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- import matplotlib.pyplot as plt
- from matplotlib.texmanager import TexManager
- def test_fontconfig_preamble():
- """
- Test that the preamble is included in _fontconfig
- """
- plt.rcParams['text.usetex'] = True
- tm1 = TexManager()
- font_config1 = tm1.get_font_config()
- plt.rcParams['text.latex.preamble'] = ['\\usepackage{txfonts}']
- tm2 = TexManager()
- font_config2 = tm2.get_font_config()
- assert font_config1 != font_config2
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