diff --git a/Makefile b/Makefile
index fea9236..e097081 100644
--- a/Makefile
+++ b/Makefile
@@ -6,6 +6,8 @@ GPP_SRCS := Main.cpp Rbm.cpp Layer.cpp Stack.cpp MainComponent.cpp
 GPP_OBJS := $(addprefix ${BUILD_DIR}/, $(subst .cpp,.o,$(GPP_SRCS)))
 GCC_SRCS := noise.c
 GCC_OBJS := $(addprefix ${BUILD_DIR}/, $(subst .c,.o,$(GCC_SRCS)))
+
+TEST_SRCS := source/main.cpp source/Rbm.cpp source/Layer.cpp source/Stack.cpp source/noise.c
 	
 CXXFLAGS += -std=c++11 -L juce/build/${CONFIG}
 CXXFLAGS_debug := ${CXXFLAGS} -O0 -g
@@ -24,7 +26,8 @@ LIBS := -lstdc++ -lm -larmadillo -ljsoncpp -ljuce -lfreetype -lpthread -ldl -lrt
 DEFINES := -DARMA_OPENMP_THREADS=1
 	
 all: ${BUILD_DIR}/rbm.elf
-
+test: ${BUILD_DIR}/test.elf
+	
 ${GPP_OBJS}: $(BUILD_DIR)/%.o : source/%.cpp
 	mkdir -p $(dir $@)
 	g++ ${CXXFLAGS_${CONFIG}} ${DEFINES} ${INCLUDES} -o $@ -c $<
@@ -36,6 +39,10 @@ ${GCC_OBJS}: $(BUILD_DIR)/%.o : source/%.c
 ${BUILD_DIR}/rbm.elf: ${GPP_OBJS} ${GCC_OBJS} juce/build/${CONFIG}/libjuce.a
 	gcc ${LFLAGS_${CONFIG}} ${GPP_OBJS} ${GCC_OBJS} ${LIBS} -o $@
 
+${BUILD_DIR}/test.elf: ${TEST_SRCS}
+	mkdir -p $(dir $@)
+	g++ ${CXXFLAGS_${CONFIG}} ${DEFINES} -o $@ ${TEST_SRCS} -larmadillo -ljsoncpp
+
 juce/build/${CONFIG}/libjuce.a: 
 	make -C juce
 clean:
diff --git a/source/Stack.cpp b/source/Stack.cpp
index 3c17829..b8423f8 100644
--- a/source/Stack.cpp
+++ b/source/Stack.cpp
@@ -28,7 +28,18 @@ Stack::Stack(const Stack& orig)
 }
 
 Stack::~Stack()
+{ }
+
+size_t Stack::numLayers()
 {
+	size_t count = 0;
+	Layer *pLayer = m_pLayers;
+	while(pLayer)
+	{
+		count++;
+		pLayer = pLayer->upper;
+	}
+	return count;
 }
 
 void Stack::addLayer(Layer *pOtherLayer)
diff --git a/source/Stack.hpp b/source/Stack.hpp
index c7264cb..3d32ffd 100644
--- a/source/Stack.hpp
+++ b/source/Stack.hpp
@@ -42,6 +42,9 @@ public:
 	{
 		std::cout << "Stack::batchchanged() called" << std::endl;
 	}
+	
+	size_t numLayers();
+	
 private:
 	const std::string &m_prjname;
 	Layer *m_pLayers;