def test_splitting_non_const_non_const(self):
s = dl.lib.StateSaver(int, verbose=True)
with dl.DeltaGraph() as graph:
val = return_1_2_non_const()
s.save_and_exit(
add_non_const(
add_non_const(add_non_const(val.x, val.x), val.y), val.y))
self.check_executes_graph(graph, "saving 6\n")
def test_migen_serialisation(self):
"""Serialise/deserialise a graph with a node with a PyMigenBody.
Notes
-----
The content of the bodies depends on the environment, i.e. how the test
is executed. For this reason we just compare the structure of the graph
here.
"""
DeltaGraph.clean_stack()
datapath = os.path.join('deltalanguage', 'test', 'data')
s = StateSaver(int)
example_migen = MigenDUT(name='counter',
vcd_name="/workdir/MigenDUT.vcd")
with DeltaGraph() as graph:
example_migen_out = example_migen.call(40, 2)
s.save_and_exit(
add_non_const(example_migen_out.out1,
multiplier(example_migen_out.out2)))
data, _ = serialise_graph(graph)
self.assertEqual(type(data), bytes)
g_capnp = deserialise_graph(data).to_dict()
assert_capnp_content_types(self, g_capnp)
with open(os.path.join(datapath, 'graph_with_migen_capnp.json'),
'r') as file:
self.assertEqual(g_capnp, json.load(file))
def test_cannot_fold_through_semi_const_multi_body(self):
"""If a node has both constant and non-constant bodies, then
this node cannot be folded.
.. note::
This behaviors might change so only the selected body
(during execution) will define if the node can/cannot be
folded.
"""
with DeltaGraph() as graph:
n1 = add_const(4, foo_semi_const_1_t(3))
n2 = add_non_const(4, foo_semi_const_1_t(2))
# nodes producing constants are turned to constant nodes
for node in graph.find_node_by_name('node'):
self.assertIsInstance(node.body, PyConstBody)
# this one is a non-constant one now
self.assertIsInstance(n1.body, PyFuncBody)
# this one is still a non-constant
self.assertIsInstance(n2.body, PyFuncBody)
self.assertTrue(graph.check())
def test_splitting_non_const_non_const(self):
"""Non-const -> non-const -> exit."""
s = dl.lib.StateSaver(int, verbose=True)
with dl.DeltaGraph() as graph:
val = return_1_non_const()
s.save_and_exit(add_non_const(val, val))
self.check_executes_graph(graph, "saving 2\n")
def test_splitting_const_const(self):
"""Const -> const -> exit."""
s = dl.lib.StateSaver(int, verbose=True)
with dl.DeltaGraph() as graph:
val = return_1_const()
out = add_non_const(increment_const(val), increment_const(val))
s.save_and_exit(out)
self.check_executes_graph(graph, "saving 4\n")
def test_one_migen_node_with_2_outs(self):
"""One PyMigenBody with 2 out ports produces what we expect."""
s = dl.lib.StateSaver(int, verbose=True)
with dl.DeltaGraph() as graph:
counter = MigenDUT().call(40, 2)
s.save_and_exit(
add_non_const(counter.out1, multiplier(counter.out2)))
self.check_executes_graph(graph, "saving 5042\n")
def test_splitter_serialisation(self):
"""Splitter nodes should be added when serialising."""
with DeltaGraph() as test_graph:
a = add_non_const(2, 3)
self.func(a, 4)
self.func(a, 5)
_, prog = serialise_graph(test_graph)
splitter_body = dill.loads(prog.bodies[-1].python.dillImpl)
self.assertEqual(type(splitter_body), PyFuncBody)
self.assertEqual(len(prog.nodes), 8)
def test_complex_networkx_graph(self):
with DeltaGraph() as complex_graph:
ph = placeholder_node_factory()
n = add_non_const(1, ph)
print_node = print_until_10(n=n)
ph.specify_by_node(print_node)
networkx_graph = complex_graph.get_networkx_graph()
self.assertEqual(node_cnt(networkx_graph.nodes()),
Counter({'node': 1, 'add_non_const': 1,
'print_until_10': 1}))
self.assertEqual(edge_cnt(networkx_graph.edges()),
Counter({('node', 'add_non_const'): 1,
('add_non_const', 'print_until_10'): 1,
('print_until_10', 'add_non_const'): 1}))
def test_simple_networkx_graph(self):
s = StateSaver(int)
with DeltaGraph() as graph:
n = add_non_const(3, 4)
s.save_and_exit(n)
networkx_graph = graph.get_networkx_graph()
self.assertEqual(node_cnt(networkx_graph.nodes()),
Counter({'node': 2, 'add_non_const': 1,
'save_and_exit': 1}))
self.assertEqual(edge_cnt(networkx_graph.edges()),
Counter({('node', 'add_non_const'): 2,
('add_non_const', 'save_and_exit'): 1}))
def test_one_migen_node_with_separate_ctrl_on_output_valid(self):
"""One PyMigenBody with 2 optional output ports produces
the correct valid values (for the different ports).
The migen node should be generating a sequence of outputs
(1, None), (None, 2), (3, None) etc... """
checker = dl.lib.StateSaver(int,
condition=lambda x: x == 3,
verbose=True)
with dl.DeltaGraph() as graph:
alt = AlternatingOutputsMigen().call(1)
my_adder = add_non_const(alt.out_a, alt.out_b)
# Checking that we have received a 1 and a 2
checker.save_and_exit_if(my_adder)
self.check_executes_graph(graph, "saving 3\n")
def test_simple_folding_const_inputs(self):
"""Test that nodes producing constants are constant nodes."""
with DeltaGraph() as graph:
n1 = add_const(4, 3)
n2 = add_non_const(4, 2)
# nodes producing constants are turned to constant nodes
for node in graph.find_node_by_name('node'):
self.assertIsInstance(node.body, PyConstBody)
# this one is turned to a constant node as well
self.assertIsInstance(n1.body, PyConstBody)
# this one would have done so as well, but we disallowed it
self.assertIsInstance(n2.body, PyFuncBody)
self.assertTrue(graph.check())
def test_simple_folding_non_const_inputs(self):
"""Test that nodes with non constant inputs cannot fold to become
constant.
"""
with DeltaGraph() as graph:
n1 = add_const(4, forward_non_const(3))
n2 = add_non_const(4, forward_non_const(2))
# nodes producing constants are turned to constant nodes
for node in graph.find_node_by_name('node'):
self.assertIsInstance(node.body, PyConstBody)
# this one is a non-constant one now
self.assertIsInstance(n1.body, PyFuncBody)
# this one is still a non-constant
self.assertIsInstance(n2.body, PyFuncBody)
self.assertTrue(graph.check())
def test_integration(self):
"""Constructs the following graph:
+---------------------------+
| SAVE |
| +-----+ ^ |
+--->Add +----+ |
|to 10| +----+ |
| +--------> | |
+-----+ |ADD +---+
2 --->| |
+----+
"""
s = dl.lib.StateSaver(int, verbose=True)
with dl.DeltaGraph() as graph:
add_ph = dl.placeholder_node_factory()
b = return_2_const()
int_node = add_until_10.call(num=add_ph)
add_node = add_non_const(b, int_node.x)
add_ph.specify_by_node(add_node)
s.save_and_exit(int_node.y)
self.check_executes_graph(graph, "saving 11\n")
