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_get_node_sink_repeated(self): """Test that calling a NodeIOController to get the sink for a connection which terminates at a Node calls the method `get_spinnaker_sink_for_node` and creates a new InputNode and adds it to the host network. """ with nengo.Network(): a = nengo.Ensemble(100, 1) c = nengo.Ensemble(100, 1) b = nengo.Node(lambda t, x: None, size_in=1) a_b = nengo.Connection(a, b) c_b = nengo.Connection(c, b) model = mock.Mock() # Create the IO controller nioc = NodeIOController() # Get the sinks with mock.patch.object(nioc, "get_spinnaker_sink_for_node"): nioc.get_node_sink(model, a_b) nioc.get_node_sink(model, c_b) # Check that `a` is in the host_network as is a new InputNode, and a # connection between them with a synapse of None. assert len(nioc.host_network.all_nodes) == 2 for node in nioc.host_network.all_nodes: if node is not b: assert isinstance(node, InputNode) assert node.target is b in_node = node else: assert node is b # Check that there is ONLY ONE connection from a to the output node assert len(nioc.host_network.all_connections) == 1 for conn in nioc.host_network.all_connections: assert conn.pre_obj is in_node assert conn.post_obj is b assert conn.synapse is None
def test_get_source_then_sink_of_node_to_node(self): """Test that getting the source and then the sink of a Node->Node connection just adds those items to the host network. """ with nengo.Network(): a = nengo.Node(lambda t: [t, t], size_in=0, size_out=2) b = nengo.Node(lambda t, x: None, size_in=2, size_out=0) a_b = nengo.Connection(a, b) model = mock.Mock() # Create the IO controller nioc = NodeIOController() # Get the source and then the sink with mock.patch.object(nioc, "get_spinnaker_sink_for_node"), \ mock.patch.object(nioc, "get_spinnaker_source_for_node"): nioc.get_node_source(model, a_b) nioc.get_node_sink(model, a_b) # The host network should contain a, b and a_b and nothing else assert nioc.host_network.all_nodes == [a, b] assert nioc.host_network.all_connections == [a_b]
def test_get_node_sink_standard(self): """Test that calling a NodeIOController to get the sink for a connection which terminates at a Node calls the method `get_spinnaker_sink_for_node` and creates a new InputNode and adds it to the host network. """ with nengo.Network(): a = nengo.Ensemble(100, 2) b = nengo.Node(lambda t, x: None, size_in=2) a_b = nengo.Connection(a, b) model = mock.Mock() # Create the IO controller nioc = NodeIOController() # Get the sink with mock.patch.object(nioc, "get_spinnaker_sink_for_node") as gssfn: spec = gssfn.return_value = mock.Mock(name="spec") assert nioc.get_node_sink(model, a_b) is spec # Assert this called `get_spinnaker_sink_for_node` correctly gssfn.assert_called_once_with(model, a_b) # Check that `a` is in the host_network as is a new InputNode, and a # connection between them with a synapse of None. for node in nioc.host_network.all_nodes: if node is not b: assert isinstance(node, InputNode) assert node.target is b in_node = node else: assert node is b # Check that there is a connection from a to the output node assert len(nioc.host_network.all_connections) == 1 conn = nioc.host_network.all_connections[0] assert conn.pre_obj is in_node assert conn.post_obj is b assert conn.synapse is None # Check that the Node is included in the Node input dictionary assert np.all(nioc.node_input[b] == np.zeros(b.size_in))
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_get_node_sink_node_to_node(self): """Test that calling the NodeIOController with a Node->Node connection doesn't ask for a SpiNNaker sink. """ with nengo.Network(): a = nengo.Node(lambda t: t) b = nengo.Node(lambda t, x: None, size_in=1) a_b = nengo.Connection(a, b) model = mock.Mock() # Create the IO controller nioc = NodeIOController() # Get the source with mock.patch.object(nioc, "get_spinnaker_sink_for_node") as gssfn: assert nioc.get_node_sink(model, a_b) is None # Assert this _didn't_ call `get_spinnaker_source_for_node` assert not gssfn.called
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()