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diff --git a/test/unit/expr/node_manager_white.h b/test/unit/expr/node_manager_white.h
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+/*********************                                                        */
+/** node_manager_white.h
+ ** Original author: mdeters
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 prototype.
+ ** Copyright (c) 2009, 2010  The Analysis of Computer Systems Group (ACSys)
+ ** Courant Institute of Mathematical Sciences
+ ** New York University
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.
+ **
+ ** White box testing of CVC4::NodeManager.
+ **/
+
+#include <cxxtest/TestSuite.h>
+
+#include <string>
+
+#include "expr/node_manager.h"
+#include "context/context.h"
+
+#include "util/rational.h"
+#include "util/integer.h"
+
+using namespace CVC4;
+using namespace CVC4::expr;
+using namespace CVC4::context;
+
+class NodeManagerWhite : public CxxTest::TestSuite {
+
+  Context* d_ctxt;
+  NodeManager* d_nm;
+  NodeManagerScope* d_scope;
+
+public:
+
+  void setUp() {
+    d_ctxt = new Context;
+    d_nm = new NodeManager(d_ctxt);
+    d_scope = new NodeManagerScope(d_nm);
+  }
+
+  void tearDown() {
+    delete d_scope;
+    delete d_nm;
+    delete d_ctxt;
+  }
+
+  void testMkConstInt() {
+    Integer i = "3";
+    Node n = d_nm->mkConst(i);
+    Node m = d_nm->mkConst(i);
+    TS_ASSERT_EQUALS(n.getId(), m.getId());
+  }
+};