test sparse vector serialization

utils/sv_test.cc

@@ -1,7 +1,12 @@
 #define BOOST_TEST_MODULE WeightsTest
 #include <boost/test/unit_test.hpp>
 #include <boost/test/floating_point_comparison.hpp>
+#include <boost/archive/text_oarchive.hpp>
+#include <boost/archive/text_iarchive.hpp>
+#include <sstream>
+#include <string>
 #include "sparse_vector.h"
+#include "fdict.h"
 
 using namespace std;
 
@@ -33,3 +38,29 @@ BOOST_AUTO_TEST_CASE(Division) {
   x /= -1;
   BOOST_CHECK(x == y);
 }
+
+BOOST_AUTO_TEST_CASE(Serialization) {
+  string arc;
+  FD::dict_.clear();
+  {
+    SparseVector<double> x;
+    x.set_value(FD::Convert("Feature1"), 1.0);
+    x.set_value(FD::Convert("Pi"), 3.14);
+    ostringstream os;
+    boost::archive::text_oarchive oa(os);
+    oa << x;
+    arc = os.str();
+  }
+  FD::dict_.clear();
+  FD::Convert("SomeNewString");
+  {
+    SparseVector<double> x;
+    istringstream is(arc);
+    boost::archive::text_iarchive ia(is);
+    ia >> x;
+    cerr << x << endl;
+    BOOST_CHECK_CLOSE(x.get(FD::Convert("Pi")), 3.14, 1e-9);
+    BOOST_CHECK_CLOSE(x.get(FD::Convert("Feature1")), 1.0, 1e-9);
+  }
+}
+