2 files changed, 38 insertions, 0 deletions
diff --git a/test/unit/expr/expr_black.h b/test/unit/expr/expr_black.h
new file mode 100644
index 000000000..97746d1c4
--- /dev/null
+++ b/test/unit/expr/expr_black.h
@@ -0,0 +1,19 @@
+/* Black box testing of CVC4::Expr. */
+
+#include <cxxtest/TestSuite.h>
+
+#include "cvc4_expr.h"
+
+using namespace CVC4;
+
+class ExprBlack : public CxxTest::TestSuite {
+public:
+
+  void testNull() {
+    Expr::s_null;
+  }
+
+  void testCopyCtor() {
+    Expr e(Expr::s_null);
+  }
+};
diff --git a/test/unit/expr/expr_white.h b/test/unit/expr/expr_white.h
new file mode 100644
index 000000000..b6bfdd394
--- /dev/null
+++ b/test/unit/expr/expr_white.h
@@ -0,0 +1,19 @@
+/* White box testing of CVC4::Expr. */
+
+#include <cxxtest/TestSuite.h>
+
+#include "cvc4_expr.h"
+
+using namespace CVC4;
+
+class ExprWhite : public CxxTest::TestSuite {
+public:
+
+  void testNull() {
+    Expr::s_null;
+  }
+
+  void testCopyCtor() {
+    Expr e(Expr::s_null);
+  }
+};