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import math
import shutil
from pathlib import Path
import pytest
from fontTools.designspaceLib import DesignSpaceDocument
from fontTools.designspaceLib.split import (
_conditionSetFrom,
convert5to4,
splitInterpolable,
splitVariableFonts,
)
from fontTools.designspaceLib.types import ConditionSet, Range
from .fixtures import datadir
UPDATE_REFERENCE_OUT_FILES_INSTEAD_OF_TESTING = False
@pytest.mark.parametrize(
"test_ds,expected_interpolable_spaces",
[
(
"test_v5_aktiv.designspace",
[
(
{},
{
"AktivGroteskVF_Italics_Wght",
"AktivGroteskVF_Italics_WghtWdth",
"AktivGroteskVF_Wght",
"AktivGroteskVF_WghtWdth",
"AktivGroteskVF_WghtWdthItal",
},
)
],
),
(
"test_v5_sourceserif.designspace",
[
(
{"italic": 0},
{"SourceSerif4Variable-Roman"},
),
(
{"italic": 1},
{"SourceSerif4Variable-Italic"},
),
],
),
(
"test_v5_MutatorSans_and_Serif.designspace",
[
(
{"serif": 0},
{
"MutatorSansVariable_Weight_Width",
"MutatorSansVariable_Weight",
"MutatorSansVariable_Width",
},
),
(
{"serif": 1},
{
"MutatorSerifVariable_Width",
},
),
],
),
],
)
def test_split(datadir, tmpdir, test_ds, expected_interpolable_spaces):
data_in = datadir / test_ds
temp_in = Path(tmpdir) / test_ds
shutil.copy(data_in, temp_in)
doc = DesignSpaceDocument.fromfile(temp_in)
for i, (location, sub_doc) in enumerate(splitInterpolable(doc)):
expected_location, expected_vf_names = expected_interpolable_spaces[i]
assert location == expected_location
vfs = list(splitVariableFonts(sub_doc))
assert expected_vf_names == set(vf[0] for vf in vfs)
loc_str = "_".join(
f"{name}_{value}" for name, value in sorted(location.items())
)
data_out = datadir / "split_output" / f"{temp_in.stem}_{loc_str}.designspace"
temp_out = Path(tmpdir) / "out" / f"{temp_in.stem}_{loc_str}.designspace"
temp_out.parent.mkdir(exist_ok=True)
sub_doc.write(temp_out)
if UPDATE_REFERENCE_OUT_FILES_INSTEAD_OF_TESTING:
data_out.write_text(temp_out.read_text(encoding="utf-8"), encoding="utf-8")
else:
assert data_out.read_text(encoding="utf-8") == temp_out.read_text(
encoding="utf-8"
)
for vf_name, vf_doc in vfs:
data_out = (datadir / "split_output" / vf_name).with_suffix(".designspace")
temp_out = (Path(tmpdir) / "out" / vf_name).with_suffix(".designspace")
temp_out.parent.mkdir(exist_ok=True)
vf_doc.write(temp_out)
if UPDATE_REFERENCE_OUT_FILES_INSTEAD_OF_TESTING:
data_out.write_text(
temp_out.read_text(encoding="utf-8"), encoding="utf-8"
)
else:
assert data_out.read_text(encoding="utf-8") == temp_out.read_text(
encoding="utf-8"
)
@pytest.mark.parametrize(
"test_ds,expected_vfs",
[
(
"test_v5_aktiv.designspace",
{
"AktivGroteskVF_Italics_Wght",
"AktivGroteskVF_Italics_WghtWdth",
"AktivGroteskVF_Wght",
"AktivGroteskVF_WghtWdth",
"AktivGroteskVF_WghtWdthItal",
},
),
(
"test_v5_sourceserif.designspace",
{
"SourceSerif4Variable-Italic",
"SourceSerif4Variable-Roman",
},
),
],
)
def test_convert5to4(datadir, tmpdir, test_ds, expected_vfs):
data_in = datadir / test_ds
temp_in = tmpdir / test_ds
shutil.copy(data_in, temp_in)
doc = DesignSpaceDocument.fromfile(temp_in)
variable_fonts = convert5to4(doc)
assert variable_fonts.keys() == expected_vfs
for vf_name, vf in variable_fonts.items():
data_out = (datadir / "convert5to4_output" / vf_name).with_suffix(
".designspace"
)
temp_out = (Path(tmpdir) / "out" / vf_name).with_suffix(".designspace")
temp_out.parent.mkdir(exist_ok=True)
vf.write(temp_out)
if UPDATE_REFERENCE_OUT_FILES_INSTEAD_OF_TESTING:
data_out.write_text(temp_out.read_text(encoding="utf-8"), encoding="utf-8")
else:
assert data_out.read_text(encoding="utf-8") == temp_out.read_text(
encoding="utf-8"
)
@pytest.mark.parametrize(
["unbounded_condition"],
[
({"name": "Weight", "minimum": 500},),
({"name": "Weight", "maximum": 500},),
({"name": "Weight", "minimum": 500, "maximum": None},),
({"name": "Weight", "minimum": None, "maximum": 500},),
],
)
def test_optional_min_max(unbounded_condition):
"""Check that split functions can handle conditions that are partially
unbounded without tripping over None values and missing keys."""
doc = DesignSpaceDocument()
doc.addAxisDescriptor(
name="Weight", tag="wght", minimum=400, maximum=1000, default=400
)
doc.addRuleDescriptor(
name="unbounded",
conditionSets=[[unbounded_condition]],
)
assert len(list(splitInterpolable(doc))) == 1
assert len(list(splitVariableFonts(doc))) == 1
@pytest.mark.parametrize(
["condition", "expected_set"],
[
(
{"name": "axis", "minimum": 0.5},
{"axis": Range(minimum=0.5, maximum=math.inf)},
),
(
{"name": "axis", "maximum": 0.5},
{"axis": Range(minimum=-math.inf, maximum=0.5)},
),
(
{"name": "axis", "minimum": 0.5, "maximum": None},
{"axis": Range(minimum=0.5, maximum=math.inf)},
),
(
{"name": "axis", "minimum": None, "maximum": 0.5},
{"axis": Range(minimum=-math.inf, maximum=0.5)},
),
],
)
def test_optional_min_max_internal(condition, expected_set: ConditionSet):
"""Check that split's internal helper functions produce the correct output
for conditions that are partially unbounded."""
assert _conditionSetFrom([condition]) == expected_set
def test_avar2(datadir):
ds = DesignSpaceDocument()
ds.read(datadir / "test_avar2.designspace")
_, subDoc = next(splitInterpolable(ds))
assert len(subDoc.axisMappings) == 1
subDocs = list(splitVariableFonts(ds))
assert len(subDocs) == 5
for i, (_, subDoc) in enumerate(subDocs):
# Only the first one should have a mapping, according to the document
if i == 0:
assert len(subDoc.axisMappings) == 1
else:
assert len(subDoc.axisMappings) == 0
|
