/usr/share/pyshared/matplotlib/tests/test_backend_pgf.py is in python-matplotlib 1.3.1-1ubuntu5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | # -*- encoding: utf-8 -*-
import os
import shutil
import numpy as np
import nose
from nose.plugins.skip import SkipTest
import matplotlib as mpl
import matplotlib.pyplot as plt
from matplotlib.compat import subprocess
from matplotlib.testing.compare import compare_images, ImageComparisonFailure
from matplotlib.testing.decorators import _image_directories
baseline_dir, result_dir = _image_directories(lambda: 'dummy func')
def check_for(texsystem):
header = r"""
\documentclass{minimal}
\usepackage{pgf}
\begin{document}
\typeout{pgfversion=\pgfversion}
\makeatletter
\@@end
"""
try:
latex = subprocess.Popen(["xelatex", "-halt-on-error"],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
stdout, stderr = latex.communicate(header.encode("utf8"))
except OSError:
return False
return latex.returncode == 0
def switch_backend(backend):
def switch_backend_decorator(func):
def backend_switcher(*args, **kwargs):
try:
prev_backend = mpl.get_backend()
mpl.rcdefaults()
plt.switch_backend(backend)
result = func(*args, **kwargs)
finally:
plt.switch_backend(prev_backend)
return result
return nose.tools.make_decorator(func)(backend_switcher)
return switch_backend_decorator
def compare_figure(fname):
actual = os.path.join(result_dir, fname)
plt.savefig(actual)
expected = os.path.join(result_dir, "expected_%s" % fname)
shutil.copyfile(os.path.join(baseline_dir, fname), expected)
err = compare_images(expected, actual, tol=14)
if err:
raise ImageComparisonFailure('images not close: %s vs. %s' % (actual, expected))
###############################################################################
def create_figure():
plt.figure()
x = np.linspace(0, 1, 15)
plt.plot(x, x**2, "b-")
plt.fill_between([0., .4], [.4, 0.], hatch='//', facecolor="lightgray", edgecolor="red")
plt.plot(x, 1-x**2, "g>")
plt.plot([0.9], [0.5], "ro", markersize=3)
plt.text(0.9, 0.5, u'unicode (ü, °, µ) and math ($\\mu_i = x_i^2$)', ha='right', fontsize=20)
plt.ylabel(u'sans-serif with math $\\frac{\\sqrt{x}}{y^2}$..', family='sans-serif')
# test compiling a figure to pdf with xelatex
@switch_backend('pgf')
def test_xelatex():
if not check_for('xelatex'):
raise SkipTest('xelatex + pgf is required')
rc_xelatex = {'font.family': 'serif',
'pgf.rcfonts': False,}
mpl.rcParams.update(rc_xelatex)
create_figure()
compare_figure('pgf_xelatex.pdf')
# test compiling a figure to pdf with pdflatex
@switch_backend('pgf')
def test_pdflatex():
if not check_for('pdflatex'):
raise SkipTest('pdflatex + pgf is required')
rc_pdflatex = {'font.family': 'serif',
'pgf.rcfonts': False,
'pgf.texsystem': 'pdflatex',
'pgf.preamble': [r'\usepackage[utf8x]{inputenc}',
r'\usepackage[T1]{fontenc}']}
mpl.rcParams.update(rc_pdflatex)
create_figure()
compare_figure('pgf_pdflatex.pdf')
# test updating the rc parameters for each figure
@switch_backend('pgf')
def test_rcupdate():
if not check_for('xelatex') or not check_for('pdflatex'):
raise SkipTest('xelatex and pdflatex + pgf required')
rc_sets = []
rc_sets.append({'font.family': 'sans-serif',
'font.size': 30,
'figure.subplot.left': .2,
'lines.markersize': 10,
'pgf.rcfonts': False,
'pgf.texsystem': 'xelatex'})
rc_sets.append({'font.family': 'monospace',
'font.size': 10,
'figure.subplot.left': .1,
'lines.markersize': 20,
'pgf.rcfonts': False,
'pgf.texsystem': 'pdflatex',
'pgf.preamble': [r'\usepackage[utf8x]{inputenc}',
r'\usepackage[T1]{fontenc}',
r'\usepackage{sfmath}']})
for i, rc_set in enumerate(rc_sets):
mpl.rcParams.update(rc_set)
create_figure()
compare_figure('pgf_rcupdate%d.pdf' % (i+1))
# test backend-side clipping, since large numbers are not supported by TeX
@switch_backend('pgf')
def test_pathclip():
if not check_for('xelatex'):
raise SkipTest('xelatex + pgf is required')
plt.figure()
plt.plot([0., 1e100], [0., 1e100])
plt.xlim(0, 1)
plt.ylim(0, 1)
# this test passes if compiling/saving to pdf works (no image comparison)
plt.savefig(os.path.join(result_dir, "pgf_pathclip.pdf"))
# test mixed mode rendering
@switch_backend('pgf')
def test_mixedmode():
if not check_for('xelatex'):
raise SkipTest('xelatex + pgf is required')
Y, X = np.ogrid[-1:1:40j, -1:1:40j]
plt.figure()
plt.pcolor(X**2 + Y**2).set_rasterized(True)
compare_figure('pgf_mixedmode.pdf')
if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s','--with-doctest'], exit=False)
|