def test_get_node_source_f_of_t(self): """Test that calling the NodeIOController for a f_of_t->xx connection doesn't ask for a SpiNNaker sorce and instead returns the value source that was associated with the Node. """ with nengo.Network() as net: a = nengo.Node(lambda t: t) b = nengo.Ensemble(100, 1) a_b = nengo.Connection(a, b) # Mark the Node as being a function of time add_spinnaker_params(net.config) net.config[a].function_of_time = True # Create a model and build the Node model = Model() model.config = net.config nioc = NodeIOController() nioc.build_node(model, a) # Get the source and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_source_for_node") as gssfn: spec = nioc.get_node_source(model, a_b) assert spec.target.obj is model.object_operators[a] assert spec.target.port is OutputPort.standard # Assert this _didn't_ call `get_spinnaker_source_for_node` assert not gssfn.called # There should be nothing in the host network assert nioc.host_network.all_nodes == list() assert nioc.host_network.all_connections == list()
def test_build_node_function_of_time(self, period): """Test that building a function of time Node creates a new operator. """ with nengo.Network() as net: a = nengo.Node(lambda t: [t, t**2], size_in=0) # Mark the Node as a function of time add_spinnaker_params(net.config) net.config[a].function_of_time = True if period is not None: net.config[a].function_of_time_period = period # Create the model model = Model() model.config = net.config # Build the Node nioc = NodeIOController() nioc.build_node(model, a) # Assert that this added a new operator to the model assert model.object_operators[a].function is a.output if period is not None: assert model.object_operators[a].period == period else: assert model.object_operators[a].period is None assert model.extra_operators == list()
def test_build_node_function_of_time_off(self, recwarn): """Test that building a function of time Node is exactly the same as building a regular Node if function of time Nodes are disabled (but that a warning is raised). """ with nengo.Network() as net: a = nengo.Node(lambda t: t, size_in=0, size_out=1, label="Stim") # Mark the Node as a function of time add_spinnaker_params(net.config) net.config[a].function_of_time = True # Create the model model = Model() model.config = net.config # Build the Node nioc = NodeIOController(function_of_time_nodes=False) nioc.build_node(model, a) # Assert that no new operators were created assert model.object_operators == dict() assert model.extra_operators == list() # This should have raised a warning w = recwarn.pop() assert "disabled" in str(w.message) assert "Stim" in str(w.message)
def test_build_node(self): """Test that building a Node does nothing. """ with nengo.Network() as net: a = nengo.Node(lambda t, x: x**2, size_in=3, size_out=3) # Create the model model = Model() model.config = net.config # Build the Node nioc = NodeIOController() nioc.build_node(model, a) # Assert that no new operators were created assert model.object_operators == dict() assert model.extra_operators == list()
def test_passthrough_nodes_with_other_nodes(self): """Test the handling of passthrough when other Nodes are present.""" with nengo.Network() as net: a = nengo.Node(lambda t: t, size_in=0, size_out=1) b = nengo.Node(None, size_in=1, label="Passthrough Node") c = nengo.Node(lambda t, x: None, size_in=1, size_out=0) a_b = nengo.Connection(a, b) b_c = nengo.Connection(b, c) # Create a model and build the Nodes model = Model() model.config = net.config nioc = NodeIOController() nioc.build_node(model, a) nioc.build_node(model, b) nioc.build_node(model, c) # Check the passthrough Node resulted in a new operator but that the # others didn't assert a not in model.object_operators assert b in model.object_operators assert c not in model.object_operators # Get the source and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_source_for_node") as gssfn: spec = nioc.get_node_source(model, b_c) assert spec.target.obj is model.object_operators[b] assert spec.target.port is OutputPort.standard # Get the sink and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_sink_for_node"): assert nioc.get_node_sink(model, b_c) is not None assert c in nioc._input_nodes # Get the sink and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_sink_for_node") as gssfn: spec = nioc.get_node_sink(model, a_b) assert spec.target.obj is model.object_operators[b] assert spec.target.port is InputPort.standard # Get the source and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_source_for_node") as gssfn: assert nioc.get_node_source(model, a_b) is not None assert a in nioc._output_nodes
def test_passthrough_nodes(self, width): """Test the handling of passthrough Nodes.""" with nengo.Network() as net: a = nengo.Ensemble(100, width) b = nengo.Node(None, size_in=width, label="Passthrough Node") c = nengo.Ensemble(100, width) a_b = nengo.Connection(a, b) b_c = nengo.Connection(b, c) # Create a model and build the Node model = Model() model.config = net.config nioc = NodeIOController() nioc.build_node(model, b) # Check the passthrough Node resulted in a new operator assert model.object_operators[b].size_in == b.size_in assert model.object_operators[b].transmission_delay == 1 assert model.object_operators[b].interpacket_pause == 1 # Get the source and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_source_for_node") as gssfn: spec = nioc.get_node_source(model, b_c) assert spec.target.obj is model.object_operators[b] assert spec.target.port is OutputPort.standard # Assert this _didn't_ call `get_spinnaker_source_for_node` assert not gssfn.called # Get the sink and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_sink_for_node") as gssfn: spec = nioc.get_node_sink(model, a_b) assert spec.target.obj is model.object_operators[b] assert spec.target.port is InputPort.standard # Assert this _didn't_ call `get_spinnaker_sink_for_node` assert not gssfn.called # There should be nothing in the host network assert nioc.host_network.all_nodes == list() assert nioc.host_network.all_connections == list()
def test_build_node_process_is_not_constant(self): """Test that building a Node with a process is not treated the same as building a constant valued Node. """ with nengo.Network() as net: a = nengo.Node(nengo.processes.Process()) # Create the model model = Model() model.config = net.config # Build the Node nioc = NodeIOController() nioc.build_node(model, a) # Assert that this added a new operator to the model assert model.object_operators[a].function is a.output assert model.object_operators[a].period is None assert model.extra_operators == list()
def test_build_node_constant_value_is_function_of_time(self): """Test that building a Node with a constant value is equivalent to building a function of time Node. """ with nengo.Network() as net: a = nengo.Node(np.array([0.5, 0.1])) # Create the model model = Model() model.config = net.config # Build the Node nioc = NodeIOController() nioc.build_node(model, a) # Assert that this added a new operator to the model assert model.object_operators[a].function is a.output assert model.object_operators[a].period is model.dt assert model.extra_operators == list()
def test_passthrough_nodes(self): """Test the handling of passthrough Nodes.""" with nengo.Network() as net: a = nengo.Ensemble(100, 1) b = nengo.Node(size_in=1, label="Passthrough Node") c = nengo.Ensemble(100, 1) a_b = nengo.Connection(a, b) b_c = nengo.Connection(b, c) # Create a model and build the Node model = Model() model.config = net.config nioc = NodeIOController() nioc.build_node(model, b) # Check the passthrough Node resulted in a new operator assert isinstance(model.object_operators[b], PassthroughNode) # Get the source and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_source_for_node") as gssfn: spec = nioc.get_node_source(model, b_c) assert spec.target.obj is model.object_operators[b] assert spec.target.port is OutputPort.standard # Assert this _didn't_ call `get_spinnaker_source_for_node` assert not gssfn.called # Get the sink and ensure that the appropriate object is returned with mock.patch.object(nioc, "get_spinnaker_sink_for_node") as gssfn: spec = nioc.get_node_sink(model, a_b) assert spec.target.obj is model.object_operators[b] assert spec.target.port is InputPort.standard # Assert this _didn't_ call `get_spinnaker_sink_for_node` assert not gssfn.called # There should be nothing in the host network assert nioc.host_network.all_nodes == list() assert nioc.host_network.all_connections == list()