76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
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import os
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from pathlib import Path
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import re
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import sys
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import pytest
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import matplotlib.pyplot as plt
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from matplotlib.testing import subprocess_run_for_testing
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from matplotlib.testing._markers import needs_usetex
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from matplotlib.texmanager import TexManager
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def test_fontconfig_preamble():
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"""Test that the preamble is included in the source."""
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plt.rcParams['text.usetex'] = True
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src1 = TexManager()._get_tex_source("", fontsize=12)
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plt.rcParams['text.latex.preamble'] = '\\usepackage{txfonts}'
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src2 = TexManager()._get_tex_source("", fontsize=12)
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assert src1 != src2
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@pytest.mark.parametrize(
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"rc, preamble, family", [
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({"font.family": "sans-serif", "font.sans-serif": "helvetica"},
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r"\usepackage{helvet}", r"\sffamily"),
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({"font.family": "serif", "font.serif": "palatino"},
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r"\usepackage{mathpazo}", r"\rmfamily"),
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({"font.family": "cursive", "font.cursive": "zapf chancery"},
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r"\usepackage{chancery}", r"\rmfamily"),
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({"font.family": "monospace", "font.monospace": "courier"},
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r"\usepackage{courier}", r"\ttfamily"),
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({"font.family": "helvetica"}, r"\usepackage{helvet}", r"\sffamily"),
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({"font.family": "palatino"}, r"\usepackage{mathpazo}", r"\rmfamily"),
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({"font.family": "zapf chancery"},
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r"\usepackage{chancery}", r"\rmfamily"),
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({"font.family": "courier"}, r"\usepackage{courier}", r"\ttfamily")
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])
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def test_font_selection(rc, preamble, family):
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plt.rcParams.update(rc)
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tm = TexManager()
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src = Path(tm.make_tex("hello, world", fontsize=12)).read_text()
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assert preamble in src
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assert [*re.findall(r"\\\w+family", src)] == [family]
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@needs_usetex
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def test_unicode_characters():
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# Smoke test to see that Unicode characters does not cause issues
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# See #23019
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plt.rcParams['text.usetex'] = True
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fig, ax = plt.subplots()
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ax.set_ylabel('\\textit{Velocity (\N{DEGREE SIGN}/sec)}')
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ax.set_xlabel('\N{VULGAR FRACTION ONE QUARTER}Öøæ')
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fig.canvas.draw()
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# But not all characters.
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# Should raise RuntimeError, not UnicodeDecodeError
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with pytest.raises(RuntimeError):
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ax.set_title('\N{SNOWMAN}')
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fig.canvas.draw()
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@needs_usetex
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def test_openin_any_paranoid():
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completed = subprocess_run_for_testing(
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[sys.executable, "-c",
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'import matplotlib.pyplot as plt;'
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'plt.rcParams.update({"text.usetex": True});'
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'plt.title("paranoid");'
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'plt.show(block=False);'],
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env={**os.environ, 'openin_any': 'p'}, check=True, capture_output=True)
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assert completed.stderr == ""
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