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try:
from builtins import object
except ImportError:
pass
from collections import OrderedDict
from transitions.extensions.nesting import NestedState as State, _build_state_list
from transitions.extensions import HierarchicalGraphMachine
from transitions import MachineError
from .test_nesting import TestNestedTransitions as TestNested
from .test_pygraphviz import pgv
from .test_graphviz import pgv as gv
from unittest import skipIf
try:
from unittest.mock import MagicMock
except ImportError:
from mock import MagicMock # type: ignore
class TestParallel(TestNested):
def setUp(self):
super(TestParallel, self).setUp()
self.states = ['A', 'B', {'name': 'C',
'parallel': [{'name': '1', 'children': ['a', 'b'],
'initial': 'a',
'transitions': [['go', 'a', 'b']]},
{'name': '2', 'children': ['a', 'b'],
'initial': 'a',
'transitions': [['go', 'a', 'b']]}]}]
self.transitions = [['reset', 'C', 'A']]
def test_init(self):
m = self.stuff.machine_cls(states=self.states)
m.to_C()
self.assertEqual(['C{0}1{0}a'.format(State.separator), 'C{0}2{0}a'.format(State.separator)], m.state)
def test_enter(self):
m = self.stuff.machine_cls(states=self.states, transitions=self.transitions, initial='A')
m.to_C()
m.go()
self.assertEqual(['C{0}1{0}b'.format(State.separator), 'C{0}2{0}b'.format(State.separator)], m.state)
def test_exit(self):
class Model:
def __init__(self):
self.mock = MagicMock()
def on_exit_C(self):
self.mock()
def on_exit_C_1(self):
self.mock()
def on_exit_C_2(self):
self.mock()
model1 = Model()
m = self.stuff.machine_cls(model1, states=self.states, transitions=self.transitions, initial='A')
m.add_transition('reinit', 'C', 'C')
model1.to_C()
self.assertEqual(['C{0}1{0}a'.format(State.separator), 'C{0}2{0}a'.format(State.separator)], model1.state)
model1.reset()
self.assertTrue(model1.is_A())
self.assertEqual(3, model1.mock.call_count)
model2 = Model()
m.add_model(model2, initial='C')
model2.reinit()
self.assertEqual(['C{0}1{0}a'.format(State.separator), 'C{0}2{0}a'.format(State.separator)], model2.state)
self.assertEqual(3, model2.mock.call_count)
model2.reset()
self.assertTrue(model2.is_A())
self.assertEqual(6, model2.mock.call_count)
for mod in m.models:
mod.trigger('to_C')
for mod in m.models:
mod.trigger('reset')
self.assertEqual(6, model1.mock.call_count)
self.assertEqual(9, model2.mock.call_count)
def test_parent_transition(self):
m = self.stuff.machine_cls(states=self.states)
m.add_transition('switch', 'C{0}2{0}a'.format(State.separator), 'C{0}2{0}b'.format(State.separator))
m.to_C()
m.switch()
self.assertEqual(['C{0}1{0}a'.format(State.separator), 'C{0}2{0}b'.format(State.separator)], m.state)
def test_shallow_parallel(self):
sep = self.state_cls.separator
states = [
{
'name': 'P', 'parallel':
[
'1', # no initial state
{'name': '2', 'children': ['a', 'b'], 'initial': 'b'}
]
},
'X'
]
m = self.machine_cls(states=states, initial='P')
self.assertEqual(['P{0}1'.format(sep), 'P{0}2{0}b'.format(sep)], m.state)
m.to_X()
self.assertEqual('X', m.state)
m.to_P()
self.assertEqual(['P{0}1'.format(sep), 'P{0}2{0}b'.format(sep)], m.state)
with self.assertRaises(MachineError):
m.to('X')
def test_multiple(self):
states = ['A',
{'name': 'B',
'parallel': [
{'name': '1', 'parallel': [
{'name': 'a', 'children': ['x', 'y', 'z'], 'initial': 'z'},
{'name': 'b', 'children': ['x', 'y', 'z'], 'initial': 'y'}
]},
{'name': '2', 'children': ['a', 'b', 'c'], 'initial': 'a'},
]}]
m = self.stuff.machine_cls(states=states, initial='A')
self.assertTrue(m.is_A())
m.to_B()
self.assertEqual([['B{0}1{0}a{0}z'.format(State.separator),
'B{0}1{0}b{0}y'.format(State.separator)],
'B{0}2{0}a'.format(State.separator)], m.state)
# check whether we can initialize a new machine in a parallel state
m2 = self.machine_cls(states=states, initial=m.state)
self.assertEqual([['B{0}1{0}a{0}z'.format(State.separator),
'B{0}1{0}b{0}y'.format(State.separator)],
'B{0}2{0}a'.format(State.separator)], m2.state)
m.to_A()
self.assertEqual('A', m.state)
m2.to_A()
self.assertEqual(m.state, m2.state)
def test_deep_initial(self):
exit_mock = MagicMock()
m = self.machine_cls(initial=['B{0}1'.format(State.separator), 'B{0}2{0}a'.format(State.separator)])
m.on_exit('B', exit_mock)
m.on_exit('B{0}1'.format(State.separator), exit_mock)
m.on_exit('B{0}2'.format(State.separator), exit_mock)
m.on_exit('B{0}2{0}a'.format(State.separator), exit_mock)
m.to_B()
self.assertEqual('B', m.state)
self.assertEqual(4, exit_mock.call_count)
def test_parallel_initial(self):
m = self.machine_cls(states=['A', 'B', {'name': 'C', 'parallel': ['1', '2']}], initial='C')
m = self.machine_cls(states=['A', 'B', {'name': 'C', 'parallel': ['1', '2']}], initial=['C_1', 'C_2'])
def test_parallel_reflexive(self):
exit_c_1_mock = MagicMock()
m = self.machine_cls(states=['A', 'B', {'name': 'C', 'parallel': [{'name': '1',
'on_exit': exit_c_1_mock}, '2']}],
transitions=[['test',
'C{0}2'.format(State.separator),
'C{0}2'.format(State.separator)]], initial='C')
m.test()
self.assertEqual(["C{0}1".format(State.separator),
"C{0}2".format(State.separator)], m.state)
self.assertFalse(exit_c_1_mock.called)
def test_multiple_deeper(self):
sep = self.state_cls.separator
states = ['A',
{'name': 'P',
'parallel': [
'1',
{'name': '2', 'parallel': [
{'name': 'a'},
{'name': 'b', 'parallel': [
{'name': 'x', 'parallel': ['1', '2']}, 'y'
]}
]},
]}]
ref_state = ['P{0}1'.format(sep),
['P{0}2{0}a'.format(sep),
[['P{0}2{0}b{0}x{0}1'.format(sep),
'P{0}2{0}b{0}x{0}2'.format(sep)],
'P{0}2{0}b{0}y'.format(sep)]]]
m = self.stuff.machine_cls(states=states, initial='A')
self.assertTrue(m.is_A())
m.to_P()
self.assertEqual(ref_state, m.state)
m.to_A()
def test_model_state_conversion(self):
sep = self.state_cls.separator
states = ['P{0}1'.format(sep),
['P{0}2{0}a'.format(sep),
[['P{0}2{0}b{0}x{0}1'.format(sep),
'P{0}2{0}b{0}x{0}2'.format(sep)],
'P{0}2{0}b{0}y'.format(sep)]]]
tree = OrderedDict(
[('P', OrderedDict(
[('1', OrderedDict()),
('2', OrderedDict(
[('a', OrderedDict()),
('b', OrderedDict(
[('x', OrderedDict(
[('1', OrderedDict()),
('2', OrderedDict())])),
('y', OrderedDict())]
))]
))]
))]
) # type: ignore
m = self.machine_cls()
self.assertEqual(tree, m.build_state_tree(states, sep))
self.assertEqual(states, _build_state_list(tree, sep))
def test_may_transition_with_parallel(self):
states = ['A',
{'name': 'P',
'parallel': [
{'name': '1', 'states': ["a", "b"], "initial": 'a'},
{'name': '2', 'states': ["a", "b"], "initial": 'a',
'transitions': [['valid', 'a', 'b']]}
]}]
m = self.machine_cls(states=states, initial="A")
assert not m.may_valid()
assert m.to_P()
assert m.is_P(allow_substates=True)
assert m.is_P_1_a()
assert m.is_P_2_a()
assert m.may_valid()
assert m.valid()
assert m.is_P_1_a()
assert not m.is_P_2_a()
assert m.is_P_2_b()
def test_is_state_parallel(self):
states = ['A',
{'name': 'P',
'parallel': [
'1',
{'name': '2', 'parallel': [
{'name': 'a'},
{'name': 'b', 'parallel': [
{'name': 'x', 'parallel': ['1', '2']}, 'y'
]}
]},
]}]
m = self.machine_cls(states=states, initial="A")
assert m.is_A()
assert not m.is_P_2()
assert not m.is_P_2_a()
assert not m.is_P_2_b()
assert not m.is_P_2_b_x()
assert not m.is_P(allow_substates=True)
m.to_P()
assert m.is_P_1()
assert m.is_P_2_a()
assert not m.is_P_2()
assert m.is_P(allow_substates=True)
assert m.is_P_2(allow_substates=True)
assert not m.is_A(allow_substates=True)
@skipIf(pgv is None, "pygraphviz is not available")
class TestParallelWithPyGraphviz(TestParallel):
def setUp(self):
class PGVMachine(HierarchicalGraphMachine):
def __init__(self, *args, **kwargs):
kwargs['graph_engine'] = "pygraphviz"
super(PGVMachine, self).__init__(*args, **kwargs)
super(TestParallelWithPyGraphviz, self).setUp()
self.machine_cls = PGVMachine
@skipIf(gv is None, "graphviz is not available")
class TestParallelWithGraphviz(TestParallel):
def setUp(self):
class GVMachine(HierarchicalGraphMachine):
def __init__(self, *args, **kwargs):
kwargs['graph_engine'] = "graphviz"
super(GVMachine, self).__init__(*args, **kwargs)
super(TestParallelWithGraphviz, self).setUp()
self.machine_cls = GVMachine
|
