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"""Test operator support in VTK-Python
The following operators are supported:
- The << operator becomes python str() and print()
- The < <= == != > >= operators become richcompare
- The [int] operator become the sequence protocol
The following operators are not yet supported:
- The () operator
- The [] operator for the mapping protocol
- Arithmetic operators + - * / %
Created on May 7, 2011 by David Gobbi
"""
import sys
import vtk
from vtk.test import Testing
class TestOperators(Testing.vtkTest):
def testPrint(self):
"""Use str slot"""
c1 = vtk.vtkArrayRange(3,4)
s1 = str(c1)
s2 = '[3, 4)'
self.assertEqual(s1, s2)
def testCompare(self):
"""Use comparison operators"""
c1 = vtk.vtkArrayRange(3,4)
c2 = vtk.vtkArrayRange(3,4)
# will fail if the "==" operator is not wrapped
self.assertEqual(c1, c2)
def testSequence(self):
"""Use sequence operators"""
c1 = vtk.vtkArrayCoordinates()
c1.SetDimensions(3)
n = len(c1) # sq_length slot
self.assertEqual(n, 3)
c1[1] = 5 # sq_ass_item slot
n = c1[1] # sq_item slot
self.assertEqual(n, 5)
r = vtk.vtkArrayRange(3,4)
e = vtk.vtkArrayExtents()
e.SetDimensions(2)
e[0] = r
s = e[0]
self.assertEqual(s, r)
if __name__ == "__main__":
Testing.main([(TestOperators, 'test')])
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