Add unit test for ConcurrentMap serialization

gtsam/base/tests/testSerializationBase.cpp

@@ -18,6 +18,7 @@
 
 #include <gtsam/inference/Key.h>
 
+#include <gtsam/base/ConcurrentMap.h>
 #include <gtsam/base/Matrix.h>
 #include <gtsam/base/MatrixSerialization.h>
 #include <gtsam/base/Vector.h>
@@ -106,6 +107,39 @@ TEST (Serialization, matrix_vector) {
   EXPECT(equalityBinary<Matrix>((Matrix(2, 2) << 1.0, 2.0, 3.0, 4.0).finished()));
 }
 
+/* ************************************************************************* */
+TEST (Serialization, ConcurrentMap) {
+
+  ConcurrentMap<int, std::string> map;
+
+  map.insert(make_pair(1, "apple"));
+  map.insert(make_pair(2, "banana"));
+
+  std::string binaryPath = "saved_map.dat";
+    try {
+    std::ofstream outputStream(binaryPath);
+    boost::archive::binary_oarchive outputArchive(outputStream);
+    outputArchive << map;
+  } catch(...) {
+    EXPECT(false);
+  }
+
+  // Verify that the existing map contents are replaced by the archive data
+  ConcurrentMap<int, std::string> mapFromDisk;
+  mapFromDisk.insert(make_pair(3, "clam"));
+  EXPECT(mapFromDisk.exists(3));
+  try {
+    std::ifstream ifs(binaryPath);
+    boost::archive::binary_iarchive inputArchive(ifs);
+    inputArchive >> mapFromDisk;
+  } catch(...) {
+    EXPECT(false);
+  }
+  EXPECT(mapFromDisk.exists(1));
+  EXPECT(mapFromDisk.exists(2));
+  EXPECT(!mapFromDisk.exists(3));
+}
+
 /* ************************************************************************* */