
+        protected boolean isObjectOfLanguage(Object object) {
+            return false;
+        }
+    }
+}