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# Copyright (c) 2002, 2003 by Intevation GmbH
# Authors:
# Frank Koormann <frank.koormann@intevation.de>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.
"""
Test the Thuban export calculations
"""
__version__ = "$Revision: 1454 $"
# $Source$
# $Id: test_export.py 1454 2003-07-18 14:41:04Z bh $
import unittest
import support
support.initthuban()
from Thuban.UI.viewport import output_transform
class TestScalebar(unittest.TestCase, support.FloatComparisonMixin):
"""Test cases for the Thuban export calculations
"""
def test_output_transform(self):
"""Test output_transform()."""
scale, offset, mapregion = output_transform(1.0, (0,0),
(200, 100), (200, 100))
self.assertFloatEqual(0.3, scale)
self.assertFloatSeqEqual((0.0, 0.0), offset)
self.assertFloatSeqEqual((20.0, 20.0, 80.0, 80.0), mapregion)
scale, offset, mapregion = output_transform(1.0, (0,0),
(200, 100), (100, 200))
self.assertFloatEqual(0.16, scale)
self.assertFloatSeqEqual((0.0, 0.0), offset)
self.assertFloatSeqEqual((20.0, 20.0, 52.0, 52.0), mapregion)
scale, offset, mapregion = output_transform(1.0, (5,5),
(200, 100), (100, 100))
self.assertFloatEqual(0.16, scale)
self.assertFloatSeqEqual((0.8, 0.8), offset)
self.assertFloatSeqEqual((20.0, 20.0, 52.0, 52.0), mapregion)
scale, offset, mapregion = output_transform(1.0, (0,0),
(200, 100), (200, 200))
self.assertFloatEqual(0.52, scale)
self.assertFloatSeqEqual((0.0, 0.0), offset)
self.assertFloatSeqEqual((20, 20, 124.0, 124.0), mapregion)
if __name__ == "__main__":
unittest.main()
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