def context_factory(self):
""" Return the type of context we are testing.
"""
data_context=DataContext()
context = AdaptedDataContext(context=data_context)
name = self.key_name()
getitem_units = {name:meters/second}
adapter = UnitConversionAdapter(getitem_units=getitem_units)
context.push_adapter(adapter)
return context
def setUp(self):
unittest.TestCase.setUp(self)
# Set up data for the contexts
depth = linspace(0.0, 100.0, 11)
lith = array(['sand'] * len(depth), dtype=object)
# Create the contexts
self.context = AdaptedDataContext(context=DataContext())
self.raw_context = self.context.context
# Add data (before creating the adapter)
self.context.update(depth=depth, lith=lith)
# Add an adapter
self.mask = (20.0 <= depth) & (depth <= 50.0)
self.adapter = MaskingAdapter(mask=self.mask)
self.context.push_adapter(self.adapter)
def setUp(self):
unittest.TestCase.setUp(self)
# Put unit adapters on either side of a masking adapter to see if they
# cooperate. Store meters in the raw context, push fathoms through the
# mask, and expose feet to the outside world.
self.units = units = { 'in':meters, 'mid':fathom, 'out':feet }
# Set up data for the contexts
depth = Log(linspace(0.0, 100.0, 11), units=units['in'])
lith = array(['sand']*len(depth), dtype=object)
# Create the contexts
self.context = AdaptedDataContext(context=DataContext())
self.raw_context = self.context.context
# Add data (before creating the adapters)
self.context.update(depth=depth, lith=lith)
# (This simplifies creating UnitConversionAdapters)
def always(value):
class C(dict):
def get(self, key, default=None):
return value
def __repr__(self):
return '{*:%r}' % value
return C()
# Layer multiple adapters
self.mask = (15.0 < depth) & (depth < 55.0)
self.convert_out = lambda x: convert(x, units['in'], units['out'])
self.convert_in = lambda x: convert(x, units['out'], units['in'])
#self.context.push_adapter(
# UnitConversionAdapter(setitem_units=always(units['in']),
# getitem_units=always(units['mid'])))
self.context.push_adapter(MaskingAdapter(mask=self.mask))
self.context.push_adapter(
# UnitConversionAdapter(setitem_units=always(units['mid']),
UnitConversionAdapter(setitem_units=always(units['in']),
getitem_units=always(units['out'])))
def setUp(self):
self.context = AdaptedDataContext(context=DataContext())
