/usr/lib/python2.7/dist-packages/chaco/tests/instantiation_order_test_case.py is in python-chaco 4.5.0-1.
This file is owned by root:root, with mode 0o644.
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Tests that various plot and data objects can be instantiated, assigned, and
re-assigned in any order.
"""
import unittest
from numpy import array
from chaco.api import ArrayDataSource, DataRange1D, \
LinearMapper
class DataPipelineTestCase(unittest.TestCase):
def test_piecewise_construction(self):
ary = array([1,2,3,4,5,6,7])
ds = ArrayDataSource()
ds.set_data(ary)
r = DataRange1D()
r.add(ds)
self.assert_(r.low_setting == "auto")
self.assert_(r.high_setting == "auto")
self.assert_(r.low == 1)
self.assert_(r.high == 7)
mapper = LinearMapper()
mapper.range = r
mapper.low_pos = 1.0
mapper.high_pos = 7.0
screen_pts = mapper.map_screen(array([1,3,7]))
self.assert_(tuple(screen_pts) == (1.0, 3.0, 7.0))
return
def test_reverse_construction(self):
mapper = LinearMapper()
r = DataRange1D()
ds = ArrayDataSource()
ary = array([1,2,3,4,5,6,7])
mapper.range = r
mapper.low_pos = 1.0
mapper.high_pos = 7.0
r.add(ds)
ds.set_data(ary)
self.assert_(r.low == 1)
self.assert_(r.high == 7)
screen_pts = mapper.map_screen(array([1,3,7]))
self.assert_(tuple(screen_pts) == (1.0, 3.0, 7.0))
return
if __name__ == '__main__':
import nose
nose.run()
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