Example #1
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    def test_standard(self):
        """Test that mostly empty specs result in appropriate calls to build
        the keyspace and that the weight is grabbed from the connection.
        """
        # Create the model with it's default keyspace
        model = mock.Mock()
        model.keyspaces = {"nengo": mock.Mock()}
        exp_ks = model.keyspaces["nengo"].return_value = mock.Mock()
        model._get_object_and_connection_id.return_value = (1, 3)

        # Create the connection that we're building
        pre = mock.Mock("pre")
        post = mock.Mock("post")
        post.size_in = 5
        connection = mock.Mock(spec_set=nengo.Connection)
        connection.pre_obj = pre
        connection.post_obj = post

        # Create a spec for the source and a spec for the sink
        source_obj = mock.Mock()
        source_spec = spec(source_obj)
        sink_obj = mock.Mock()
        sink_spec = spec(sink_obj)

        # Get the Signal
        signal = _make_signal(model, connection, source_spec, sink_spec)
        assert signal.source is source_obj
        assert signal.sinks == [sink_obj]
        assert signal.keyspace is exp_ks
        assert signal.weight == post.size_in
        assert signal.latching is False

        # Check that the keyspace was called correctly
        model.keyspaces["nengo"].assert_called_once_with(object=1,
                                                         connection=3)
Example #2
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    def test_keyspace_collision(self):
        # Create the model with it's default keyspace
        model = Model()

        # Create the keyspace
        keyspace_a = mock.Mock(name="keyspace")
        keyspace_b = mock.Mock(name="keyspace")

        # Create the connection that we're building
        pre = mock.Mock("pre")
        post = mock.Mock("post")
        post.size_in = 0
        connection = mock.Mock(spec_set=nengo.Connection)
        connection.pre_obj = pre
        connection.post_obj = post

        # Create a spec for the source and a spec for the sink
        source_obj = mock.Mock()
        source_spec = spec(source_obj, keyspace=keyspace_a)
        sink_obj = mock.Mock()
        sink_spec = spec(sink_obj, keyspace=keyspace_b)

        with pytest.raises(NotImplementedError) as excinfo:
            _make_signal(model, connection, source_spec, sink_spec)
        assert "keyspace" in str(excinfo.value)
Example #3
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    def test_latching(self, a_is_latching, b_is_latching, latching):
        # Construct the specs
        a_spec = spec(None, latching=a_is_latching)
        b_spec = spec(None, latching=b_is_latching)

        # Make the signal parameters, check they are correct
        sig_pars = _make_signal_parameters(a_spec, b_spec, DummyConnection())
        assert sig_pars.latching is latching
    def test_latching(self, a_is_latching, b_is_latching, latching):
        # Construct the specs
        a_spec = spec(None, latching=a_is_latching)
        b_spec = spec(None, latching=b_is_latching)

        # Make the signal parameters, check they are correct
        sig_pars = _make_signal_parameters(a_spec, b_spec, DummyConnection())
        assert sig_pars.latching is latching
    def test_keyspace_from_sink(self):
        """Check that the sink keyspace is used if provided."""
        ks = mock.Mock(name="Keyspace")
        a_spec = spec(None)
        b_spec = spec(None, keyspace=ks)

        # Make the signal parameters, check they are correct
        sig_pars = _make_signal_parameters(a_spec, b_spec, DummyConnection())
        assert sig_pars.keyspace is ks
Example #6
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    def test_keyspace_from_sink(self):
        """Check that the sink keyspace is used if provided."""
        ks = mock.Mock(name="Keyspace")
        a_spec = spec(None)
        b_spec = spec(None, keyspace=ks)

        # Make the signal parameters, check they are correct
        sig_pars = _make_signal_parameters(a_spec, b_spec, DummyConnection())
        assert sig_pars.keyspace is ks
Example #7
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    def test_weight(self, source_weight, sink_weight):
        """Test that the greatest specified weight is used."""
        # Construct the specs
        a_spec = spec(None, weight=source_weight)
        b_spec = spec(None, weight=sink_weight)

        # Make the signal parameters, check they are correct
        sig_pars = _make_signal_parameters(a_spec, b_spec, DummyConnection())
        assert sig_pars.weight == max((source_weight, sink_weight))
    def test_weight(self, source_weight, sink_weight):
        """Test that the greatest specified weight is used."""
        # Construct the specs
        a_spec = spec(None, weight=source_weight)
        b_spec = spec(None, weight=sink_weight)

        # Make the signal parameters, check they are correct
        sig_pars = _make_signal_parameters(a_spec, b_spec, DummyConnection())
        assert sig_pars.weight == max((source_weight, sink_weight))
Example #9
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    def test_keyspace_collision(self):
        """Test that if both the source and spec provide a keyspace an error is
        raised.
        """
        a_spec = spec(None, keyspace=mock.Mock())
        b_spec = spec(None, keyspace=mock.Mock())

        # Make the signal parameters, this should raise an error
        with pytest.raises(NotImplementedError):
            _make_signal_parameters(a_spec, b_spec, DummyConnection())
    def test_keyspace_collision(self):
        """Test that if both the source and spec provide a keyspace an error is
        raised.
        """
        a_spec = spec(None, keyspace=mock.Mock())
        b_spec = spec(None, keyspace=mock.Mock())

        # Make the signal parameters, this should raise an error
        with pytest.raises(NotImplementedError):
            _make_signal_parameters(a_spec, b_spec, DummyConnection())
Example #11
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    def get_node_source(self, model, cn):
        """Get the source for a connection originating from a Node."""
        if cn.pre_obj in self.passthrough_nodes:
            # If the Node is a passthrough Node then we return a reference
            # to the Filter operator we created earlier regardless.
            return spec(
                ObjectPort(self.passthrough_nodes[cn.pre_obj],
                           OutputPort.standard))
        elif cn.pre_obj in self._f_of_t_nodes:
            # If the Node is a function of time Node then we return a
            # reference to the value source we created earlier.
            return spec(
                ObjectPort(self._f_of_t_nodes[cn.pre_obj],
                           OutputPort.standard))
        elif (type(cn.post_obj) is nengo.Node
              and cn.post_obj not in self.passthrough_nodes):
            # If this connection goes from a Node to another Node (exactly, not
            # any subclasses) then we just add both nodes and the connection to
            # the host model.
            with self.host_network:
                self._add_node(cn.pre_obj)
                self._add_node(cn.post_obj)
                self._add_connection(cn)

            # Return None to indicate that the connection should not be
            # represented by a signal on SpiNNaker.
            return None
        else:
            # Otherwise, we create a new OutputNode for the Node at the
            # start of the given connection, then add both it and the Node
            # to the host network, with a joining connection.
            with self.host_network:
                # Create the output Node if necessary
                if cn.pre_obj not in self._output_nodes:
                    self._add_node(cn.pre_obj)
                    self._output_nodes[cn.pre_obj] = \
                        OutputNode(cn.pre_obj, self)

                    output_node = self._output_nodes[cn.pre_obj]
                    nengo.Connection(cn.pre_obj, output_node, synapse=None)

            # Return a specification that describes how the signal should
            # be represented on SpiNNaker.
            return self.get_spinnaker_source_for_node(model, cn)
Example #12
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    def get_node_source(self, model, cn):
        """Get the source for a connection originating from a Node."""
        if cn.pre_obj in self.passthrough_nodes:
            # If the Node is a passthrough Node then we return a reference
            # to the Filter operator we created earlier regardless.
            return spec(ObjectPort(self.passthrough_nodes[cn.pre_obj],
                                   OutputPort.standard))
        elif cn.pre_obj in self._f_of_t_nodes:
            # If the Node is a function of time Node then we return a
            # reference to the value source we created earlier.
            return spec(ObjectPort(self._f_of_t_nodes[cn.pre_obj],
                                   OutputPort.standard))
        elif (type(cn.post_obj) is nengo.Node and
                cn.post_obj not in self.passthrough_nodes):
            # If this connection goes from a Node to another Node (exactly, not
            # any subclasses) then we just add both nodes and the connection to
            # the host model.
            with self.host_network:
                self._add_node(cn.pre_obj)
                self._add_node(cn.post_obj)
                self._add_connection(cn)

            # Return None to indicate that the connection should not be
            # represented by a signal on SpiNNaker.
            return None
        else:
            # Otherwise, we create a new OutputNode for the Node at the
            # start of the given connection, then add both it and the Node
            # to the host network, with a joining connection.
            with self.host_network:
                # Create the output Node if necessary
                if cn.pre_obj not in self._output_nodes:
                    self._add_node(cn.pre_obj)
                    self._output_nodes[cn.pre_obj] = \
                        OutputNode(cn.pre_obj, self)

                    output_node = self._output_nodes[cn.pre_obj]
                    nengo.Connection(cn.pre_obj, output_node, synapse=None)

            # Return a specification that describes how the signal should
            # be represented on SpiNNaker.
            return self.get_spinnaker_source_for_node(model, cn)
Example #13
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def test_spec():
    """Test specifying the source or sink of a signal."""
    # With minimal arguments
    s = spec(None)
    assert s.target is None
    assert s.keyspace is None
    assert not s.latching
    assert s.weight == 0

    # With all arguments
    target = mock.Mock(name="target")
    keyspace = mock.Mock(name="keyspace")
    weight = 5
    latching = True

    s = spec(target, keyspace=keyspace, weight=weight, latching=latching)
    assert s.target is target
    assert s.keyspace is keyspace
    assert s.weight == weight
    assert s.latching is latching
Example #14
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def test_spec():
    """Test specifying the source or sink of a signal."""
    # With minimal arguments
    s = spec(None)
    assert s.target is None
    assert s.keyspace is None
    assert not s.latching
    assert s.weight == 0

    # With all arguments
    target = mock.Mock(name="target")
    keyspace = mock.Mock(name="keyspace")
    weight = 5
    latching = True

    s = spec(target, keyspace=keyspace, weight=weight, latching=latching)
    assert s.target is target
    assert s.keyspace is keyspace
    assert s.weight == weight
    assert s.latching is latching
Example #15
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    def test_weights(self, source_weight, sink_weight, expected_weight):
        """Test that weights are taken from the spec.
        """
        # Create the model with it's default keyspace
        model = Model()

        # Create the connection that we're building
        pre = mock.Mock("pre")
        post = mock.Mock("post")
        post.size_in = 5
        connection = mock.Mock(spec_set=nengo.Connection)
        connection.pre_obj = pre
        connection.post_obj = post

        # Create a spec for the source and a spec for the sink
        source_obj = mock.Mock()
        source_spec = spec(source_obj, weight=source_weight)
        sink_obj = mock.Mock()
        sink_spec = spec(sink_obj, weight=sink_weight)

        # Get the Signal
        signal = _make_signal(model, connection, source_spec, sink_spec)
        assert signal.weight == expected_weight
Example #16
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    def test_keyspace_from_sink(self):
        # Create the model with it's default keyspace
        model = Model()

        # Create the keyspace
        keyspace = mock.Mock(name="keyspace")

        # Create the connection that we're building
        pre = mock.Mock("pre")
        post = mock.Mock("post")
        post.size_in = 0
        connection = mock.Mock(spec_set=nengo.Connection)
        connection.pre_obj = pre
        connection.post_obj = post

        # Create a spec for the source and a spec for the sink
        source_obj = mock.Mock()
        source_spec = spec(source_obj)
        sink_obj = mock.Mock()
        sink_spec = spec(sink_obj, keyspace=keyspace)

        # Get the Signal
        signal = _make_signal(model, connection, source_spec, sink_spec)
        assert signal.keyspace is keyspace
Example #17
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    def get_node_sink(self, model, cn):
        """Get the sink for a connection terminating at a Node."""
        if cn.post_obj in self.passthrough_nodes:
            # If the Node is a passthrough Node then we return a reference
            # to the Filter operator we created earlier regardless.
            return spec(
                ObjectPort(self.passthrough_nodes[cn.post_obj],
                           InputPort.standard))
        elif (type(cn.pre_obj) is nengo.Node
              and cn.pre_obj not in self.passthrough_nodes):
            # If this connection goes from a Node to another Node (exactly, not
            # any subclasses) then we just add both nodes and the connection to
            # the host model.
            with self.host_network:
                self._add_node(cn.pre_obj)
                self._add_node(cn.post_obj)
                self._add_connection(cn)

            # Return None to indicate that the connection should not be
            # represented by a signal on SpiNNaker.
            return None
        else:
            # Otherwise we create a new InputNode for the Node at the end
            # of the given connection, then add both it and the Node to the
            # host network with a joining connection.
            with self.host_network:
                self._add_node(cn.post_obj)

                # Create the input node AND connection if necessary
                if cn.post_obj not in self._input_nodes:
                    self._input_nodes[cn.post_obj] = \
                        InputNode(cn.post_obj, self)

                    input_node = self._input_nodes[cn.post_obj]
                    nengo.Connection(input_node, cn.post_obj, synapse=None)

            # Return a specification that describes how the signal should
            # be represented on SpiNNaker.
            return self.get_spinnaker_sink_for_node(model, cn)
Example #18
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    def get_node_sink(self, model, cn):
        """Get the sink for a connection terminating at a Node."""
        if cn.post_obj in self.passthrough_nodes:
            # If the Node is a passthrough Node then we return a reference
            # to the Filter operator we created earlier regardless.
            return spec(ObjectPort(self.passthrough_nodes[cn.post_obj],
                                   InputPort.standard))
        elif (type(cn.pre_obj) is nengo.Node and
                cn.pre_obj not in self.passthrough_nodes):
            # If this connection goes from a Node to another Node (exactly, not
            # any subclasses) then we just add both nodes and the connection to
            # the host model.
            with self.host_network:
                self._add_node(cn.pre_obj)
                self._add_node(cn.post_obj)
                self._add_connection(cn)

            # Return None to indicate that the connection should not be
            # represented by a signal on SpiNNaker.
            return None
        else:
            # Otherwise we create a new InputNode for the Node at the end
            # of the given connection, then add both it and the Node to the
            # host network with a joining connection.
            with self.host_network:
                self._add_node(cn.post_obj)

                # Create the input node AND connection if necessary
                if cn.post_obj not in self._input_nodes:
                    self._input_nodes[cn.post_obj] = \
                        InputNode(cn.post_obj, self)

                    input_node = self._input_nodes[cn.post_obj]
                    nengo.Connection(input_node, cn.post_obj, synapse=None)

            # Return a specification that describes how the signal should
            # be represented on SpiNNaker.
            return self.get_spinnaker_sink_for_node(model, cn)
Example #19
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 def source_getter(model, conn):
     assert model is m
     assert conn is connection
     return spec(ObjectPort(source, source_port))
Example #20
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 def sink_getter(model, conn):
     assert model is m
     assert conn is connection
     return spec(ObjectPort(sink, sink_port))
Example #21
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        def sink_getter_fn(m, c):
            assert m is model
            assert c is connection

            return spec(sink)
Example #22
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        def source_getter_fn(m, c):
            assert m is model
            assert c is connection

            return spec(source)
 def source_getter(model, conn):
     assert model is m
     assert conn is connection
     return spec(ObjectPort(source, source_port))
 def sink_getter(model, conn):
     assert model is m
     assert conn is connection
     return spec(ObjectPort(sink, sink_port))