536 lines
20 KiB
Python
536 lines
20 KiB
Python
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from collections import OrderedDict
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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 cbook
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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 (validate_bool_maybe_none,
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validate_stringlist,
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validate_colorlist,
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validate_color,
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validate_bool,
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validate_fontweight,
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validate_nseq_int,
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validate_nseq_float,
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validate_cycler,
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validate_hatch,
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validate_hist_bins,
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validate_markevery,
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_validate_linestyle)
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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')
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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 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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pytest.warns(UserWarning, match="validate"):
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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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pytest.warns(UserWarning, match="validate"):
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mpl.RcParams({'figure.figsize': (3.5, 42, 1)})
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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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# This was not possible because validate_bool_maybe_none did not
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# accept None as an argument.
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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 cbook._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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# real test is that this does not raise
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assert validate_bool_maybe_none(None) is None
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assert validate_bool_maybe_none("none") is None
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with pytest.raises(ValueError):
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validate_bool_maybe_none("blah")
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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-32-BE')
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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 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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((1, 2), ['1', '2']),
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(np.array([1, 2]), ['1', '2']),
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),
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'fail': ((dict(), ValueError),
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(1, ValueError),
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)
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},
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{'validator': validate_nseq_int(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': validate_nseq_float(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),
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(1, 2, 3)
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))
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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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('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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('(0, 1, "0.5")', [0.0, 1.0, 0.5]), # unusual but valid
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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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),
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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),
|
||
|
|
((1, 1), (1, 1)),
|
||
|
|
((0.1, 0.1), (0.1, 0.1)),
|
||
|
|
([1, 2, 3], [1, 2, 3]),
|
||
|
|
(slice(2), slice(None, 2, None)),
|
||
|
|
(slice(1, 2, 3), slice(1, 2, 3))
|
||
|
|
),
|
||
|
|
'fail': (((1, 2, 3), TypeError),
|
||
|
|
([1, 2, 0.3], TypeError),
|
||
|
|
(['a', 2, 3], TypeError),
|
||
|
|
([1, 2, 'a'], TypeError),
|
||
|
|
((0.1, 0.2, 0.3), TypeError),
|
||
|
|
((0.1, 2, 3), TypeError),
|
||
|
|
((1, 0.2, 0.3), TypeError),
|
||
|
|
((1, 0.1), TypeError),
|
||
|
|
((0.1, 1), TypeError),
|
||
|
|
(('abc'), TypeError),
|
||
|
|
((1, 'a'), TypeError),
|
||
|
|
((0.1, 'b'), TypeError),
|
||
|
|
(('a', 1), TypeError),
|
||
|
|
(('a', 0.1), TypeError),
|
||
|
|
('abc', TypeError),
|
||
|
|
('a', TypeError),
|
||
|
|
(object(), TypeError)
|
||
|
|
)
|
||
|
|
},
|
||
|
|
{'validator': _validate_linestyle,
|
||
|
|
'success': (('-', '-'), ('solid', 'solid'),
|
||
|
|
('--', '--'), ('dashed', 'dashed'),
|
||
|
|
('-.', '-.'), ('dashdot', 'dashdot'),
|
||
|
|
(':', ':'), ('dotted', 'dotted'),
|
||
|
|
('', ''), (' ', ' '),
|
||
|
|
('None', 'none'), ('none', 'none'),
|
||
|
|
('DoTtEd', 'dotted'), # case-insensitive
|
||
|
|
(['1.23', '4.56'], (None, [1.23, 4.56])),
|
||
|
|
([1.23, 456], (None, [1.23, 456.0])),
|
||
|
|
([1, 2, 3, 4], (None, [1.0, 2.0, 3.0, 4.0])),
|
||
|
|
),
|
||
|
|
'fail': (('aardvark', ValueError), # not a valid string
|
||
|
|
(b'dotted', ValueError),
|
||
|
|
('dotted'.encode('utf-16'), ValueError),
|
||
|
|
((None, [1, 2]), ValueError), # (offset, dashes) != OK
|
||
|
|
((0, [1, 2]), ValueError), # idem
|
||
|
|
((-1, [1, 2]), ValueError), # idem
|
||
|
|
([1, 2, 3], ValueError), # sequence with odd length
|
||
|
|
(1.23, ValueError), # not a sequence
|
||
|
|
)
|
||
|
|
},
|
||
|
|
)
|
||
|
|
|
||
|
|
for validator_dict in validation_tests:
|
||
|
|
validator = validator_dict['validator']
|
||
|
|
if valid:
|
||
|
|
for arg, target in validator_dict['success']:
|
||
|
|
yield validator, arg, target
|
||
|
|
else:
|
||
|
|
for arg, error_type in validator_dict['fail']:
|
||
|
|
yield validator, arg, error_type
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.parametrize('validator, arg, target',
|
||
|
|
generate_validator_testcases(True))
|
||
|
|
def test_validator_valid(validator, arg, target):
|
||
|
|
res = validator(arg)
|
||
|
|
if isinstance(target, np.ndarray):
|
||
|
|
np.testing.assert_equal(res, target)
|
||
|
|
elif not isinstance(target, Cycler):
|
||
|
|
assert res == target
|
||
|
|
else:
|
||
|
|
# Cyclers can't simply be asserted equal. They don't implement __eq__
|
||
|
|
assert list(res) == list(target)
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.parametrize('validator, arg, exception_type',
|
||
|
|
generate_validator_testcases(False))
|
||
|
|
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
|
||
|
|
|
||
|
|
|
||
|
|
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_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=OrderedDict([('text.usetex', True),
|
||
|
|
('test.blah', True)])):
|
||
|
|
pass
|
||
|
|
|
||
|
|
assert mpl.rcParams['text.usetex'] is False
|
||
|
|
|
||
|
|
|
||
|
|
def test_if_rctemplate_is_up_to_date():
|
||
|
|
# This tests if the matplotlibrc.template file contains all valid rcParams.
|
||
|
|
deprecated = {*mpl._all_deprecated, *mpl._deprecated_remain_as_none}
|
||
|
|
with cbook._get_data_path('matplotlibrc').open() as file:
|
||
|
|
rclines = file.readlines()
|
||
|
|
missing = {}
|
||
|
|
for k, v in mpl.defaultParams.items():
|
||
|
|
if k[0] == "_":
|
||
|
|
continue
|
||
|
|
if k in deprecated:
|
||
|
|
continue
|
||
|
|
found = False
|
||
|
|
for line in rclines:
|
||
|
|
if k in line:
|
||
|
|
found = True
|
||
|
|
if not found:
|
||
|
|
missing.update({k: v})
|
||
|
|
if missing:
|
||
|
|
raise ValueError("The following params are missing in the "
|
||
|
|
"matplotlibrc.template file: {}"
|
||
|
|
.format(missing.items()))
|
||
|
|
|
||
|
|
|
||
|
|
def test_if_rctemplate_would_be_valid(tmpdir):
|
||
|
|
# This tests if the matplotlibrc.template file would result in a valid
|
||
|
|
# rc file if all lines are uncommented.
|
||
|
|
with cbook._get_data_path('matplotlibrc').open() as file:
|
||
|
|
rclines = file.readlines()
|
||
|
|
newlines = []
|
||
|
|
for line in rclines:
|
||
|
|
if line[0] == "#":
|
||
|
|
newline = line[1:]
|
||
|
|
else:
|
||
|
|
newline = line
|
||
|
|
if "$TEMPLATE_BACKEND" in newline:
|
||
|
|
newline = "backend : Agg"
|
||
|
|
if "datapath" in newline:
|
||
|
|
newline = ""
|
||
|
|
newlines.append(newline)
|
||
|
|
d = tmpdir.mkdir('test1')
|
||
|
|
fname = str(d.join('testrcvalid.temp'))
|
||
|
|
with open(fname, "w") as f:
|
||
|
|
f.writelines(newlines)
|
||
|
|
with pytest.warns(None) as record:
|
||
|
|
mpl.rc_params_from_file(fname,
|
||
|
|
fail_on_error=True,
|
||
|
|
use_default_template=False)
|
||
|
|
assert len(record) == 0
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.skipif(sys.platform != "linux", reason="Linux only")
|
||
|
|
def test_backend_fallback_headless(tmpdir):
|
||
|
|
env = {**os.environ,
|
||
|
|
"DISPLAY": "", "MPLBACKEND": "", "MPLCONFIGDIR": str(tmpdir)}
|
||
|
|
with pytest.raises(subprocess.CalledProcessError):
|
||
|
|
subprocess.run(
|
||
|
|
[sys.executable, "-c",
|
||
|
|
"import matplotlib; matplotlib.use('tkagg')"],
|
||
|
|
env=env, check=True)
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.skipif(sys.platform == "linux" and not os.environ.get("DISPLAY"),
|
||
|
|
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.pyplot; print(matplotlib.get_backend())"],
|
||
|
|
env=env, universal_newlines=True)
|
||
|
|
# The actual backend will depend on what's installed, but at least tkagg is
|
||
|
|
# present.
|
||
|
|
assert backend.strip().lower() != "agg"
|