/usr/lib/python2.7/dist-packages/matplotlib/tests/test_legend.py is in python-matplotlib 1.4.2-3.1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | from __future__ import (absolute_import, division, print_function,
unicode_literals)
import six
from six.moves import xrange
try:
# mock in python 3.3+
from unittest import mock
except ImportError:
import mock
from nose.tools import assert_equal
import numpy as np
from matplotlib.testing.decorators import image_comparison, cleanup
from matplotlib.cbook import MatplotlibDeprecationWarning
import matplotlib.pyplot as plt
import matplotlib as mpl
import matplotlib.patches as mpatches
@image_comparison(baseline_images=['legend_auto1'], remove_text=True)
def test_legend_auto1():
'Test automatic legend placement'
fig = plt.figure()
ax = fig.add_subplot(111)
x = np.arange(100)
ax.plot(x, 50 - x, 'o', label='y=1')
ax.plot(x, x - 50, 'o', label='y=-1')
ax.legend(loc=0)
@image_comparison(baseline_images=['legend_auto2'], remove_text=True)
def test_legend_auto2():
'Test automatic legend placement'
fig = plt.figure()
ax = fig.add_subplot(111)
x = np.arange(100)
b1 = ax.bar(x, x, color='m')
b2 = ax.bar(x, x[::-1], color='g')
ax.legend([b1[0], b2[0]], ['up', 'down'], loc=0)
@image_comparison(baseline_images=['legend_auto3'])
def test_legend_auto3():
'Test automatic legend placement'
fig = plt.figure()
ax = fig.add_subplot(111)
x = [0.9, 0.1, 0.1, 0.9, 0.9, 0.5]
y = [0.95, 0.95, 0.05, 0.05, 0.5, 0.5]
ax.plot(x, y, 'o-', label='line')
ax.set_xlim(0.0, 1.0)
ax.set_ylim(0.0, 1.0)
ax.legend(loc=0)
@image_comparison(baseline_images=['legend_various_labels'], remove_text=True)
def test_various_labels():
# tests all sorts of label types
fig = plt.figure()
ax = fig.add_subplot(121)
ax.plot(list(xrange(4)), 'o', label=1)
ax.plot(np.linspace(4, 4.1), 'o', label='D\xe9velopp\xe9s')
ax.plot(list(xrange(4, 1, -1)), 'o', label='__nolegend__')
ax.legend(numpoints=1, loc=0)
@image_comparison(baseline_images=['fancy'], remove_text=True)
def test_fancy():
# using subplot triggers some offsetbox functionality untested elsewhere
plt.subplot(121)
plt.scatter(list(xrange(10)), list(xrange(10, 0, -1)), label='XX\nXX')
plt.plot([5] * 10, 'o--', label='XX')
plt.errorbar(list(xrange(10)), list(xrange(10)), xerr=0.5, yerr=0.5, label='XX')
plt.legend(loc="center left", bbox_to_anchor=[1.0, 0.5],
ncol=2, shadow=True, title="My legend", numpoints=1)
@image_comparison(baseline_images=['framealpha'], remove_text=True)
def test_framealpha():
x = np.linspace(1, 100, 100)
y = x
plt.plot(x, y, label='mylabel', lw=10)
plt.legend(framealpha=0.5)
@image_comparison(baseline_images=['scatter_rc3', 'scatter_rc1'], remove_text=True)
def test_rc():
# using subplot triggers some offsetbox functionality untested elsewhere
fig = plt.figure()
ax = plt.subplot(121)
ax.scatter(list(xrange(10)), list(xrange(10, 0, -1)), label='three')
ax.legend(loc="center left", bbox_to_anchor=[1.0, 0.5],
title="My legend")
mpl.rcParams['legend.scatterpoints'] = 1
fig = plt.figure()
ax = plt.subplot(121)
ax.scatter(list(xrange(10)), list(xrange(10, 0, -1)), label='one')
ax.legend(loc="center left", bbox_to_anchor=[1.0, 0.5],
title="My legend")
@image_comparison(baseline_images=['legend_expand'], remove_text=True)
def test_legend_expand():
'Test expand mode'
legend_modes = [None, "expand"]
fig, axes_list = plt.subplots(len(legend_modes), 1)
x = np.arange(100)
for ax, mode in zip(axes_list, legend_modes):
ax.plot(x, 50 - x, 'o', label='y=1')
l1 = ax.legend(loc=2, mode=mode)
ax.add_artist(l1)
ax.plot(x, x - 50, 'o', label='y=-1')
l2 = ax.legend(loc=5, mode=mode)
ax.add_artist(l2)
ax.legend(loc=3, mode=mode, ncol=2)
@cleanup
def test_legend_remove():
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
lines = ax.plot(range(10))
leg = fig.legend(lines, "test")
leg.remove()
assert_equal(fig.legends, [])
leg = ax.legend("test")
leg.remove()
assert ax.get_legend() is None
class TestLegendFunction(object):
# Tests the legend function on the Axes and pyplot.
deprecation_message = ('The "loc" positional argument '
'to legend is deprecated. Please use '
'the "loc" keyword instead.')
@cleanup
def test_legend_label_loc_args(self):
# Check the deprecated warning is created and that the appropriate
# call to Legend is made. This wouldn't actually create a valid
# legend as there is no artist to legendify, but that doesn't matter.
with mock.patch('matplotlib.cbook.warn_deprecated') as deprecation:
with mock.patch('matplotlib.legend.Legend') as Legend:
plt.legend(['hello world'], 1)
deprecation.assert_called_with('1.4', self.deprecation_message)
Legend.assert_called_with(plt.gca(), [], ['hello world'], loc=1)
@cleanup
def test_old_legend_handler_interface(self):
# Check the deprecated warning is created and that the appropriate
# call to the legend handler is made.
class AnyObject(object):
pass
class AnyObjectHandler(object):
def __call__(self, legend, orig_handle, fontsize, handlebox):
x0, y0 = handlebox.xdescent, handlebox.ydescent
width, height = handlebox.width, handlebox.height
patch = mpatches.Rectangle([x0, y0], width, height, facecolor='red',
edgecolor='black', hatch='xx', lw=3,
transform=handlebox.get_transform())
handlebox.add_artist(patch)
return patch
with mock.patch('warnings.warn') as warn:
plt.legend([None], ['My first handler'],
handler_map={None: AnyObjectHandler()})
warn.assert_called_with('Legend handers must now implement a '
'"legend_artist" method rather than '
'being a callable.',
MatplotlibDeprecationWarning,
stacklevel=1)
@cleanup
def test_legend_handle_label_loc_args(self):
# Check the deprecated warning is created and that the appropriate
# call to Legend is made.
lines = plt.plot(range(10))
with mock.patch('matplotlib.cbook.warn_deprecated') as deprecation:
with mock.patch('matplotlib.legend.Legend') as Legend:
plt.legend(lines, ['hello world'], 1)
deprecation.assert_called_with('1.4', self.deprecation_message)
Legend.assert_called_with(plt.gca(), lines, ['hello world'], loc=1)
@cleanup
def test_legend_handle_label(self):
lines = plt.plot(range(10))
with mock.patch('matplotlib.legend.Legend') as Legend:
plt.legend(lines, ['hello world'])
Legend.assert_called_with(plt.gca(), lines, ['hello world'])
@cleanup
def test_legend_no_args(self):
lines = plt.plot(range(10), label='hello world')
with mock.patch('matplotlib.legend.Legend') as Legend:
plt.legend()
Legend.assert_called_with(plt.gca(), lines, ['hello world'])
@cleanup
def test_legend_label_args(self):
lines = plt.plot(range(10), label='hello world')
with mock.patch('matplotlib.legend.Legend') as Legend:
plt.legend(['foobar'])
Legend.assert_called_with(plt.gca(), lines, ['foobar'])
@cleanup
def test_legend_handler_map(self):
lines = plt.plot(range(10), label='hello world')
with mock.patch('matplotlib.axes.Axes.'
'get_legend_handles_labels') as handles_labels:
handles_labels.return_value = lines, ['hello world']
plt.legend(handler_map={'1': 2})
handles_labels.assert_called_with({'1': 2})
if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s', '--with-doctest'], exit=False)
|