diff --git a/tests/cmcm/CMakeLists.txt b/tests/cmcm/CMakeLists.txt
index a1a9678..41b28e8 100644
--- a/tests/cmcm/CMakeLists.txt
+++ b/tests/cmcm/CMakeLists.txt
@@ -11,6 +11,6 @@ pmm(CMakeCM ROLLING)
 
 include(cotire)
 
-add_executable(dummy-program main.cpp)
+add_executable(dummy-program main.cpp example.cpp log.cpp log.h example.h)
 
 cotire(dummy-program)
diff --git a/tests/cmcm/example.cpp b/tests/cmcm/example.cpp
new file mode 100644
index 0000000..a857315
--- /dev/null
+++ b/tests/cmcm/example.cpp
@@ -0,0 +1,24 @@
+// cotire example project
+
+#include "example.h"
+
+#ifndef NDEBUG
+#include <algorithm>
+#include <iterator>
+#endif
+
+namespace example {
+
+std::string get_message() {
+	char msg_chrs[] = { 'C', 'o', 't', 'i', 'r', 'e', 'd', '!' };
+#ifdef NDEBUG
+	return std::string(&msg_chrs[0], &msg_chrs[sizeof(msg_chrs)]);
+#else
+	std::string msg;
+	msg.reserve(sizeof(msg_chrs));
+	std::copy(msg_chrs, msg_chrs + sizeof(msg_chrs), std::back_inserter(msg));
+	return msg;
+#endif
+}
+
+}
diff --git a/tests/cmcm/example.h b/tests/cmcm/example.h
new file mode 100644
index 0000000..0fe3e23
--- /dev/null
+++ b/tests/cmcm/example.h
@@ -0,0 +1,10 @@
+// cotire example project
+
+#include <string>
+
+namespace example {
+
+std::string get_message();
+
+}
+
diff --git a/tests/cmcm/log.cpp b/tests/cmcm/log.cpp
new file mode 100644
index 0000000..5294adb
--- /dev/null
+++ b/tests/cmcm/log.cpp
@@ -0,0 +1,17 @@
+// cotire example project
+
+#include "log.h"
+
+#include <iostream>
+
+namespace logging {
+
+void error(const std::string& msg) {
+	std::cerr << msg << std::endl;
+}
+
+void info(const std::string& msg) {
+	std::cout << msg << std::endl;
+}
+
+}
diff --git a/tests/cmcm/log.h b/tests/cmcm/log.h
new file mode 100644
index 0000000..a6ce24a
--- /dev/null
+++ b/tests/cmcm/log.h
@@ -0,0 +1,10 @@
+// cotire example project
+
+#include <string>
+
+namespace logging {
+
+void error(const std::string& msg);
+void info(const std::string& msg);
+
+}
diff --git a/tests/cmcm/main.cpp b/tests/cmcm/main.cpp
index 2a9ace7..2ea1af6 100644
--- a/tests/cmcm/main.cpp
+++ b/tests/cmcm/main.cpp
@@ -1,8 +1,12 @@
-#include <iostream>
-using namespace std;
+// cotire example project main
+
+#include <string>
+
+#include "example.h"
+#include "log.h"
 
 int main()
 {
-    cout << "Hello, World!";
-    return 0;
+	std::string msg = example::get_message();
+	logging::info(msg);
 }