629 lines
24 KiB
Python
629 lines
24 KiB
Python
import copy
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import os
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from pathlib import Path
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import subprocess
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import sys
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from unittest import mock
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from cycler import cycler, Cycler
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import pytest
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import matplotlib as mpl
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from matplotlib import _api, _c_internal_utils
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import matplotlib.pyplot as plt
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import matplotlib.colors as mcolors
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import numpy as np
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from matplotlib.rcsetup import (
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validate_bool,
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validate_color,
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validate_colorlist,
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_validate_color_or_linecolor,
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validate_cycler,
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validate_float,
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validate_fontstretch,
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validate_fontweight,
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validate_hatch,
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validate_hist_bins,
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validate_int,
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validate_markevery,
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validate_stringlist,
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_validate_linestyle,
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_listify_validator)
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def test_rcparams(tmpdir):
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mpl.rc('text', usetex=False)
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mpl.rc('lines', linewidth=22)
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usetex = mpl.rcParams['text.usetex']
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linewidth = mpl.rcParams['lines.linewidth']
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rcpath = Path(tmpdir) / 'test_rcparams.rc'
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rcpath.write_text('lines.linewidth: 33', encoding='utf-8')
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# test context given dictionary
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with mpl.rc_context(rc={'text.usetex': not usetex}):
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assert mpl.rcParams['text.usetex'] == (not usetex)
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assert mpl.rcParams['text.usetex'] == usetex
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# test context given filename (mpl.rc sets linewidth to 33)
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with mpl.rc_context(fname=rcpath):
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assert mpl.rcParams['lines.linewidth'] == 33
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assert mpl.rcParams['lines.linewidth'] == linewidth
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# test context given filename and dictionary
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with mpl.rc_context(fname=rcpath, rc={'lines.linewidth': 44}):
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assert mpl.rcParams['lines.linewidth'] == 44
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assert mpl.rcParams['lines.linewidth'] == linewidth
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# test context as decorator (and test reusability, by calling func twice)
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@mpl.rc_context({'lines.linewidth': 44})
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def func():
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assert mpl.rcParams['lines.linewidth'] == 44
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func()
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func()
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# test rc_file
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mpl.rc_file(rcpath)
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assert mpl.rcParams['lines.linewidth'] == 33
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def test_RcParams_class():
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rc = mpl.RcParams({'font.cursive': ['Apple Chancery',
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'Textile',
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'Zapf Chancery',
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'cursive'],
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'font.family': 'sans-serif',
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'font.weight': 'normal',
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'font.size': 12})
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expected_repr = """
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RcParams({'font.cursive': ['Apple Chancery',
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'Textile',
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'Zapf Chancery',
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'cursive'],
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'font.family': ['sans-serif'],
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'font.size': 12.0,
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'font.weight': 'normal'})""".lstrip()
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assert expected_repr == repr(rc)
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expected_str = """
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font.cursive: ['Apple Chancery', 'Textile', 'Zapf Chancery', 'cursive']
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font.family: ['sans-serif']
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font.size: 12.0
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font.weight: normal""".lstrip()
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assert expected_str == str(rc)
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# test the find_all functionality
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assert ['font.cursive', 'font.size'] == sorted(rc.find_all('i[vz]'))
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assert ['font.family'] == list(rc.find_all('family'))
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def test_rcparams_update():
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rc = mpl.RcParams({'figure.figsize': (3.5, 42)})
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bad_dict = {'figure.figsize': (3.5, 42, 1)}
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# make sure validation happens on input
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with pytest.raises(ValueError):
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rc.update(bad_dict)
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def test_rcparams_init():
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with pytest.raises(ValueError):
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mpl.RcParams({'figure.figsize': (3.5, 42, 1)})
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def test_nargs_cycler():
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from matplotlib.rcsetup import cycler as ccl
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with pytest.raises(TypeError, match='3 were given'):
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# cycler() takes 0-2 arguments.
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ccl(ccl(color=list('rgb')), 2, 3)
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def test_Bug_2543():
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# Test that it possible to add all values to itself / deepcopy
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# https://github.com/matplotlib/matplotlib/issues/2543
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# We filter warnings at this stage since a number of them are raised
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# for deprecated rcparams as they should. We don't want these in the
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# printed in the test suite.
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with _api.suppress_matplotlib_deprecation_warning():
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with mpl.rc_context():
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_copy = mpl.rcParams.copy()
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for key in _copy:
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mpl.rcParams[key] = _copy[key]
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with mpl.rc_context():
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copy.deepcopy(mpl.rcParams)
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with pytest.raises(ValueError):
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validate_bool(None)
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with pytest.raises(ValueError):
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with mpl.rc_context():
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mpl.rcParams['svg.fonttype'] = True
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legend_color_tests = [
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('face', {'color': 'r'}, mcolors.to_rgba('r')),
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('face', {'color': 'inherit', 'axes.facecolor': 'r'},
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mcolors.to_rgba('r')),
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('face', {'color': 'g', 'axes.facecolor': 'r'}, mcolors.to_rgba('g')),
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('edge', {'color': 'r'}, mcolors.to_rgba('r')),
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('edge', {'color': 'inherit', 'axes.edgecolor': 'r'},
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mcolors.to_rgba('r')),
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('edge', {'color': 'g', 'axes.facecolor': 'r'}, mcolors.to_rgba('g'))
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]
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legend_color_test_ids = [
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'same facecolor',
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'inherited facecolor',
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'different facecolor',
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'same edgecolor',
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'inherited edgecolor',
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'different facecolor',
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]
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@pytest.mark.parametrize('color_type, param_dict, target', legend_color_tests,
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ids=legend_color_test_ids)
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def test_legend_colors(color_type, param_dict, target):
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param_dict[f'legend.{color_type}color'] = param_dict.pop('color')
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get_func = f'get_{color_type}color'
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with mpl.rc_context(param_dict):
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_, ax = plt.subplots()
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ax.plot(range(3), label='test')
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leg = ax.legend()
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assert getattr(leg.legendPatch, get_func)() == target
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def test_mfc_rcparams():
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mpl.rcParams['lines.markerfacecolor'] = 'r'
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ln = mpl.lines.Line2D([1, 2], [1, 2])
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assert ln.get_markerfacecolor() == 'r'
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def test_mec_rcparams():
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mpl.rcParams['lines.markeredgecolor'] = 'r'
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ln = mpl.lines.Line2D([1, 2], [1, 2])
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assert ln.get_markeredgecolor() == 'r'
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def test_axes_titlecolor_rcparams():
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mpl.rcParams['axes.titlecolor'] = 'r'
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_, ax = plt.subplots()
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title = ax.set_title("Title")
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assert title.get_color() == 'r'
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def test_Issue_1713(tmpdir):
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rcpath = Path(tmpdir) / 'test_rcparams.rc'
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rcpath.write_text('timezone: UTC', encoding='utf-8')
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with mock.patch('locale.getpreferredencoding', return_value='UTF-32-BE'):
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rc = mpl.rc_params_from_file(rcpath, True, False)
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assert rc.get('timezone') == 'UTC'
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def test_animation_frame_formats():
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# Animation frame_format should allow any of the following
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# if any of these are not allowed, an exception will be raised
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# test for gh issue #17908
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for fmt in ['png', 'jpeg', 'tiff', 'raw', 'rgba', 'ppm',
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'sgi', 'bmp', 'pbm', 'svg']:
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mpl.rcParams['animation.frame_format'] = fmt
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def generate_validator_testcases(valid):
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validation_tests = (
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{'validator': validate_bool,
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'success': (*((_, True) for _ in
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('t', 'y', 'yes', 'on', 'true', '1', 1, True)),
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*((_, False) for _ in
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('f', 'n', 'no', 'off', 'false', '0', 0, False))),
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'fail': ((_, ValueError)
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for _ in ('aardvark', 2, -1, [], ))
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},
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{'validator': validate_stringlist,
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'success': (('', []),
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('a,b', ['a', 'b']),
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('aardvark', ['aardvark']),
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('aardvark, ', ['aardvark']),
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('aardvark, ,', ['aardvark']),
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(['a', 'b'], ['a', 'b']),
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(('a', 'b'), ['a', 'b']),
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(iter(['a', 'b']), ['a', 'b']),
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(np.array(['a', 'b']), ['a', 'b']),
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),
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'fail': ((set(), ValueError),
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(1, ValueError),
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)
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},
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{'validator': _listify_validator(validate_int, n=2),
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'success': ((_, [1, 2])
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for _ in ('1, 2', [1.5, 2.5], [1, 2],
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(1, 2), np.array((1, 2)))),
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'fail': ((_, ValueError)
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for _ in ('aardvark', ('a', 1),
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(1, 2, 3)
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))
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},
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{'validator': _listify_validator(validate_float, n=2),
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'success': ((_, [1.5, 2.5])
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for _ in ('1.5, 2.5', [1.5, 2.5], [1.5, 2.5],
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(1.5, 2.5), np.array((1.5, 2.5)))),
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'fail': ((_, ValueError)
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for _ in ('aardvark', ('a', 1), (1, 2, 3), (None, ), None))
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},
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{'validator': validate_cycler,
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'success': (('cycler("color", "rgb")',
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cycler("color", 'rgb')),
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(cycler('linestyle', ['-', '--']),
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cycler('linestyle', ['-', '--'])),
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("""(cycler("color", ["r", "g", "b"]) +
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cycler("mew", [2, 3, 5]))""",
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(cycler("color", 'rgb') +
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cycler("markeredgewidth", [2, 3, 5]))),
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("cycler(c='rgb', lw=[1, 2, 3])",
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cycler('color', 'rgb') + cycler('linewidth', [1, 2, 3])),
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("cycler('c', 'rgb') * cycler('linestyle', ['-', '--'])",
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(cycler('color', 'rgb') *
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cycler('linestyle', ['-', '--']))),
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(cycler('ls', ['-', '--']),
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cycler('linestyle', ['-', '--'])),
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(cycler(mew=[2, 5]),
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cycler('markeredgewidth', [2, 5])),
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),
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# This is *so* incredibly important: validate_cycler() eval's
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# an arbitrary string! I think I have it locked down enough,
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# and that is what this is testing.
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# TODO: Note that these tests are actually insufficient, as it may
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# be that they raised errors, but still did an action prior to
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# raising the exception. We should devise some additional tests
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# for that...
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'fail': ((4, ValueError), # Gotta be a string or Cycler object
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('cycler("bleh, [])', ValueError), # syntax error
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('Cycler("linewidth", [1, 2, 3])',
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ValueError), # only 'cycler()' function is allowed
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# do not allow dunder in string literals
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("cycler('c', [j.__class__(j) for j in ['r', 'b']])",
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ValueError),
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("cycler('c', [j. __class__(j) for j in ['r', 'b']])",
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ValueError),
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("cycler('c', [j.\t__class__(j) for j in ['r', 'b']])",
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ValueError),
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("cycler('c', [j.\u000c__class__(j) for j in ['r', 'b']])",
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ValueError),
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("cycler('c', [j.__class__(j).lower() for j in ['r', 'b']])",
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ValueError),
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('1 + 2', ValueError), # doesn't produce a Cycler object
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('os.system("echo Gotcha")', ValueError), # os not available
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('import os', ValueError), # should not be able to import
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('def badjuju(a): return a; badjuju(cycler("color", "rgb"))',
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ValueError), # Should not be able to define anything
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# even if it does return a cycler
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('cycler("waka", [1, 2, 3])', ValueError), # not a property
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('cycler(c=[1, 2, 3])', ValueError), # invalid values
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("cycler(lw=['a', 'b', 'c'])", ValueError), # invalid values
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(cycler('waka', [1, 3, 5]), ValueError), # not a property
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(cycler('color', ['C1', 'r', 'g']), ValueError) # no CN
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)
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},
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{'validator': validate_hatch,
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'success': (('--|', '--|'), ('\\oO', '\\oO'),
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('/+*/.x', '/+*/.x'), ('', '')),
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'fail': (('--_', ValueError),
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(8, ValueError),
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('X', ValueError)),
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},
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{'validator': validate_colorlist,
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'success': (('r,g,b', ['r', 'g', 'b']),
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(['r', 'g', 'b'], ['r', 'g', 'b']),
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('r, ,', ['r']),
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(['', 'g', 'blue'], ['g', 'blue']),
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([np.array([1, 0, 0]), np.array([0, 1, 0])],
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np.array([[1, 0, 0], [0, 1, 0]])),
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(np.array([[1, 0, 0], [0, 1, 0]]),
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np.array([[1, 0, 0], [0, 1, 0]])),
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),
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'fail': (('fish', ValueError),
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),
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},
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{'validator': validate_color,
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'success': (('None', 'none'),
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('none', 'none'),
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('AABBCC', '#AABBCC'), # RGB hex code
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('AABBCC00', '#AABBCC00'), # RGBA hex code
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('tab:blue', 'tab:blue'), # named color
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('C12', 'C12'), # color from cycle
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('(0, 1, 0)', (0.0, 1.0, 0.0)), # RGB tuple
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((0, 1, 0), (0, 1, 0)), # non-string version
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('(0, 1, 0, 1)', (0.0, 1.0, 0.0, 1.0)), # RGBA tuple
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((0, 1, 0, 1), (0, 1, 0, 1)), # non-string version
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),
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'fail': (('tab:veryblue', ValueError), # invalid name
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('(0, 1)', ValueError), # tuple with length < 3
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('(0, 1, 0, 1, 0)', ValueError), # tuple with length > 4
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('(0, 1, none)', ValueError), # cannot cast none to float
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('(0, 1, "0.5")', ValueError), # last one not a float
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),
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},
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{'validator': _validate_color_or_linecolor,
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'success': (('linecolor', 'linecolor'),
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('markerfacecolor', 'markerfacecolor'),
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('mfc', 'markerfacecolor'),
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('markeredgecolor', 'markeredgecolor'),
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('mec', 'markeredgecolor')
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),
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'fail': (('line', ValueError),
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('marker', ValueError)
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)
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},
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{'validator': validate_hist_bins,
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'success': (('auto', 'auto'),
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('fd', 'fd'),
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('10', 10),
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('1, 2, 3', [1, 2, 3]),
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([1, 2, 3], [1, 2, 3]),
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(np.arange(15), np.arange(15))
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),
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'fail': (('aardvark', ValueError),
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)
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},
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{'validator': validate_markevery,
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'success': ((None, None),
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(1, 1),
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(0.1, 0.1),
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((1, 1), (1, 1)),
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((0.1, 0.1), (0.1, 0.1)),
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([1, 2, 3], [1, 2, 3]),
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(slice(2), slice(None, 2, None)),
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(slice(1, 2, 3), slice(1, 2, 3))
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),
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'fail': (((1, 2, 3), TypeError),
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([1, 2, 0.3], TypeError),
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(['a', 2, 3], TypeError),
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([1, 2, 'a'], TypeError),
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((0.1, 0.2, 0.3), TypeError),
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((0.1, 2, 3), TypeError),
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((1, 0.2, 0.3), TypeError),
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((1, 0.1), TypeError),
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((0.1, 1), TypeError),
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(('abc'), TypeError),
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((1, 'a'), TypeError),
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((0.1, 'b'), TypeError),
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(('a', 1), TypeError),
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(('a', 0.1), TypeError),
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('abc', TypeError),
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('a', TypeError),
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(object(), TypeError)
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)
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},
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{'validator': _validate_linestyle,
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'success': (('-', '-'), ('solid', 'solid'),
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('--', '--'), ('dashed', 'dashed'),
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('-.', '-.'), ('dashdot', 'dashdot'),
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(':', ':'), ('dotted', 'dotted'),
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('', ''), (' ', ' '),
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('None', 'none'), ('none', 'none'),
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('DoTtEd', 'dotted'), # case-insensitive
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('1, 3', (0, (1, 3))),
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([1.23, 456], (0, [1.23, 456.0])),
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([1, 2, 3, 4], (0, [1.0, 2.0, 3.0, 4.0])),
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((0, [1, 2]), (0, [1, 2])),
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((-1, [1, 2]), (-1, [1, 2])),
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),
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'fail': (('aardvark', ValueError), # not a valid string
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(b'dotted', ValueError),
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('dotted'.encode('utf-16'), ValueError),
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([1, 2, 3], ValueError), # sequence with odd length
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(1.23, ValueError), # not a sequence
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(("a", [1, 2]), ValueError), # wrong explicit offset
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((None, [1, 2]), ValueError), # wrong explicit offset
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((1, [1, 2, 3]), ValueError), # odd length sequence
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(([1, 2], 1), ValueError), # inverted offset/onoff
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)
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},
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)
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for validator_dict in validation_tests:
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validator = validator_dict['validator']
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if valid:
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for arg, target in validator_dict['success']:
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yield validator, arg, target
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else:
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for arg, error_type in validator_dict['fail']:
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yield validator, arg, error_type
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@pytest.mark.parametrize('validator, arg, target',
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generate_validator_testcases(True))
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def test_validator_valid(validator, arg, target):
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res = validator(arg)
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if isinstance(target, np.ndarray):
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np.testing.assert_equal(res, target)
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elif not isinstance(target, Cycler):
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assert res == target
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else:
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# Cyclers can't simply be asserted equal. They don't implement __eq__
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assert list(res) == list(target)
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@pytest.mark.parametrize('validator, arg, exception_type',
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generate_validator_testcases(False))
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|
def test_validator_invalid(validator, arg, exception_type):
|
|
with pytest.raises(exception_type):
|
|
validator(arg)
|
|
|
|
|
|
@pytest.mark.parametrize('weight, parsed_weight', [
|
|
('bold', 'bold'),
|
|
('BOLD', ValueError), # weight is case-sensitive
|
|
(100, 100),
|
|
('100', 100),
|
|
(np.array(100), 100),
|
|
# fractional fontweights are not defined. This should actually raise a
|
|
# ValueError, but historically did not.
|
|
(20.6, 20),
|
|
('20.6', ValueError),
|
|
([100], ValueError),
|
|
])
|
|
def test_validate_fontweight(weight, parsed_weight):
|
|
if parsed_weight is ValueError:
|
|
with pytest.raises(ValueError):
|
|
validate_fontweight(weight)
|
|
else:
|
|
assert validate_fontweight(weight) == parsed_weight
|
|
|
|
|
|
@pytest.mark.parametrize('stretch, parsed_stretch', [
|
|
('expanded', 'expanded'),
|
|
('EXPANDED', ValueError), # stretch is case-sensitive
|
|
(100, 100),
|
|
('100', 100),
|
|
(np.array(100), 100),
|
|
# fractional fontweights are not defined. This should actually raise a
|
|
# ValueError, but historically did not.
|
|
(20.6, 20),
|
|
('20.6', ValueError),
|
|
([100], ValueError),
|
|
])
|
|
def test_validate_fontstretch(stretch, parsed_stretch):
|
|
if parsed_stretch is ValueError:
|
|
with pytest.raises(ValueError):
|
|
validate_fontstretch(stretch)
|
|
else:
|
|
assert validate_fontstretch(stretch) == parsed_stretch
|
|
|
|
|
|
def test_keymaps():
|
|
key_list = [k for k in mpl.rcParams if 'keymap' in k]
|
|
for k in key_list:
|
|
assert isinstance(mpl.rcParams[k], list)
|
|
|
|
|
|
def test_no_backend_reset_rccontext():
|
|
assert mpl.rcParams['backend'] != 'module://aardvark'
|
|
with mpl.rc_context():
|
|
mpl.rcParams['backend'] = 'module://aardvark'
|
|
assert mpl.rcParams['backend'] == 'module://aardvark'
|
|
|
|
|
|
def test_rcparams_reset_after_fail():
|
|
# There was previously a bug that meant that if rc_context failed and
|
|
# raised an exception due to issues in the supplied rc parameters, the
|
|
# global rc parameters were left in a modified state.
|
|
with mpl.rc_context(rc={'text.usetex': False}):
|
|
assert mpl.rcParams['text.usetex'] is False
|
|
with pytest.raises(KeyError):
|
|
with mpl.rc_context(rc={'text.usetex': True, 'test.blah': True}):
|
|
pass
|
|
assert mpl.rcParams['text.usetex'] is False
|
|
|
|
|
|
@pytest.mark.skipif(sys.platform != "linux", reason="Linux only")
|
|
def test_backend_fallback_headless(tmpdir):
|
|
env = {**os.environ,
|
|
"DISPLAY": "", "WAYLAND_DISPLAY": "",
|
|
"MPLBACKEND": "", "MPLCONFIGDIR": str(tmpdir)}
|
|
with pytest.raises(subprocess.CalledProcessError):
|
|
subprocess.run(
|
|
[sys.executable, "-c",
|
|
"import matplotlib;"
|
|
"matplotlib.use('tkagg');"
|
|
"import matplotlib.pyplot;"
|
|
"matplotlib.pyplot.plot(42);"
|
|
],
|
|
env=env, check=True, stderr=subprocess.DEVNULL)
|
|
|
|
|
|
@pytest.mark.skipif(
|
|
sys.platform == "linux" and not _c_internal_utils.display_is_valid(),
|
|
reason="headless")
|
|
def test_backend_fallback_headful(tmpdir):
|
|
pytest.importorskip("tkinter")
|
|
env = {**os.environ, "MPLBACKEND": "", "MPLCONFIGDIR": str(tmpdir)}
|
|
backend = subprocess.check_output(
|
|
[sys.executable, "-c",
|
|
"import matplotlib as mpl; "
|
|
"sentinel = mpl.rcsetup._auto_backend_sentinel; "
|
|
# Check that access on another instance does not resolve the sentinel.
|
|
"assert mpl.RcParams({'backend': sentinel})['backend'] == sentinel; "
|
|
"assert mpl.rcParams._get('backend') == sentinel; "
|
|
"import matplotlib.pyplot; "
|
|
"print(matplotlib.get_backend())"],
|
|
env=env, text=True)
|
|
# The actual backend will depend on what's installed, but at least tkagg is
|
|
# present.
|
|
assert backend.strip().lower() != "agg"
|
|
|
|
|
|
def test_deprecation(monkeypatch):
|
|
monkeypatch.setitem(
|
|
mpl._deprecated_map, "patch.linewidth",
|
|
("0.0", "axes.linewidth", lambda old: 2 * old, lambda new: new / 2))
|
|
with pytest.warns(mpl.MatplotlibDeprecationWarning):
|
|
assert mpl.rcParams["patch.linewidth"] \
|
|
== mpl.rcParams["axes.linewidth"] / 2
|
|
with pytest.warns(mpl.MatplotlibDeprecationWarning):
|
|
mpl.rcParams["patch.linewidth"] = 1
|
|
assert mpl.rcParams["axes.linewidth"] == 2
|
|
|
|
monkeypatch.setitem(
|
|
mpl._deprecated_ignore_map, "patch.edgecolor",
|
|
("0.0", "axes.edgecolor"))
|
|
with pytest.warns(mpl.MatplotlibDeprecationWarning):
|
|
assert mpl.rcParams["patch.edgecolor"] \
|
|
== mpl.rcParams["axes.edgecolor"]
|
|
with pytest.warns(mpl.MatplotlibDeprecationWarning):
|
|
mpl.rcParams["patch.edgecolor"] = "#abcd"
|
|
assert mpl.rcParams["axes.edgecolor"] != "#abcd"
|
|
|
|
monkeypatch.setitem(
|
|
mpl._deprecated_ignore_map, "patch.force_edgecolor",
|
|
("0.0", None))
|
|
with pytest.warns(mpl.MatplotlibDeprecationWarning):
|
|
assert mpl.rcParams["patch.force_edgecolor"] is None
|
|
|
|
monkeypatch.setitem(
|
|
mpl._deprecated_remain_as_none, "svg.hashsalt",
|
|
("0.0",))
|
|
with pytest.warns(mpl.MatplotlibDeprecationWarning):
|
|
mpl.rcParams["svg.hashsalt"] = "foobar"
|
|
assert mpl.rcParams["svg.hashsalt"] == "foobar" # Doesn't warn.
|
|
mpl.rcParams["svg.hashsalt"] = None # Doesn't warn.
|
|
|
|
mpl.rcParams.update(mpl.rcParams.copy()) # Doesn't warn.
|
|
# Note that the warning suppression actually arises from the
|
|
# iteration over the updater rcParams being protected by
|
|
# suppress_matplotlib_deprecation_warning, rather than any explicit check.
|
|
|
|
|
|
@pytest.mark.parametrize("value", [
|
|
"best",
|
|
1,
|
|
"1",
|
|
(0.9, .7),
|
|
(-0.9, .7),
|
|
"(0.9, .7)"
|
|
])
|
|
def test_rcparams_legend_loc(value):
|
|
# rcParams['legend.loc'] should allow any of the following formats.
|
|
# if any of these are not allowed, an exception will be raised
|
|
# test for gh issue #22338
|
|
mpl.rcParams["legend.loc"] = value
|
|
|
|
|
|
@pytest.mark.parametrize("value", [
|
|
"best",
|
|
1,
|
|
(0.9, .7),
|
|
(-0.9, .7),
|
|
])
|
|
def test_rcparams_legend_loc_from_file(tmpdir, value):
|
|
# rcParams['legend.loc'] should be settable from matplotlibrc.
|
|
# if any of these are not allowed, an exception will be raised.
|
|
# test for gh issue #22338
|
|
rc_path = tmpdir.join("matplotlibrc")
|
|
rc_path.write(f"legend.loc: {value}")
|
|
|
|
with mpl.rc_context(fname=rc_path):
|
|
assert mpl.rcParams["legend.loc"] == value
|