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Python

from matplotlib.font_manager import FontProperties
# Attributes on FontProperties object to check for consistency
keys = [
"get_family",
"get_style",
"get_variant",
"get_weight",
"get_size",
]
def test_fontconfig_pattern():
"Test converting a FontProperties to string then back."
# Defaults
test = "defaults "
f1 = FontProperties()
s = str(f1)
f2 = FontProperties(s)
for k in keys:
assert getattr(f1, k)() == getattr(f2, k)(), test + k
# Basic inputs
test = "basic "
f1 = FontProperties(family="serif", size=20, style="italic")
s = str(f1)
f2 = FontProperties(s)
for k in keys:
assert getattr(f1, k)() == getattr(f2, k)(), test + k
# Full set of inputs.
test = "full "
f1 = FontProperties(family="sans-serif", size=24, weight="bold",
style="oblique", variant="small-caps",
stretch="expanded")
s = str(f1)
f2 = FontProperties(s)
for k in keys:
assert getattr(f1, k)() == getattr(f2, k)(), test + k
def test_fontconfig_str():
"Test FontProperties string conversions for correctness"
# Known good strings taken from actual font config specs on a linux box
# and modified for MPL defaults.
# Default values found by inspection.
test = "defaults "
s = ("sans\\-serif:style=normal:variant=normal:weight=normal"
":stretch=normal:size=12.0")
font = FontProperties(s)
right = FontProperties()
for k in keys:
assert getattr(font, k)() == getattr(right, k)(), test + k
test = "full "
s = ("serif:size=24:style=oblique:variant=small-caps:weight=bold"
":stretch=expanded")
font = FontProperties(s)
right = FontProperties(family="serif", size=24, weight="bold",
style="oblique", variant="small-caps",
stretch="expanded")
for k in keys:
assert getattr(font, k)() == getattr(right, k)(), test + k