l_middle_layer_neuron_0.addInConnection(l_input_layer_neuron_1, 1.0);
l_middle_layer_neuron_1.addInConnection(l_input_layer_neuron_0, 1.0);
l_middle_layer_neuron_1.addInConnection(l_input_layer_neuron_1, 1.0);
l_middle_layer_neuron_2.addInConnection(l_input_layer_neuron_0, 1.0);
l_middle_layer_neuron_2.addInConnection(l_input_layer_neuron_1, 1.0);
l_middle_layer_neuron_2.addInConnection(l_input_layer_neuron_2, 1.0);
assertEquals( 2, l_middle_layer_neuron_0.getInConnections().size() );