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#!/usr/bin/env python
# Copyright 2001 by Brad Chapman. All rights reserved.
# This code is part of the Biopython distribution and governed by its
# license. Please see the LICENSE file that should have been included
# as part of this package.
"""Test for graphics things that don't really deserve there own test module.
XXX Right now this test occasionally fails with a trace like:
File "/usr/local/lib/python2.1/site-packages/reportlab/graphics/
charts/lineplots.py", line 182, in calcPositions
datum = self.data[rowNo][colNo] # x,y value
IndexError: list index out of range
This appears to be a problem with reportlab, so I'm not worrying about
it right now, unless it starts to happen with real data! If anyone
can figure out the data that causes it so I can avoid it, that'd be much
appreciated.
"""
# standard library
import os
import random
import unittest
from Bio import MissingExternalDependencyError
try:
# Skip the test if reportlab is not installed
import reportlab as r
del r
except:
raise MissingExternalDependencyError(\
"Install reportlab if you want to use Bio.Graphics.")
# the stuff we're testing
from Bio.Graphics.Comparative import ComparativeScatterPlot
class ComparativeTest(unittest.TestCase):
"""Do tests for modules involved with comparing data.
"""
def setUp(self):
self.min_two_d_lists = 1
self.max_two_d_lists = 7
self.min_num_points = 1
self.max_num_points = 500
self.min_point_num = 0
self.max_point_num = 200
def _make_random_points(self):
"""Make a bunch of random points for testing plots.
"""
plot_info = []
num_two_d_lists = random.randrange(self.min_two_d_lists,
self.max_two_d_lists)
for two_d_list in range(num_two_d_lists):
cur_list = []
num_points = random.randrange(self.min_num_points,
self.max_num_points)
for point in range(num_points):
x_point = random.randrange(self.min_point_num,
self.max_point_num)
y_point = random.randrange(self.min_point_num,
self.max_point_num)
cur_list.append((x_point, y_point))
plot_info.append(cur_list)
return plot_info
def test_simple_scatter_plot(self):
"""Test creation of a simple ScatterPlot.
"""
compare_plot = ComparativeScatterPlot()
compare_plot.display_info = self._make_random_points()
output_file = os.path.join(os.getcwd(), "Graphics", "scatter_test.pdf")
try:
compare_plot.draw_to_file(output_file, "Testing Scatter Plots")
# there is a bug in reportlab which occasionally generates an
# error here.
except IndexError:
pass
if __name__ == "__main__":
runner = unittest.TextTestRunner(verbosity = 2)
unittest.main(testRunner=runner)
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