diff --git a/tools/ping/client/statistics-collector.hpp b/tools/ping/client/statistics-collector.hpp
index 685ff1f..76278db 100644
--- a/tools/ping/client/statistics-collector.hpp
+++ b/tools/ping/client/statistics-collector.hpp
@@ -64,6 +64,13 @@
   StatisticsCollector(Ping& ping, const Options& options);
 
   /**
+   * Returns ping statistics as structure
+   */
+  Statistics
+  computeStatistics();
+
+PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+  /**
    * Called on ping response received
    * @param rtt round trip time
    */
@@ -76,12 +83,6 @@
   void
   recordTimeout();
 
-  /**
-   * Returns ping statistics as structure
-   */
-  Statistics
-  computeStatistics();
-
 private:
   Ping& m_ping;
   const Options& m_options;
diff --git a/tools/ping/wscript b/tools/ping/wscript
index 575e395..3e6755d 100644
--- a/tools/ping/wscript
+++ b/tools/ping/wscript
@@ -2,16 +2,28 @@
 top = '../..'
 
 def build(bld):
-    bld.program(
-        features='cxx',
-        target='../../bin/ndnping',
-        source=bld.path.ant_glob('client/*.cpp'),
-        use='core-objects',
-        )
 
-    bld.program(
-        features='cxx',
+    bld(features='cxx',
+        name='ping-client-objects',
+        source=bld.path.ant_glob('client/*.cpp', excl='client/ndn-ping.cpp'),
+        use='core-objects')
+
+    bld(features='cxx cxxprogram',
+        target='../../bin/ndnping',
+        source='client/ndn-ping.cpp',
+        use='ping-client-objects')
+
+    bld(features='cxx',
+        name='ping-server-objects',
+        source=bld.path.ant_glob('server/*.cpp', excl='server/ndn-ping-server.cpp'),
+        use='core-objects')
+
+    bld(features='cxx cxxprogram',
         target='../../bin/ndnpingserver',
-        source=bld.path.ant_glob('server/*.cpp'),
-        use='core-objects',
-        )
+        source='server/ndn-ping-server.cpp',
+        use='ping-server-objects')
+
+    ## (for unit tests)
+
+    bld(name='ping-objects',
+        use='ping-client-objects ping-server-objects')