diff --git a/dlib/test/CMakeLists.txt b/dlib/test/CMakeLists.txt
index e02c14722..003c747df 100644
--- a/dlib/test/CMakeLists.txt
+++ b/dlib/test/CMakeLists.txt
@@ -101,6 +101,7 @@ set (tests
    sockets2.cpp
    sockets.cpp
    sockstreambuf.cpp
+   sparse_vector.cpp
    stack.cpp
    static_map.cpp
    static_set.cpp
diff --git a/dlib/test/makefile b/dlib/test/makefile
index a81aa0e0e..6ff885f21 100644
--- a/dlib/test/makefile
+++ b/dlib/test/makefile
@@ -116,6 +116,7 @@ SRC += smart_pointers.cpp
 SRC += sockets2.cpp
 SRC += sockets.cpp
 SRC += sockstreambuf.cpp
+SRC += sparse_vector.cpp
 SRC += stack.cpp
 SRC += static_map.cpp
 SRC += static_set.cpp
diff --git a/dlib/test/sparse_vector.cpp b/dlib/test/sparse_vector.cpp
new file mode 100644
index 000000000..ebe3a071d
--- /dev/null
+++ b/dlib/test/sparse_vector.cpp
@@ -0,0 +1,67 @@
+// Copyright (C) 2012  Davis E. King (davis@dlib.net)
+// License: Boost Software License   See LICENSE.txt for the full license.
+
+#include "tester.h"
+#include <dlib/svm.h>
+#include <dlib/rand.h>
+#include <dlib/string.h>
+#include <vector>
+#include <sstream>
+#include <ctime>
+
+namespace  
+{
+    using namespace test;
+    using namespace dlib;
+    using namespace std;
+    using namespace dlib::sparse_vector;
+    dlib::logger dlog("test.sparse_vector");
+
+
+    class sparse_vector_tester : public tester
+    {
+    public:
+        sparse_vector_tester (
+        ) :
+            tester (
+                "test_sparse_vector",       // the command line argument name for this test
+                "Run tests on the sparse_vector routines.", // the command line argument description
+                0                     // the number of command line arguments for this test
+            )
+        {
+        }
+
+
+        void perform_test (
+        )
+        {
+            std::map<unsigned int, double> v;
+            v[4] = 8;
+            v[2] = -4;
+            v[9] = 10;
+
+            DLIB_TEST(max(v) == 10);
+            DLIB_TEST(min(v) == -4);
+
+            v.clear();
+            v[4] = 8;
+            v[9] = 10;
+            DLIB_TEST(max(v) == 10);
+            DLIB_TEST(min(v) == 0);
+
+
+            v.clear();
+            v[4] = -9;
+            v[9] = -4;
+            DLIB_TEST(max(v) == 0);
+            DLIB_TEST(min(v) == -9);
+
+        }
+    };
+
+    sparse_vector_tester a;
+
+}
+
+
+