WIP-pyshapelib-bramz/test/test_mockgeo.py

# Copyright (C) 2003 by Intevation GmbH
# Authors:
# Bernhard Herzog <[email protected]>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with the software for details.

"""Test cases for the mockgeo helper objects"""

__version__ = "$Revision$"
# $Source$
# $Id$

import unittest

import mockgeo

import support

class TestAffineProjection(unittest.TestCase, support.FloatComparisonMixin):

    def test_forward(self):
        """Test AffineProjection.Forward()"""
        proj = mockgeo.AffineProjection((0.25, 0.1, 2, 0.125, 100.75, 123.25))
        self.assertEquals(proj.Forward(0, 0), (100.75, 123.25))
        self.assertEquals(proj.Forward(10.0, 20.0), (143.25, 126.75))
        self.assertEquals(proj.Forward(30, 0.125), (108.5, 126.265625))

    def test_inverse(self):
        """Test AffineProjection.Inverse()"""
        proj = mockgeo.AffineProjection((0.25, 0.1, 2, 0.125, 100.75, 123.25))
        self.assertEquals(proj.Inverse(100.75, 123.25), (0, 0))
        self.assertEquals(proj.Inverse(143.25, 126.75), (10.0, 20.0))
        self.assertFloatSeqEqual(proj.Inverse(108.5, 126.265625), (30, 0.125))

    def test_int_coeff(self):
        """Test AffineProjection with integer coefficients"""
        proj = mockgeo.AffineProjection((1, 1, -1, 1, 0, 0))
        # The determinant is an int too but must be treated as a float
        # when dividing by it otherwise some coefficients in the inverse
        # become wrong.
        self.assertEquals(proj.Inverse(10, 10), (10, 0))


if __name__ == "__main__":
    support.run_tests()
1	# Copyright (C) 2003 by Intevation GmbH
2	# Authors:
3	# Bernhard Herzog <[email protected]>
4	#
5	# This program is free software under the GPL (>=v2)
6	# Read the file COPYING coming with the software for details.
7
8	"""Test cases for the mockgeo helper objects"""
9
10	__version__ = "$Revision$"
11	# $Source$
12	# $Id$
13
14	import unittest
15
16	import mockgeo
17
18	import support
19
20	class TestAffineProjection(unittest.TestCase, support.FloatComparisonMixin):
21
22	def test_forward(self):
23	"""Test AffineProjection.Forward()"""
24	proj = mockgeo.AffineProjection((0.25, 0.1, 2, 0.125, 100.75, 123.25))
25	self.assertEquals(proj.Forward(0, 0), (100.75, 123.25))
26	self.assertEquals(proj.Forward(10.0, 20.0), (143.25, 126.75))
27	self.assertEquals(proj.Forward(30, 0.125), (108.5, 126.265625))
28
29	def test_inverse(self):
30	"""Test AffineProjection.Inverse()"""
31	proj = mockgeo.AffineProjection((0.25, 0.1, 2, 0.125, 100.75, 123.25))
32	self.assertEquals(proj.Inverse(100.75, 123.25), (0, 0))
33	self.assertEquals(proj.Inverse(143.25, 126.75), (10.0, 20.0))
34	self.assertFloatSeqEqual(proj.Inverse(108.5, 126.265625), (30, 0.125))
35
36	def test_int_coeff(self):
37	"""Test AffineProjection with integer coefficients"""
38	proj = mockgeo.AffineProjection((1, 1, -1, 1, 0, 0))
39	# The determinant is an int too but must be treated as a float
40	# when dividing by it otherwise some coefficients in the inverse
41	# become wrong.
42	self.assertEquals(proj.Inverse(10, 10), (10, 0))
43
44
45
46	if __name__ == "__main__":
47	support.run_tests()
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