Spaces:
Running
Running
File size: 7,958 Bytes
3bb804c |
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 |
"""
Test output reproducibility.
"""
import os
import sys
import pytest
import matplotlib as mpl
from matplotlib import pyplot as plt
from matplotlib.cbook import get_sample_data
from matplotlib.collections import PathCollection
from matplotlib.image import BboxImage
from matplotlib.offsetbox import AnchoredOffsetbox, AuxTransformBox
from matplotlib.patches import Circle, PathPatch
from matplotlib.path import Path
from matplotlib.testing import subprocess_run_for_testing
from matplotlib.testing._markers import needs_ghostscript, needs_usetex
import matplotlib.testing.compare
from matplotlib.text import TextPath
from matplotlib.transforms import IdentityTransform
def _save_figure(objects='mhip', fmt="pdf", usetex=False):
mpl.use(fmt)
mpl.rcParams.update({'svg.hashsalt': 'asdf', 'text.usetex': usetex})
fig = plt.figure()
if 'm' in objects:
# use different markers...
ax1 = fig.add_subplot(1, 6, 1)
x = range(10)
ax1.plot(x, [1] * 10, marker='D')
ax1.plot(x, [2] * 10, marker='x')
ax1.plot(x, [3] * 10, marker='^')
ax1.plot(x, [4] * 10, marker='H')
ax1.plot(x, [5] * 10, marker='v')
if 'h' in objects:
# also use different hatch patterns
ax2 = fig.add_subplot(1, 6, 2)
bars = (ax2.bar(range(1, 5), range(1, 5)) +
ax2.bar(range(1, 5), [6] * 4, bottom=range(1, 5)))
ax2.set_xticks([1.5, 2.5, 3.5, 4.5])
patterns = ('-', '+', 'x', '\\', '*', 'o', 'O', '.')
for bar, pattern in zip(bars, patterns):
bar.set_hatch(pattern)
if 'i' in objects:
# also use different images
A = [[1, 2, 3], [2, 3, 1], [3, 1, 2]]
fig.add_subplot(1, 6, 3).imshow(A, interpolation='nearest')
A = [[1, 3, 2], [1, 2, 3], [3, 1, 2]]
fig.add_subplot(1, 6, 4).imshow(A, interpolation='bilinear')
A = [[2, 3, 1], [1, 2, 3], [2, 1, 3]]
fig.add_subplot(1, 6, 5).imshow(A, interpolation='bicubic')
if 'p' in objects:
# clipping support class, copied from demo_text_path.py gallery example
class PathClippedImagePatch(PathPatch):
"""
The given image is used to draw the face of the patch. Internally,
it uses BboxImage whose clippath set to the path of the patch.
FIXME : The result is currently dpi dependent.
"""
def __init__(self, path, bbox_image, **kwargs):
super().__init__(path, **kwargs)
self.bbox_image = BboxImage(
self.get_window_extent, norm=None, origin=None)
self.bbox_image.set_data(bbox_image)
def set_facecolor(self, color):
"""Simply ignore facecolor."""
super().set_facecolor("none")
def draw(self, renderer=None):
# the clip path must be updated every draw. any solution? -JJ
self.bbox_image.set_clip_path(self._path, self.get_transform())
self.bbox_image.draw(renderer)
super().draw(renderer)
# add a polar projection
px = fig.add_subplot(projection="polar")
pimg = px.imshow([[2]])
pimg.set_clip_path(Circle((0, 1), radius=0.3333))
# add a text-based clipping path (origin: demo_text_path.py)
(ax1, ax2) = fig.subplots(2)
arr = plt.imread(get_sample_data("grace_hopper.jpg"))
text_path = TextPath((0, 0), "!?", size=150)
p = PathClippedImagePatch(text_path, arr, ec="k")
offsetbox = AuxTransformBox(IdentityTransform())
offsetbox.add_artist(p)
ao = AnchoredOffsetbox(loc='upper left', child=offsetbox, frameon=True,
borderpad=0.2)
ax1.add_artist(ao)
# add a 2x2 grid of path-clipped axes (origin: test_artist.py)
exterior = Path.unit_rectangle().deepcopy()
exterior.vertices *= 4
exterior.vertices -= 2
interior = Path.unit_circle().deepcopy()
interior.vertices = interior.vertices[::-1]
clip_path = Path.make_compound_path(exterior, interior)
star = Path.unit_regular_star(6).deepcopy()
star.vertices *= 2.6
(row1, row2) = fig.subplots(2, 2, sharex=True, sharey=True)
for row in (row1, row2):
ax1, ax2 = row
collection = PathCollection([star], lw=5, edgecolor='blue',
facecolor='red', alpha=0.7, hatch='*')
collection.set_clip_path(clip_path, ax1.transData)
ax1.add_collection(collection)
patch = PathPatch(star, lw=5, edgecolor='blue', facecolor='red',
alpha=0.7, hatch='*')
patch.set_clip_path(clip_path, ax2.transData)
ax2.add_patch(patch)
ax1.set_xlim([-3, 3])
ax1.set_ylim([-3, 3])
x = range(5)
ax = fig.add_subplot(1, 6, 6)
ax.plot(x, x)
ax.set_title('A string $1+2+\\sigma$')
ax.set_xlabel('A string $1+2+\\sigma$')
ax.set_ylabel('A string $1+2+\\sigma$')
stdout = getattr(sys.stdout, 'buffer', sys.stdout)
fig.savefig(stdout, format=fmt)
@pytest.mark.parametrize(
"objects, fmt, usetex", [
("", "pdf", False),
("m", "pdf", False),
("h", "pdf", False),
("i", "pdf", False),
("mhip", "pdf", False),
("mhip", "ps", False),
pytest.param(
"mhip", "ps", True, marks=[needs_usetex, needs_ghostscript]),
("p", "svg", False),
("mhip", "svg", False),
pytest.param("mhip", "svg", True, marks=needs_usetex),
]
)
def test_determinism_check(objects, fmt, usetex):
"""
Output three times the same graphs and checks that the outputs are exactly
the same.
Parameters
----------
objects : str
Objects to be included in the test document: 'm' for markers, 'h' for
hatch patterns, 'i' for images, and 'p' for paths.
fmt : {"pdf", "ps", "svg"}
Output format.
"""
plots = [
subprocess_run_for_testing(
[sys.executable, "-R", "-c",
f"from matplotlib.tests.test_determinism import _save_figure;"
f"_save_figure({objects!r}, {fmt!r}, {usetex})"],
env={**os.environ, "SOURCE_DATE_EPOCH": "946684800",
"MPLBACKEND": "Agg"},
text=False, capture_output=True, check=True).stdout
for _ in range(3)
]
for p in plots[1:]:
if fmt == "ps" and usetex:
if p != plots[0]:
pytest.skip("failed, maybe due to ghostscript timestamps")
else:
assert p == plots[0]
@pytest.mark.parametrize(
"fmt, string", [
("pdf", b"/CreationDate (D:20000101000000Z)"),
# SOURCE_DATE_EPOCH support is not tested with text.usetex,
# because the produced timestamp comes from ghostscript:
# %%CreationDate: D:20000101000000Z00\'00\', and this could change
# with another ghostscript version.
("ps", b"%%CreationDate: Sat Jan 01 00:00:00 2000"),
]
)
def test_determinism_source_date_epoch(fmt, string):
"""
Test SOURCE_DATE_EPOCH support. Output a document with the environment
variable SOURCE_DATE_EPOCH set to 2000-01-01 00:00 UTC and check that the
document contains the timestamp that corresponds to this date (given as an
argument).
Parameters
----------
fmt : {"pdf", "ps", "svg"}
Output format.
string : bytes
Timestamp string for 2000-01-01 00:00 UTC.
"""
buf = subprocess_run_for_testing(
[sys.executable, "-R", "-c",
f"from matplotlib.tests.test_determinism import _save_figure; "
f"_save_figure('', {fmt!r})"],
env={**os.environ, "SOURCE_DATE_EPOCH": "946684800",
"MPLBACKEND": "Agg"}, capture_output=True, text=False, check=True).stdout
assert string in buf
|