Add another 'unit test' for the interpreter.

This unit test shows that after a given number of run
of the same file, the error changes.
Unfortunately, this can not be automatically verified, since
the result is printed in the python error stream, and cannot be
redirected.

unitTesting/CMakeLists.txt

@@ -26,10 +26,19 @@ ADD_DEFINITIONS(${DYNAMIC_GRAPH_CFLAGS})
 
 
 SET(EXECUTABLE_NAME interpreter-test)
-
 ADD_EXECUTABLE(${EXECUTABLE_NAME} interpreter-test.cc)
 TARGET_LINK_LIBRARIES(${EXECUTABLE_NAME} dynamic-graph-python)
-TARGET_LINK_LIBRARIES(${EXECUTABLE_NAME} ${DYNAMIC_GRAPH_LIBRARIES} -lpthread -ldl  -lutil)
+ADD_TEST(${EXECUTABLE_NAME}  ${EXECUTABLE_NAME})
+
 
+## Test runfile
+SET(EXECUTABLE_NAME interpreter-test-runfile)
+ADD_EXECUTABLE(${EXECUTABLE_NAME} interpreter-test-runfile.cc)
+TARGET_LINK_LIBRARIES(${EXECUTABLE_NAME} dynamic-graph-python)
 ADD_TEST(${EXECUTABLE_NAME}  ${EXECUTABLE_NAME})
 
+ADD_CUSTOM_COMMAND(TARGET interpreter-test-runfile POST_BUILD
+  COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_SOURCE_DIR}/unitTesting/test_python_error.py
+  ${CMAKE_BINARY_DIR}/unitTesting
+)
+

unitTesting/interpreter-test-runfile.cc

+// The purpose of this unit test is to check the interpreter::runPythonFile method
+#include "dynamic-graph/python/interpreter.hh"
+
+int main(int argc, char ** argv)
+{
+  // execute numerous time the same file.
+  // While running 1025, we can notice a change in the error.
+  // unfortunately, it can not be shown using a redirection of the streams
+  int numTest = 1025;
+  if (argc > 1)
+    numTest = atoi(argv[1]);
+
+  dynamicgraph::python::Interpreter interp;
+
+  for (int i=0; i<numTest; ++i)
+  {
+    interp.runPythonFile("test_python_error.py");
+  }
+
+  return 0;
+}

unitTesting/test_python_error.py

+import sys, os
+
+pkgConfigPath = os.environ.get("PKG_CONFIG_PATH")
+if pkgConfigPath == None:
+  pkgConfigPath = ''
+pathList = re.split(':', pkgConfigPath)
+
+print pathList
+