def test_invalid_build(self):
artifacts = {'a': 42, 'b': lambda A: A * 2}
afx = Artifax(artifacts)
with self.assertRaises(UnresolvedDependencyError):
_ = afx.build(solver='bfs_parallel')
result = afx.build(allow_partial_functions=True)
self.assertIsInstance(result['b'], partial)
def test_initial(self):
afx = Artifax({
'earth': object(),
'un': lambda earth: 'water @{}'.format(earth),
'mars': object(),
'mcrn': lambda mars: 'dust @{}'.format(mars),
'belt': object(),
'opa': lambda belt: 'ice @{}'.format(belt)
})
self.assertEqual(afx.initial(), set(['earth', 'mars', 'belt']))
_ = afx.build()
def test_targeted_build(self):
afx = Artifax(
{
'greeting':
lambda name, punctuation: 'Hello, {}{}'.format(
name, punctuation)
},
name='World',
punctuation='')
greeting = afx.build(targets='greeting')
self.assertEqual(greeting, 'Hello, World')
afx.set('punctuation', '!')
greeting, punctuation = afx.build(targets=('greeting', 'punctuation'))
self.assertEqual(greeting, 'Hello, World!')
self.assertEqual(punctuation, '!')
result = afx.build()
self.assertEqual(result['greeting'], 'Hello, World!')
self.assertEqual(result['name'], 'World')
self.assertEqual(result['punctuation'], '!')
def test_incremental_build(self):
class ExpensiveObject:
def __init__(self):
self.counter = 0
def expensive_method(self, _):
self.counter += 1
return 'foobar'
exo = ExpensiveObject()
afx = Artifax(
p=(3, 4),
q=(12, 13),
exo=lambda q: exo.expensive_method(q),
)
# pool_async silently fails to get trigger callback that resolves
# the nodes, I guess because it can't pickle ExpensiveObject
# from the unittest thread
result = afx.build(solver='linear')
self.assertEqual(exo.counter, 1)
afx.set('p', (1, 1))
result = afx.build(solver='linear')
self.assertEqual(exo.counter, 1)
afx.set('q', (0, 0))
result = afx.build(solver='linear')
self.assertEqual(exo.counter, 2)
afx.set('new', 'hello')
result = afx.build(solver='linear')
self.assertEqual(result['new'], 'hello')
self.assertEqual(exo.counter, 2)
afx.pop('new')
result = afx.build(solver='linear')
self.assertEqual(exo.counter, 2)
def test_at_constructor(self):
def subtract(p, q):
return p - q
afx = Artifax(
ab=At('a', 'b', subtract),
ba=At('b', 'a', subtract),
a=-11,
b=7.5,
)
ab, ba = afx.build(targets=('ab', 'ba'))
self.assertEqual(ab, -18.5)
self.assertEqual(ba, 18.5)
def test_stale(self):
class C:
counter = 0
def __init__(self):
C.counter += 1
afx = Artifax({
'a': 42,
'b': lambda a: math.pow(a, 5),
'counter': lambda: C(),
})
result = afx.build(targets='b')
self.assertEqual(result, 130691232)
# 'counter' node should not have been evaluated
# and should still be stale
self.assertEqual(C.counter, 0)
# cannot use async solver here because C won't be
# pickable from pyunit
_ = afx.build()['counter']()
self.assertEqual(C.counter, 1)
def test_multiprocessing(self):
afx = Artifax({
'p1': 'p1',
'p2': 'p2',
'c1': lambda p1: 'c1 after {}'.format(p1),
'c2': lambda p1: None,
'c3': lambda p2: None,
'c4': lambda p2: None,
'c5': lambda p1, p2, c2, c3: None,
'c6': lambda c1: None,
'F': lambda c1, c2, c3, c4, c5: None,
})
c1 = afx.build(targets=('c1', ))
self.assertEqual(c1, 'c1 after p1')
def test_build(self):
obj = object()
afx = Artifax({
'int': 42,
'float': 1.618,
'string': 'Hello',
'obj': obj,
'list': [1, 2, 3],
'dictionary': {
'answer': 42
},
'set': set([1, 2, 3.14])
})
result = afx.build(solver='linear')
self.assertEqual(result['int'], 42)
self.assertEqual(result['float'], 1.618)
self.assertEqual(result['string'], 'Hello')
self.assertEqual(result['obj'], obj)
self.assertEqual(result['list'], [1, 2, 3])
self.assertEqual(result['dictionary'], {'answer': 42})
self.assertEqual(result['set'], set([1, 2, 3.14]))