Commit4736de1

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Simon May

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Add image test for#26892

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lib/matplotlib/tests
- baseline_images/test_backend_pgf
  - pgf_document_font_size.pdf
- test_backend_pgf.py

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Original file line number	Diff line number	Diff line change
`@@ -402,3 +402,27 @@ def test_sketch_params():`
`402`	`402`	`# \pgfdecoratecurrentpath must be after the path definition and before the`
`403`	`403`	`# path is used (\pgfusepath)`
`404`	`404`	`assertbaselineinbuf`
	`405`	`+`
	`406`	`+`
	`407`	`+# test to make sure that the document font size is set consistently (see #26892)`
	`408`	`+@needs_pgf_xelatex`
	`409`	`+@pytest.mark.skipif(`
	`410`	`+not_has_tex_package('unicode-math'),reason='needs unicode-math.sty'`
	`411`	`+)`
	`412`	`+@pytest.mark.backend('pgf')`
	`413`	`+@image_comparison(['pgf_document_font_size.pdf'],style='default',remove_text=True)`
	`414`	`+deftest_document_font_size():`
	`415`	`+mpl.rcParams.update({`
	`416`	`+'pgf.texsystem':'xelatex',`
	`417`	`+'pgf.rcfonts':False,`
	`418`	`+'pgf.preamble':r'\usepackage{unicode-math}',`
	`419`	`+ })`
	`420`	`+plt.figure()`
	`421`	`+plt.plot([],`
	`422`	`+label=r'$this is a very very very long math label a \times b + 10^{-3}$ '`
	`423`	`+r'and some text'`
	`424`	`+ )`
	`425`	`+plt.plot([],`
	`426`	`+label=r'\normalsize the document font size is \the\fontdimen6\font'`
	`427`	`+ )`
	`428`	`+plt.legend()`

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