--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/tools/TruffleToolTest.java	Tue Jan 27 20:27:25 2015 -0800
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2015, 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.test.tools;
+
+import static org.junit.Assert.*;
+
+import org.junit.*;
+
+import com.oracle.truffle.api.instrument.*;
+
+/**
+ * Test the basic life cycle properties shared by all instances of {@link TruffleTool}.
+ */
+public class TruffleToolTest {
+
+    @Test
+    public void testEmptyLifeCycle() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        assertFalse(tool.isEnabled());
+        tool.install();
+        assertTrue(tool.isEnabled());
+        tool.reset();
+        assertTrue(tool.isEnabled());
+        tool.setEnabled(false);
+        assertFalse(tool.isEnabled());
+        tool.reset();
+        assertFalse(tool.isEnabled());
+        tool.setEnabled(true);
+        assertTrue(tool.isEnabled());
+        tool.reset();
+        assertTrue(tool.isEnabled());
+        tool.dispose();
+        assertFalse(tool.isEnabled());
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testNotYetInstalled1() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.reset();
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testNotYetInstalled2() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.setEnabled(true);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testNotYetInstalled3() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.dispose();
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testAlreadyInstalled() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.install();
+        tool.install();
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testAlreadyDisposed1() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.install();
+        tool.dispose();
+        tool.install();
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testAlreadyDisposed2() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.install();
+        tool.dispose();
+        tool.reset();
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testAlreadyDisposed3() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.install();
+        tool.dispose();
+        tool.setEnabled(true);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testAlreadyDisposed4() {
+        final DummyTruffleTool tool = new DummyTruffleTool();
+        tool.install();
+        tool.dispose();
+        tool.dispose();
+    }
+
+    private static final class DummyTruffleTool extends TruffleTool {
+
+        @Override
+        protected boolean internalInstall() {
+            return true;
+        }
+
+        @Override
+        protected void internalReset() {
+        }
+
+        @Override
+        protected void internalDispose() {
+        }
+
+    }
+}