def test_latex_to_png_color():
"""
Test color settings for latex_to_png.
"""
latex_string = "$x^2$"
default_value = latextools.latex_to_png(latex_string, wrap=False)
default_hexblack = latextools.latex_to_png(latex_string, wrap=False,
color='#000000')
dvipng_default = latextools.latex_to_png_dvipng(latex_string, False)
dvipng_black = latextools.latex_to_png_dvipng(latex_string, False, 'Black')
assert dvipng_default == dvipng_black
mpl_default = latextools.latex_to_png_mpl(latex_string, False)
mpl_black = latextools.latex_to_png_mpl(latex_string, False, 'Black')
assert mpl_default == mpl_black
assert default_value in [dvipng_black, mpl_black]
assert default_hexblack in [dvipng_black, mpl_black]
# Test that dvips name colors can be used without error
dvipng_maroon = latextools.latex_to_png_dvipng(latex_string, False,
'Maroon')
# And that it doesn't return the black one
assert dvipng_black != dvipng_maroon
mpl_maroon = latextools.latex_to_png_mpl(latex_string, False, 'Maroon')
assert mpl_black != mpl_maroon
mpl_white = latextools.latex_to_png_mpl(latex_string, False, 'White')
mpl_hexwhite = latextools.latex_to_png_mpl(latex_string, False, '#FFFFFF')
assert mpl_white == mpl_hexwhite
mpl_white_scale = latextools.latex_to_png_mpl(latex_string, False,
'White', 1.2)
assert mpl_white != mpl_white_scale
def test_latex_to_png_color():
"""
Test color settings for latex_to_png.
"""
latex_string = "$x^2$"
default_value = latextools.latex_to_png(latex_string, wrap=False)
default_hexblack = latextools.latex_to_png(latex_string,
wrap=False,
color="#000000")
dvipng_default = latextools.latex_to_png_dvipng(latex_string, False)
dvipng_black = latextools.latex_to_png_dvipng(latex_string, False, "Black")
nt.assert_equal(dvipng_default, dvipng_black)
mpl_default = latextools.latex_to_png_mpl(latex_string, False)
mpl_black = latextools.latex_to_png_mpl(latex_string, False, "Black")
nt.assert_equal(mpl_default, mpl_black)
nt.assert_in(default_value, [dvipng_black, mpl_black])
nt.assert_in(default_hexblack, [dvipng_black, mpl_black])
# Test that dvips name colors can be used without error
dvipng_maroon = latextools.latex_to_png_dvipng(latex_string, False,
"Maroon")
# And that it doesn't return the black one
nt.assert_not_equal(dvipng_black, dvipng_maroon)
mpl_maroon = latextools.latex_to_png_mpl(latex_string, False, "Maroon")
nt.assert_not_equal(mpl_black, mpl_maroon)
mpl_white = latextools.latex_to_png_mpl(latex_string, False, "White")
mpl_hexwhite = latextools.latex_to_png_mpl(latex_string, False, "#FFFFFF")
nt.assert_equal(mpl_white, mpl_hexwhite)
mpl_white_scale = latextools.latex_to_png_mpl(latex_string, False, "White",
1.2)
nt.assert_not_equal(mpl_white, mpl_white_scale)
def test_latex_to_png_dvipng_runs(s, wrap):
"""
Test that latex_to_png_dvipng just runs without error.
"""
def mock_kpsewhich(filename):
assert filename == "breqn.sty"
return None
latextools.latex_to_png_dvipng(s, wrap)
with patch_latextool(mock_kpsewhich):
latextools.latex_to_png_dvipng(s, wrap)
def test_check_latex_to_png_dvipng_fails_when_no_cmd(command):
def mock_find_cmd(arg):
if arg == command:
raise FindCmdError
with patch.object(latextools, "find_cmd", mock_find_cmd):
assert latextools.latex_to_png_dvipng("whatever", True) is None
def check_latex_to_png_dvipng_fails_when_no_cmd(command):
def mock_find_cmd(arg):
if arg == command:
raise FindCmdError
with monkeypatch(latextools, "find_cmd", mock_find_cmd):
nt.assert_equals(latextools.latex_to_png_dvipng("whatever", True),
None)
def check_latex_to_png_dvipng_fails_when_no_cmd(command):
def mock_find_cmd(arg):
if arg == command:
raise FindCmdError
with monkeypatch(latextools, "find_cmd", mock_find_cmd):
nt.assert_equals(latextools.latex_to_png_dvipng("whatever", True),
None)
