diff --git a/Triangulation/test/Triangulation/test_triangulation.cpp b/Triangulation/test/Triangulation/test_triangulation.cpp
index 4e225333054..8e3f31d5402 100644
--- a/Triangulation/test/Triangulation/test_triangulation.cpp
+++ b/Triangulation/test/Triangulation/test_triangulation.cpp
@@ -15,6 +15,8 @@ int main()
 #include <vector>
 #include <string>
 #include <fstream>
+#include <sstream>
+#include <CGAL/IO/Triangulation_off_ostream.h>
 
 using namespace std;
 
@@ -79,11 +81,20 @@ void test(const int d, const string & type, int N)
     assert( tri.number_of_vertices() == tri2.number_of_vertices() );
     assert( tri.number_of_full_cells() == tri2.number_of_full_cells() );
 
+    std::stringstream buffer;
+    buffer << tri;
+
     // CLEAR
     tri.clear();
     assert(-1==tri.current_dimension());
     assert(tri.empty());
     assert( tri.is_valid() );
+
+    buffer >> tri;
+    assert( tri.current_dimension() == tri2.current_dimension() );
+    assert( tri.maximal_dimension() == tri2.maximal_dimension() );
+    assert( tri.number_of_vertices() == tri2.number_of_vertices() );
+    assert( tri.number_of_full_cells() == tri2.number_of_full_cells() );
 }
 
 /*#define test_static(DIM) {  \