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# Copyright (c) 2007-2010 by Lorenzo Gil Sanchez <lorenzo.gil.sanchez@gmail.com>
#
# This file is part of PyCha.
#
# PyCha is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# PyCha is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PyCha. If not, see <http://www.gnu.org/licenses/>.
import unittest
import cairo
import pycha.line
class PointTests(unittest.TestCase):
def test_point(self):
point = pycha.line.Point(2, 3, 1.0, 2.0, "test")
self.assertEqual(point.x, 2)
self.assertEqual(point.y, 3)
self.assertEqual(point.xval, 1.0)
self.assertEqual(point.yval, 2.0)
self.assertEqual(point.name, "test")
class LineTests(unittest.TestCase):
def test_init(self):
ch = pycha.line.LineChart(None)
self.assertEqual(ch.points, [])
def test_updateChart(self):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 500, 500)
dataset = (
('dataset1', ([0, 1], [1, 1], [2, 3])),
('dataset2', ([0, 2], [1, 0], [3, 4])),
)
ch = pycha.line.LineChart(surface)
ch.addDataset(dataset)
ch._updateXY()
ch._updateChart()
self.assertEqual(ch.minxval, 0)
self.assertEqual(ch.maxxval, 3)
self.assertEqual(ch.xrange, 3)
self.assertAlmostEqual(ch.xscale, 1/3.0, 4)
self.assertEqual(ch.minyval, 0)
self.assertEqual(ch.maxyval, 4)
self.assertEqual(ch.yrange, 4)
self.assertAlmostEqual(ch.yscale, 0.25, 4)
points = (
pycha.line.Point(0, 0.75, 0, 1, 'dataset1'),
pycha.line.Point(1/3.0, 0.75, 1, 1, 'dataset1'),
pycha.line.Point(2/3.0, 0.25, 2, 3, 'dataset1'),
pycha.line.Point(0, 0.5, 0, 2, 'dataset2'),
pycha.line.Point(1/3.0, 1, 1, 0, 'dataset2'),
pycha.line.Point(1, 0, 3, 4, 'dataset2'),
)
for i, point in enumerate(points):
p1, p2 = ch.points[i], point
self.assertEqual(p1.x, p2.x)
self.assertEqual(p1.y, p2.y)
self.assertAlmostEqual(p1.xval, p2.xval, 4)
self.assertAlmostEqual(p1.yval, p2.yval, 4)
self.assertEqual(p1.name, p2.name)
def test_updateChartWithNegatives(self):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 500, 500)
dataset = (
('dataset1', ([0, 1], [1, -2], [2, 3])),
('dataset2', ([0, 2], [1, 0], [3, -4])),
)
ch = pycha.line.LineChart(surface)
ch.addDataset(dataset)
ch._updateXY()
ch._updateChart()
self.assertEqual(ch.minxval, 0)
self.assertEqual(ch.maxxval, 3)
self.assertEqual(ch.xrange, 3)
self.assertAlmostEqual(ch.xscale, 1/3.0, 4)
self.assertEqual(ch.minyval, -4)
self.assertEqual(ch.maxyval, 3)
self.assertEqual(ch.yrange, 7)
self.assertAlmostEqual(ch.yscale, 1/7.0, 4)
points = (
pycha.line.Point(0, 0.2857, 0, 1, 'dataset1'),
pycha.line.Point(1/3.0, 0.7143, 1, -2, 'dataset1'),
pycha.line.Point(2/3.0, 0.0, 2, 3, 'dataset1'),
pycha.line.Point(0, 0.1429, 0, 2, 'dataset2'),
pycha.line.Point(1/3.0, 0.4286, 1, 0, 'dataset2'),
pycha.line.Point(1, 1.0, 3, -4, 'dataset2'),
)
for i, point in enumerate(points):
p1, p2 = ch.points[i], point
self.assertAlmostEqual(p1.x, p2.x, 4)
self.assertAlmostEqual(p1.y, p2.y, 4)
self.assertAlmostEqual(p1.xval, p2.xval, 4)
self.assertAlmostEqual(p1.yval, p2.yval, 4)
self.assertEqual(p1.name, p2.name)
def test_suite():
return unittest.TestSuite((
unittest.makeSuite(PointTests),
unittest.makeSuite(LineTests),
))
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')
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