def test_filter(self):
"""DataFlow filtering should behave as the filter base function
"""
left = dataflow.DataFlow(body=['left'])
right = dataflow.DataFlow(body=['right'])
assert (left + right).filter(lambda x: x == 'right').body == filter(
lambda x: x == 'right', (left + right).body)
def test_add(self):
"""DataFlow summation should result in a new DataFlow
with concatenated body
"""
left = dataflow.DataFlow(body=['left'])
right = dataflow.DataFlow(body=['right'])
assert (left + right).body == ['left', 'right']
def test_sortby(self):
"""DataFlow sorting should behave as the sorted base function
"""
flow = dataflow.DataFlow(body=[2, 3, 1])
assert flow.sortby(lambda x: x).body == sorted(flow.body,
key=lambda x: x)
def test_reduce(self):
"""DataFlow reducing should behave as the reduce base function
"""
flow = dataflow.DataFlow(body=['a', 'b', 'c'])
assert flow.reduce(lambda a, b: a + b,
'') == reduce(lambda a, b: a + b, flow.body)
def test_init(self):
"""DataFlow body should be a copy of input list at init
"""
flow = dataflow.DataFlow(body=['a', 'b', 'c'])
assert flow.list() == ['a', 'b', 'c']
def test_dataflow(self):
"""DataFlow object should have a body attribute
"""
flow = dataflow.DataFlow(body=['a', 'b', 'c'])
assert hasattr(flow, 'body')