[Python][Tests] ensure oscillator loads fine

fix #17

CMakeLists.txt

@@ -84,7 +84,7 @@ IF(NOT INSTALL_PYTHON_INTERFACE_ONLY)
 ENDIF(NOT INSTALL_PYTHON_INTERFACE_ONLY)
 
 ADD_SUBDIRECTORY(src)
-#ADD_SUBDIRECTORY(tests)
+ADD_SUBDIRECTORY(tests)
 
 PKG_CONFIG_APPEND_LIBS(${PROJECT_NAME})
 IF(NOT INSTALL_PYTHON_INTERFACE_ONLY)

tests/CMakeLists.txt

 ADD_DEFINITIONS(-DBOOST_TEST_DYN_LINK -DBOOST_TEST_MAIN)
 
-ADD_UNIT_TEST(test_simpleseqplay test_simpleseqplay.cc)
-TARGET_LINK_LIBRARIES(test_simpleseqplay ${PROJECT_NAME} ${Boost_LIBRARIES})
+#ADD_UNIT_TEST(test_simpleseqplay test_simpleseqplay.cc)
+#TARGET_LINK_LIBRARIES(test_simpleseqplay ${PROJECT_NAME} ${Boost_LIBRARIES})
+
+IF(BUILD_PYTHON_INTERFACE)
+  ADD_SUBDIRECTORY(python)
+ENDIF(BUILD_PYTHON_INTERFACE)

tests/python/CMakeLists.txt

+ADD_PYTHON_UNIT_TEST("py-oscillator" "tests/python/oscillator.py")

tests/python/oscillator.py

+import unittest
+from random import random
+
+from dynamic_graph.sot.tools import Oscillator
+
+
+class OscillatorTest(unittest.TestCase):
+    def test_load(self):
+        epsilon = random()
+        osc = Oscillator('my oscillator')
+        osc.setEpsilon(epsilon)
+        self.assertEqual(osc.getEpsilon(), epsilon)
+
+
+if __name__ == '__main__':
+    unittest.main()