- added cppunit into build system and started writing some unit tests (requires new dependency cppunit)

source/tests/test_runner.cpp

@@ -0,0 +1,23 @@
+#include <cppunit/CompilerOutputter.h>
+#include <cppunit/extensions/TestFactoryRegistry.h>
+#include <cppunit/ui/text/TestRunner.h>
+
+
+int main(int argc, char* argv[])
+{
+  // Get the top level suite from the registry
+  CppUnit::Test *suite = CppUnit::TestFactoryRegistry::getRegistry().makeTest();
+
+  // Adds the test to the list of test to run
+  CppUnit::TextUi::TestRunner runner;
+  runner.addTest( suite );
+
+  // Change the default outputter to a compiler error format outputter
+  runner.setOutputter( new CppUnit::CompilerOutputter( &runner.result(),
+                                                       std::cerr ) );
+  // Run the tests.
+  bool wasSucessful = runner.run();
+
+  // Return error code 1 if the one of test failed.
+  return wasSucessful ? 0 : 1;
+}