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faif merged 2 commits into from
May 1, 2019
Merged

Doctests for Observer and lazy_evaluation #296

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4a6aed7
Doctest for observer
gyermolenko May 1, 2019
5aed472
Doctest for lazy_evaluation
gyermolenko May 1, 2019
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90 changes: 41 additions & 49 deletions patterns/behavioral/observer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -64,52 +64,44 @@ def update(self, subject):

# Example usage...
def main():
data1 = Data('Data 1')
data2 = Data('Data 2')
view1 = DecimalViewer()
view2 = HexViewer()
data1.attach(view1)
data1.attach(view2)
data2.attach(view2)
data2.attach(view1)

print(u"Setting Data 1 = 10")
data1.data = 10
print(u"Setting Data 2 = 15")
data2.data = 15
print(u"Setting Data 1 = 3")
data1.data = 3
print(u"Setting Data 2 = 5")
data2.data = 5
print(u"Detach HexViewer from data1 and data2.")
data1.detach(view2)
data2.detach(view2)
print(u"Setting Data 1 = 10")
data1.data = 10
print(u"Setting Data 2 = 15")
data2.data = 15


if __name__ == '__main__':
main()


OUTPUT = """
Setting Data 1 = 10
DecimalViewer: Subject Data 1 has data 10
HexViewer: Subject Data 1 has data 0xa
Setting Data 2 = 15
HexViewer: Subject Data 2 has data 0xf
DecimalViewer: Subject Data 2 has data 15
Setting Data 1 = 3
DecimalViewer: Subject Data 1 has data 3
HexViewer: Subject Data 1 has data 0x3
Setting Data 2 = 5
HexViewer: Subject Data 2 has data 0x5
DecimalViewer: Subject Data 2 has data 5
Detach HexViewer from data1 and data2.
Setting Data 1 = 10
DecimalViewer: Subject Data 1 has data 10
Setting Data 2 = 15
DecimalViewer: Subject Data 2 has data 15
"""
"""
>>> data1 = Data('Data 1')
>>> data2 = Data('Data 2')
>>> view1 = DecimalViewer()
>>> view2 = HexViewer()
>>> data1.attach(view1)
>>> data1.attach(view2)
>>> data2.attach(view2)
>>> data2.attach(view1)

>>> data1.data = 10
DecimalViewer: Subject Data 1 has data 10
HexViewer: Subject Data 1 has data 0xa

>>> data2.data = 15
HexViewer: Subject Data 2 has data 0xf
DecimalViewer: Subject Data 2 has data 15

>>> data1.data = 3
DecimalViewer: Subject Data 1 has data 3
HexViewer: Subject Data 1 has data 0x3

>>> data2.data = 5
HexViewer: Subject Data 2 has data 0x5
DecimalViewer: Subject Data 2 has data 5

# Detach HexViewer from data1 and data2
>>> data1.detach(view2)
>>> data2.detach(view2)

>>> data1.data = 10
DecimalViewer: Subject Data 1 has data 10

>>> data2.data = 15
DecimalViewer: Subject Data 2 has data 15
"""


if __name__ == "__main__":
import doctest
doctest.testmod()
63 changes: 36 additions & 27 deletions patterns/creational/lazy_evaluation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -70,30 +70,39 @@ def parents(self):


def main():
Jhon = Person('Jhon', 'Coder')
print(u"Name: {0} Occupation: {1}".format(Jhon.name, Jhon.occupation))
print(u"Before we access `relatives`:")
print(Jhon.__dict__)
print(u"Jhon's relatives: {0}".format(Jhon.relatives))
print(u"After we've accessed `relatives`:")
print(Jhon.__dict__)
print(Jhon.parents)
print(Jhon.__dict__)
print(Jhon.parents)
print(Jhon.call_count2)


if __name__ == '__main__':
main()

### OUTPUT ###
# Name: Jhon Occupation: Coder
# Before we access `relatives`:
# {'call_count2': 0, 'name': 'Jhon', 'occupation': 'Coder'}
# Jhon's relatives: Many relatives.
# After we've accessed `relatives`:
# {'relatives': 'Many relatives.', 'call_count2': 0, 'name': 'Jhon', 'occupation': 'Coder'}
# Father and mother
# {'_lazy__parents': 'Father and mother', 'relatives': 'Many relatives.', 'call_count2': 1, 'name': 'Jhon', 'occupation': 'Coder'} # noqa flake8
# Father and mother
# 1
"""
>>> Jhon = Person('Jhon', 'Coder')

>>> Jhon.name
'Jhon'
>>> Jhon.occupation
'Coder'

# Before we access `relatives`
>>> sorted(Jhon.__dict__.items())
[('call_count2', 0), ('name', 'Jhon'), ('occupation', 'Coder')]

>>> Jhon.relatives
'Many relatives.'

# After we've accessed `relatives`
>>> sorted(Jhon.__dict__.items())
[('call_count2', 0), ..., ('relatives', 'Many relatives.')]

>>> Jhon.parents
'Father and mother'

>>> sorted(Jhon.__dict__.items())
[('_lazy__parents', 'Father and mother'), ('call_count2', 1), ..., ('relatives', 'Many relatives.')]

>>> Jhon.parents
'Father and mother'

>>> Jhon.call_count2
1
"""


if __name__ == "__main__":
import doctest
doctest.testmod(optionflags=doctest.ELLIPSIS)
3 changes: 0 additions & 3 deletions tests/test_outputs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,8 +8,6 @@

import pytest

from patterns.behavioral.observer import main as observer_main
from patterns.behavioral.observer import OUTPUT as observer_output
from patterns.behavioral.publish_subscribe import main as publish_subscribe_main
from patterns.behavioral.publish_subscribe import OUTPUT as publish_subscribe_output
from patterns.behavioral.specification import main as specification_main
Expand All @@ -21,7 +19,6 @@
@pytest.mark.skipif(sys.version_info < (3,4),
reason="requires python3.4 or higher")
@pytest.mark.parametrize("main,output", [
(observer_main, observer_output),
(publish_subscribe_main, publish_subscribe_output),
(specification_main, specification_output),
(state_main, state_output),
Expand Down