import logging

import fontTools.designspaceLib as designspaceLib
import pytest
from fontTools.pens.recordingPen import RecordingPen

import ufo2ft.instantiator
from ufo2ft.util import openFont, openFontFactory


def test_interpolation_weight_width_class(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    for instance in designspace.instances:
        instance.font = generator.generate_instance(instance)

    # LightCondensed
    font = designspace.instances[0].font
    assert font.info.openTypeOS2WeightClass == 1
    assert font.info.openTypeOS2WidthClass == 1

    # BoldCondensed
    font = designspace.instances[1].font
    assert font.info.openTypeOS2WeightClass == 1000
    assert font.info.openTypeOS2WidthClass == 1

    # LightWide
    font = designspace.instances[2].font
    assert font.info.openTypeOS2WeightClass == 1
    assert font.info.openTypeOS2WidthClass == 9

    # BoldWide
    font = designspace.instances[3].font
    assert font.info.openTypeOS2WeightClass == 1000
    assert font.info.openTypeOS2WidthClass == 9

    # Medium_Narrow_I
    font = designspace.instances[4].font
    assert font.info.openTypeOS2WeightClass == 500
    assert font.info.openTypeOS2WidthClass == 9

    # Medium_Wide_I
    font = designspace.instances[5].font
    assert font.info.openTypeOS2WeightClass == 500
    assert font.info.openTypeOS2WidthClass == 9

    # Two
    font = designspace.instances[6].font
    assert font.info.openTypeOS2WeightClass == 1000
    assert font.info.openTypeOS2WidthClass == 9

    # One
    font = designspace.instances[7].font
    assert font.info.openTypeOS2WeightClass == 500
    assert font.info.openTypeOS2WidthClass == 9


def test_default_groups_only(ufo_module, data_dir, caplog):
    """Test that only the default source's groups end up in instances."""

    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=300, maximum=900
    )
    d.addSourceDescriptor(location={"Weight": 300}, font=ufo_module.Font())
    d.addSourceDescriptor(location={"Weight": 900}, font=ufo_module.Font())
    d.addInstanceDescriptor(styleName="2", location={"Weight": 400})

    d.sources[0].font.groups["public.kern1.GRK_alpha_alt_LC_1ST"] = [
        "alpha.alt",
        "alphatonos.alt",
    ]
    d.sources[1].font.groups["public.kern1.GRK_alpha_LC_1ST"] = [
        "alpha.alt",
        "alphatonos.alt",
    ]

    generator = ufo2ft.instantiator.Instantiator.from_designspace(d)
    assert "contains different groups than the default source" in caplog.text

    instance = generator.generate_instance(d.instances[0])
    assert instance.groups == {
        "public.kern1.GRK_alpha_alt_LC_1ST": ["alpha.alt", "alphatonos.alt"]
    }


def test_default_groups_only2(ufo_module, data_dir, caplog):
    """Test that the group difference warning is not triggered if non-default
    source groups are empty."""

    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=300, maximum=900
    )
    d.addSourceDescriptor(location={"Weight": 300}, font=ufo_module.Font())
    d.addSourceDescriptor(location={"Weight": 900}, font=ufo_module.Font())
    d.addInstanceDescriptor(styleName="2", location={"Weight": 400})

    d.sources[0].font.groups["public.kern1.GRK_alpha_alt_LC_1ST"] = [
        "alpha.alt",
        "alphatonos.alt",
    ]

    generator = ufo2ft.instantiator.Instantiator.from_designspace(d)
    assert "contains different groups than the default source" not in caplog.text

    instance = generator.generate_instance(d.instances[0])
    assert instance.groups == {
        "public.kern1.GRK_alpha_alt_LC_1ST": ["alpha.alt", "alphatonos.alt"]
    }


def test_interpolation_no_rounding(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    designspace.instances[4].location = {"weight": 123.456, "width": 789.123}
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=False
    )

    instance_font = generator.generate_instance(designspace.instances[4])
    assert isinstance(instance_font.info.ascender, float)
    assert isinstance(instance_font.kerning[("A", "J")], float)
    assert isinstance(instance_font["A"].contours[0][0].x, float)


def test_interpolation_rounding(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    designspace.instances[4].location = {"weight": 123.456, "width": 789.123}
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[4])
    assert isinstance(instance_font.info.ascender, int)
    assert isinstance(instance_font.kerning[("A", "J")], int)
    assert isinstance(instance_font["A"].contours[0][0].x, int)


def test_weight_class_from_wght_axis():
    assert ufo2ft.instantiator.weight_class_from_wght_value(-500) == 1
    assert ufo2ft.instantiator.weight_class_from_wght_value(1.1) == 1
    assert ufo2ft.instantiator.weight_class_from_wght_value(1) == 1
    assert ufo2ft.instantiator.weight_class_from_wght_value(500.6) == 501
    assert ufo2ft.instantiator.weight_class_from_wght_value(1000) == 1000
    assert ufo2ft.instantiator.weight_class_from_wght_value(1000.0) == 1000
    assert ufo2ft.instantiator.weight_class_from_wght_value(1000.1) == 1000
    assert ufo2ft.instantiator.weight_class_from_wght_value(2000.1) == 1000


def test_width_class_from_wdth_axis():
    assert ufo2ft.instantiator.width_class_from_wdth_value(-500) == 1
    assert ufo2ft.instantiator.width_class_from_wdth_value(50) == 1
    assert ufo2ft.instantiator.width_class_from_wdth_value(62.5) == 2
    assert ufo2ft.instantiator.width_class_from_wdth_value(75) == 3
    assert ufo2ft.instantiator.width_class_from_wdth_value(87.5) == 4
    assert ufo2ft.instantiator.width_class_from_wdth_value(100) == 5
    assert ufo2ft.instantiator.width_class_from_wdth_value(112) == 6
    assert ufo2ft.instantiator.width_class_from_wdth_value(112.5) == 6
    assert ufo2ft.instantiator.width_class_from_wdth_value(125) == 7
    assert ufo2ft.instantiator.width_class_from_wdth_value(130) == 7
    assert ufo2ft.instantiator.width_class_from_wdth_value(150) == 8
    assert ufo2ft.instantiator.width_class_from_wdth_value(190) == 9
    assert ufo2ft.instantiator.width_class_from_wdth_value(200) == 9
    assert ufo2ft.instantiator.width_class_from_wdth_value(1000) == 9


def test_swap_glyph_names(ufo_module, data_dir):
    ufo = openFont(data_dir / "SwapGlyphNames" / "A.ufo", ufo_module=ufo_module)

    ufo2ft.instantiator.swap_glyph_names(ufo, "a", "a.swap")

    # Test swapped outlines.
    assert ufo["a"].unicode == 0x61
    assert len(ufo["a"]) == 1
    assert len(ufo["a"][0]) == 8
    assert ufo["a"].width == 666
    assert ufo["a.swap"].unicode is None
    assert len(ufo["a.swap"]) == 1
    assert len(ufo["a.swap"][0]) == 4
    assert ufo["a.swap"].width == 600

    # Test swapped components.
    assert sorted(c.baseGlyph for c in ufo["aaa"].components) == [
        "a.swap",
        "a.swap",
        "x",
    ]
    assert sorted(c.baseGlyph for c in ufo["aaa.swap"].components) == ["a", "a", "y"]

    # Test swapped anchors.
    assert [dict(a) for a in ufo["a"].anchors] == [
        dict(x=153, y=0, name="bottom"),
        dict(x=153, y=316, name="top"),
    ]
    assert [dict(a) for a in ufo["a.swap"].anchors] == [
        dict(x=351, y=0, name="bottom"),
        dict(x=351, y=613, name="top"),
    ]

    # Test swapped glyph kerning.
    assert ufo.kerning == {
        ("public.kern1.a", "x"): 10,
        ("public.kern1.aswap", "x"): 20,
        ("a", "y"): 40,
        ("a.swap", "y"): 30,
        ("y", "a"): 60,
        ("y", "a.swap"): 50,
    }

    # Test swapped group membership.
    assert ufo.groups == {
        "public.kern1.a": ["a.swap"],
        "public.kern1.aswap": ["a"],
        "public.kern2.a": ["a.swap", "a"],
    }

    # Swap a second time.
    ufo2ft.instantiator.swap_glyph_names(ufo, "aaa", "aaa.swap")

    # Test swapped glyphs.
    assert sorted(c.baseGlyph for c in ufo["aaa"].components) == ["a", "a", "y"]
    assert sorted(c.baseGlyph for c in ufo["aaa.swap"].components) == [
        "a.swap",
        "a.swap",
        "x",
    ]

    # Test for no leftover temporary glyphs.
    assert {g.name for g in ufo} == {
        "space",
        "a",
        "a.swap",
        "aaa",
        "aaa.swap",
        "x",
        "y",
    }

    with pytest.raises(ufo2ft.instantiator.InstantiatorError, match="Cannot swap"):
        ufo2ft.instantiator.swap_glyph_names(ufo, "aaa", "aaa.swapa")


def test_swap_glyph_names_spec(ufo_module, data_dir):
    """Test that the rule example in the designspaceLib spec works.

    `adieresis` should look the same as before the rule application.

    [1]: fonttools/Doc/source/designspaceLib#ufo-instances
    """
    ufo = openFont(data_dir / "SwapGlyphNames" / "B.ufo", ufo_module=ufo_module)
    ufo2ft.instantiator.swap_glyph_names(ufo, "a", "a.alt")

    assert sorted(c.baseGlyph for c in ufo["adieresis"].components) == [
        "a.alt",
        "dieresiscomb",
    ]
    assert sorted(c.baseGlyph for c in ufo["adieresis.alt"].components) == [
        "a",
        "dieresiscomb",
    ]


def test_rules_are_applied_deterministically(ufo_module, data_dir):
    """Test that a combination of designspace rules that end up mapping
    serveral input glyphs to the same destination glyph result in a correct and
    deterministic series of glyph swaps.

    The example is a font with 2 Q designs that depend on a style axis
        style < 0.5: Q        style >= 0.5: Q.ss01
    and each Q also has an alternative shape in bolder weights (like Skia)
        weight < 780: Q       weight >= 780: Q.alt
        weight < 730: Q.ss01  weight >= 730: Q.ss01.alt

    Then we generate an instance at style = 1, weight = 900. From the rules,
    the default CMAP entry for Q should have the outlines of Q.ss01.alt from
    the black UFO.
    """
    doc = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceRuleOrder" / "MyFont.designspace"
    )
    doc.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(doc)
    instance = generator.generate_instance(doc.instances[0])
    pen = RecordingPen()
    instance["Q"].draw(pen)
    instance_recording = pen.value

    black_ufo = openFont(
        data_dir / "DesignspaceRuleOrder" / "MyFont_Black.ufo", ufo_module=ufo_module
    )
    pen = RecordingPen()
    black_ufo["Q.ss01.alt"].draw(pen)
    black_ufo_recording = pen.value

    assert instance_recording == black_ufo_recording


def test_raise_no_default_master(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans_no_default.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))

    with pytest.raises(ufo2ft.instantiator.InstantiatorError, match="no default"):
        ufo2ft.instantiator.Instantiator.from_designspace(
            designspace, round_geometry=True
        )


def test_raise_failed_glyph_interpolation(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceBrokenTest" / "DesignspaceTest.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(designspace)

    with pytest.raises(
        ufo2ft.instantiator.InstantiatorError, match="Failed to generate instance"
    ):
        for instance in designspace.instances:
            instance.font = generator.generate_instance(instance)


def test_ignore_failed_glyph_interpolation(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceBrokenTest" / "DesignspaceTest.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(designspace)
    generator.skip_export_glyphs.append("asas")

    for instance in designspace.instances:
        instance.font = generator.generate_instance(instance)
        assert (
            not instance.font["asas"].contours and not instance.font["asas"].components
        )


def test_raise_anisotropic_location(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans-width-only.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    designspace.instances[0].location["width"] = (100, 900)

    with pytest.raises(
        ufo2ft.instantiator.InstantiatorError, match="anisotropic instance locations"
    ):
        ufo2ft.instantiator.Instantiator.from_designspace(
            designspace, round_geometry=True
        )


def test_copy_nonkerning_group(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(designspace)

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.groups == {
        "nonkerning_group": ["A"],
        "public.kern2.asdf": ["A"],
    }


def test_interpolation(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font["l"].width == 220


def test_interpolation_only_default(ufo_module, data_dir, caplog):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    for name in designspace.default.font.glyphOrder:
        if name != "A":
            del designspace.default.font[name]

    with caplog.at_level(logging.WARNING):
        generator = ufo2ft.instantiator.Instantiator.from_designspace(
            designspace, round_geometry=True
        )
    assert "contains glyphs that are missing from the" in caplog.text

    instance_font = generator.generate_instance(designspace.instances[0])
    assert {g.name for g in instance_font} == {"A"}


def test_interpolation_masters_as_instances(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir
        / "DesignspaceBrokenTest"
        / "Designspace-MastersAsInstances.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.info.styleName == "Light ASDF"
    assert instance_font["l"].width == 160
    instance_font = generator.generate_instance(designspace.instances[1])
    assert instance_font.info.styleName == "Bold ASDF"
    assert instance_font["l"].width == 280


def test_non_default_layer(ufo_module, data_dir, caplog):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans-non-default-layer.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )
    instance_font = generator.generate_instance(designspace.instances[0])
    assert {g.name for g in instance_font} == {"A", "S", "W"}


def test_instance_attributes(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-instance-attrs.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.info.familyName == "aaa"
    assert instance_font.info.styleName == "sss"
    assert instance_font.info.postscriptFontName == "ppp"
    assert instance_font.info.styleMapFamilyName == "yyy"
    assert instance_font.info.styleMapStyleName == "xxx"


def test_instance_no_attributes(ufo_module, data_dir, caplog):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-bare.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    with caplog.at_level(logging.WARNING):
        instance_font = generator.generate_instance(designspace.instances[0])
    assert "missing the stylename attribute" in caplog.text

    assert instance_font.info.familyName == "MyFont"
    assert instance_font.info.styleName == "Light"
    assert instance_font.info.postscriptFontName is None
    assert instance_font.info.styleMapFamilyName is None
    assert instance_font.info.styleMapStyleName is None


def test_instance_lib_attributes(ufo_module, data_dir, caplog):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSans" / "MutatorSans.designspace"
    )
    designspace.instances[0].lib["public.fontInfo"] = {
        "openTypeOS2Panose": [
            2,
            11,
            5,
            4,
            2,
            2,
            2,
            2,
            2,
            4,
        ],
        "invalidFontInfoAttribute": "foobarbaz",
    }
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    with caplog.at_level(logging.WARNING):
        instance_font = generator.generate_instance(designspace.instances[0])

    assert instance_font.info.openTypeOS2Panose == [2, 11, 5, 4, 2, 2, 2, 2, 2, 4]
    assert (
        "Font 'MutatorMathTest' at instance location {'width': 0.0, 'weight': 0.0} "
        "has an unknown font info attribute 'invalidFontInfoAttribute' "
        "with value foobarbaz. This will be ignored."
    ) in caplog.text

    instance_font2 = generator.generate_instance(designspace.instances[1])
    assert instance_font2.info.openTypeOS2Panose is None


def test_axis_mapping(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-wght-wdth.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.info.openTypeOS2WeightClass == 400
    assert instance_font.info.openTypeOS2WidthClass == 5
    assert instance_font.info.italicAngle is None
    assert instance_font.lib["designspace.location"] == [
        ("weight", 100.0),
        ("width", 100.0),
    ]


def test_axis_mapping_manual_os2_classes(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-wght-wdth.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    designspace.sources[0].font.info.openTypeOS2WeightClass = 800
    designspace.sources[0].font.info.openTypeOS2WidthClass = 7
    designspace.sources[1].font.info.openTypeOS2WeightClass = 900
    designspace.sources[1].font.info.openTypeOS2WidthClass = 9
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.info.openTypeOS2WeightClass == 850
    assert instance_font.info.openTypeOS2WidthClass == 8
    assert instance_font.info.italicAngle is None
    assert instance_font.lib["designspace.location"] == [
        ("weight", 100.0),
        ("width", 100.0),
    ]


def test_axis_mapping_no_os2_width_class_inference(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-bare.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    designspace.sources[0].font.info.openTypeOS2WeightClass = 800
    designspace.sources[1].font.info.openTypeOS2WeightClass = 900
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.info.openTypeOS2WeightClass == 850
    assert instance_font.info.openTypeOS2WidthClass is None
    assert instance_font.info.italicAngle is None
    assert instance_font.lib["designspace.location"] == [("weight", 100.0)]


def test_axis_mapping_no_os2_class_inference(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-opsz.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.info.openTypeOS2WeightClass is None
    assert instance_font.info.openTypeOS2WidthClass is None
    assert instance_font.info.italicAngle is None
    assert instance_font.lib["designspace.location"] == [("optical", 15.0)]


def test_axis_mapping_italicAngle_inference(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-slnt.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.info.openTypeOS2WeightClass is None
    assert instance_font.info.openTypeOS2WidthClass is None
    assert instance_font.info.italicAngle == 40.123
    assert instance_font.lib["designspace.location"] == [("slant", 40.123)]


def test_lib_into_instance(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-lib.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    assert designspace.default.font.lib["blorb"] == "asasa"
    assert "public.skipExportGlyphs" not in designspace.sources[0].font.lib

    instance_font = generator.generate_instance(designspace.instances[0])
    assert instance_font.lib["blorb"] == "asasa"
    assert instance_font.lib["public.skipExportGlyphs"] == ["a", "b", "c"]

    instance_font2 = generator.generate_instance(designspace.instances[1])
    assert instance_font2.lib["blorb"] == "asasa"
    assert instance_font2.lib["public.skipExportGlyphs"] == ["a", "b", "c"]


def test_font_info_fallback_in_instance(ufo_module, data_dir):
    """Test that font info attributes are correctly copied according to the designspace
    docs fallback rules [1]. Notes: language "de" is 0x0407/1031.

    [1]:https://fonttools.readthedocs.io/en/stable/designspaceLib/index.html#common-lib-key-registry
    """
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-name.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )

    def assert_name_record_in_list(name_record, name_record_list):
        matched_name_records = [
            x
            for x in name_record_list
            if x["platformID"] == name_record["platformID"]
            and x["encodingID"] == name_record["encodingID"]
            and x["languageID"] == name_record["languageID"]
            and x["nameID"] == name_record["nameID"]
        ]
        # only one name record should match with given platformID,
        # encodingID, languageID, nameID
        assert len(matched_name_records) == 1
        # and the string value should match
        assert matched_name_records[0]["string"] == name_record["string"]

    # font info from the default source
    assert designspace.default.font.info.familyName == "MyFont"
    assert designspace.default.font.info.styleName == "Light"
    assert designspace.default.font.info.xHeight == 0
    assert designspace.default.font.info.openTypeNameRecords is None
    assert designspace.default.font.info.openTypeNameSampleText is None
    assert designspace.default.font.info.postscriptFontName == "MyFont-Light"
    # font info from the designspace root lib
    assert designspace.lib["public.fontInfo"]["familyName"] == "MyFont VF"
    assert designspace.lib["public.fontInfo"]["styleName"] == "Regular"
    assert designspace.lib["public.fontInfo"]["versionMajor"] == 1
    assert designspace.lib["public.fontInfo"]["versionMinor"] == 0
    assert designspace.lib["public.fontInfo"]["xHeight"] == 50
    assert "openTypeNameSampleText" not in designspace.lib["public.fontInfo"]
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 0,
            "string": "Urheberrecht 2025",
        },
        designspace.lib["public.fontInfo"]["openTypeNameRecords"],
    )

    # instance 0 has no instance font info, should use root lib attributes
    assert designspace.instances[0].lib == {}
    assert designspace.instances[0].familyName is None
    assert designspace.instances[0].styleName is None
    instance_light_font = generator.generate_instance(designspace.instances[0])
    assert instance_light_font.info.familyName == "MyFont VF"
    assert instance_light_font.info.styleName == "Regular"
    assert instance_light_font.info.versionMajor == 1
    assert instance_light_font.info.versionMinor == 0
    assert instance_light_font.info.xHeight == 50
    assert instance_light_font.info.openTypeNameSampleText is None
    # although the default source defines a 'postscriptFontName', this is considered
    # instance-specific and does not be copied (unless when there's only one source
    # and can unambiguously be copied to all instances, as they'll all be at the
    # default location, see `test_static_font_default_instance_inherits_all_fontinfo`
    assert instance_light_font.info.postscriptFontName is None
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 0,
            "string": "Urheberrecht 2025",
        },
        instance_light_font.info.openTypeNameRecords,
    )

    # instance 4 add new fontinfo attributes
    assert (
        designspace.instances[4].lib["public.fontInfo"]["openTypeNameSampleText"]
        == "Sample text for Bold instance"
    )
    assert designspace.instances[4].familyName == "MyFont"
    assert designspace.instances[4].styleName == "Bold"
    assert designspace.instances[4].localisedFamilyName == {"de": "MehrNamenTest"}
    assert designspace.instances[4].localisedStyleName == {}
    assert designspace.instances[4].localisedStyleMapFamilyName == {}
    assert designspace.instances[4].localisedStyleMapStyleName == {}
    assert {
        "platformID": 3,
        "encodingID": 1,
        "languageID": 1031,
        "nameID": 19,
        "string": "Beispieltext für die Fettschrift",
    } in designspace.instances[4].lib["public.fontInfo"]["openTypeNameRecords"]
    instance_bold_font = generator.generate_instance(designspace.instances[4])
    assert instance_bold_font.info.familyName == "MyFont"
    assert instance_bold_font.info.styleName == "Bold"
    assert (
        instance_bold_font.info.openTypeNameSampleText
        == "Sample text for Bold instance"
    )
    # check if lib-public.fontInfo-openTypeNameRecords is merged correctly
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 0,
            "string": "Urheberrecht 2025",
        },
        instance_bold_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 1,
            "string": "MehrNamenTest",
        },
        instance_bold_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 16,
            "string": "MehrNamenTest",
        },
        instance_bold_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 19,
            "string": "Beispieltext für die Fettschrift",
        },
        instance_bold_font.info.openTypeNameRecords,
    )

    # instance 1 has font info and multilingual familyName attributes,
    # but stylemapfamilyname not in, should autogenerate from familyName
    assert designspace.instances[1].familyName == "MyFont"
    assert designspace.instances[1].styleName == "SemiLight"
    assert designspace.instances[1].localisedFamilyName == {"de": "MehrNamenTest"}
    assert designspace.instances[1].localisedStyleName == {"de": "HalbLeicht"}
    assert designspace.instances[1].localisedStyleMapFamilyName == {}
    assert designspace.instances[1].localisedStyleMapStyleName == {}
    instance_semilight_font = generator.generate_instance(designspace.instances[1])
    assert instance_semilight_font.info.familyName == "MyFont"
    assert instance_semilight_font.info.styleName == "SemiLight"
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 0x0407,
            "nameID": 16,
            "string": "MehrNamenTest",
        },
        instance_semilight_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 0x0407,
            "nameID": 17,
            "string": "HalbLeicht",
        },
        instance_semilight_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 0x0407,
            "nameID": 1,
            "string": "MehrNamenTest HalbLeicht",
        },
        instance_semilight_font.info.openTypeNameRecords,
    )
    # check if lib-public.fontInfo-openTypeNameRecords is merged correctly
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 0,
            "string": "Urheberrecht 2025",
        },
        instance_semilight_font.info.openTypeNameRecords,
    )

    # instance 2 has font info and all multilingual familyName attributes
    assert designspace.instances[2].localisedFamilyName == {"de": "MehrNamenTest"}
    assert designspace.instances[2].localisedStyleName == {"de": "DemiLeicht"}
    assert designspace.instances[2].localisedStyleMapFamilyName == {
        "de": "MehrNamenTest DemiLeichtx"
    }
    assert designspace.instances[2].localisedStyleMapStyleName == {"de": "Regular"}
    instance_demilight_font = generator.generate_instance(designspace.instances[2])
    assert len(instance_demilight_font.info.openTypeNameRecords) == 5
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 0x0407,
            "nameID": 16,
            "string": "MehrNamenTest",
        },
        instance_demilight_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 0x0407,
            "nameID": 17,
            "string": "DemiLeicht",
        },
        instance_demilight_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 0x0407,
            "nameID": 1,
            "string": "MehrNamenTest DemiLeichtx",
        },
        instance_demilight_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 0x0407,
            "nameID": 2,
            "string": "Regular",
        },
        instance_demilight_font.info.openTypeNameRecords,
    )
    # check if lib-public.fontInfo-openTypeNameRecords is merged correctly
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 0,
            "string": "Urheberrecht 2025",
        },
        instance_demilight_font.info.openTypeNameRecords,
    )

    # instance 3 introduce fontinfo overrides
    assert designspace.instances[3].familyName == "MyFont"
    assert designspace.instances[3].styleName == "Regular"
    assert designspace.instances[3].lib["public.fontInfo"]["versionMajor"] == 3
    assert designspace.instances[3].lib["public.fontInfo"]["versionMinor"] == 141
    assert designspace.instances[3].lib["public.fontInfo"]["xHeight"] == 70
    assert designspace.instances[3].localisedFamilyName == {"de": "MehrNamenTest"}
    assert designspace.instances[3].localisedStyleName == {}
    assert designspace.instances[3].localisedStyleMapFamilyName == {}
    assert designspace.instances[3].localisedStyleMapStyleName == {}
    assert {
        "platformID": 3,
        "encodingID": 1,
        "languageID": 1031,
        "nameID": 0,
        "string": "Urheberrecht 2025 Overriden",
    } in designspace.instances[3].lib["public.fontInfo"]["openTypeNameRecords"]
    instance_regular_font = generator.generate_instance(designspace.instances[3])
    assert instance_regular_font.info.familyName == "MyFont"
    assert instance_regular_font.info.styleName == "Regular"
    assert instance_regular_font.info.versionMajor == 3
    assert instance_regular_font.info.versionMinor == 141
    assert instance_regular_font.info.xHeight == 70
    # check if lib-public.fontInfo-openTypeNameRecords is merged correctly
    # same platformID, encodingID, languageID, nameID should only exist once
    assert len(instance_regular_font.info.openTypeNameRecords) == 3
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 0,
            "string": "Urheberrecht 2025 Overriden",
        },
        instance_regular_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 1,
            "string": "MehrNamenTest",
        },
        instance_regular_font.info.openTypeNameRecords,
    )
    assert_name_record_in_list(
        {
            "platformID": 3,
            "encodingID": 1,
            "languageID": 1031,
            "nameID": 16,
            "string": "MehrNamenTest",
        },
        instance_regular_font.info.openTypeNameRecords,
    )


def test_font_info_fallback_should_skip_english_in_localized(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "BagelFatOne-Regular.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))

    # fontmake calls `splitInterpolable` before constructing the Instantiator.
    # It does that to split a v5 designspace which may contain discrete axes into
    # 'interpolable' sub-designspaces. This code also handles generating instance
    # names from STAT-related elements like axis <labelname>. As part of this, it
    # can sometimes add "en" (English) names to the sub-doc instances' localized
    # names (English names are normally defined in the instance attributes, but
    # subsequent designspaceLib code wants to access all the instance names via
    # the same localized* interface).
    # The uf2ft code in Instantiator._generate_instance_info that handles
    # the localized instance names currently does not distinguish between the
    # true localized names and these "en" name duplicates, and ends up
    # writing unnecessary openTypeNameRecords for the latter.
    [(_, designspace2)] = designspaceLib.split.splitInterpolable(designspace)
    assert designspace.instances[0].localisedFamilyName == {}
    assert designspace2.instances[0].localisedFamilyName == {"en": "Bagel Fat One"}

    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace2, round_geometry=True
    )

    instance_font = generator.generate_instance(designspace2.instances[0])

    assert instance_font.info.familyName == "Bagel Fat One"
    assert instance_font.info.styleName == "Regular"
    assert instance_font.info.openTypeNameRecords is None


def test_data_independence(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )
    instance_font1 = generator.generate_instance(designspace.instances[0])
    designspace.instances[0].lib["aaaaaaaa"] = 1
    instance_font2 = generator.generate_instance(designspace.instances[0])

    instance_font1["l"].unicodes.append(2)
    assert instance_font1["l"].unicodes == [0x6C, 2]
    assert instance_font2["l"].unicodes == [0x6C]

    instance_font1["l"].lib["asdf"] = 1
    assert instance_font1["l"].lib == {"asdf": 1}
    assert not instance_font2["l"].lib

    generator.copy_lib["sdjkhsjdhjdf"] = 1
    instance_font1.lib["asdf"] = 1
    assert instance_font1.lib == {
        "asdf": 1,
        "blorb": "asasa",
        "designspace.location": [("weight", 100.0)],
        "public.skipExportGlyphs": [],
    }
    assert instance_font2.lib == {
        "blorb": "asasa",
        "designspace.location": [("weight", 100.0)],
        "public.skipExportGlyphs": [],
    }

    assert generator.copy_info.openTypeOS2Panose == [2, 11, 5, 4, 2, 2, 2, 2, 2, 4]
    generator.copy_info.openTypeOS2Panose.append(1000)
    assert instance_font1.info.openTypeOS2Panose == [2, 11, 5, 4, 2, 2, 2, 2, 2, 4]
    assert instance_font2.info.openTypeOS2Panose == [2, 11, 5, 4, 2, 2, 2, 2, 2, 4]

    # copy_feature_text not tested because it is a(n immutable) string

    assert not generator.skip_export_glyphs
    generator.skip_export_glyphs.extend(["a", "b"])
    assert not instance_font1.lib["public.skipExportGlyphs"]
    assert not instance_font2.lib["public.skipExportGlyphs"]
    instance_font1.lib["public.skipExportGlyphs"].append("z")
    assert not instance_font2.lib["public.skipExportGlyphs"]


def test_skipped_fontinfo_attributes():
    """Test that we consider all available font info attributes for copying."""
    import fontMath.mathInfo
    import fontTools.ufoLib

    SKIPPED_ATTRS = {
        "guidelines",
        "macintoshFONDFamilyID",
        "macintoshFONDName",
        "openTypeNameCompatibleFullName",
        "openTypeNamePreferredFamilyName",
        "openTypeNamePreferredSubfamilyName",
        "openTypeNameUniqueID",
        "openTypeNameWWSFamilyName",
        "openTypeNameWWSSubfamilyName",
        "postscriptFontName",
        "postscriptFullName",
        "postscriptUniqueID",
        "styleMapFamilyName",
        "styleMapStyleName",
        "styleName",
        "woffMetadataUniqueID",
        "year",
    }

    assert (
        fontTools.ufoLib.fontInfoAttributesVersion3
        - set(fontMath.mathInfo._infoAttrs.keys())
        - {"postscriptWeightName"}  # Handled in fontMath specially.
        - ufo2ft.instantiator.UFO_INFO_ATTRIBUTES_TO_COPY_TO_INSTANCES
        == SKIPPED_ATTRS
    )


def test_static_font_default_instance_inherits_all_fontinfo(data_dir, ufo_module):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "DesignspaceTest" / "DesignspaceTest-static.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))

    assert len(designspace.sources) == 1  # single-master, static font
    assert len(designspace.instances) == 1
    # the default source's fontinfo.plist has a `postscriptFontName`
    designspace.sources[0].font.info.postscriptFontName = "MyFont-Light"

    # the DS instance does not have a `postScriptFontName` attribute, nor
    # does it have a `public.fontInfo` dict
    assert designspace.instances[0].postScriptFontName is None
    assert "public.fontInfo" not in designspace.instances[0].lib

    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )
    instance_font = generator.generate_instance(designspace.instances[0])

    # the instance inherits the postscriptFontName from the default source's
    # fontinfo.plist
    assert instance_font.info.postscriptFontName == "MyFont-Light"


def test_designspace_v5_discrete_axis_raises_error(data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "MutatorSansLite" / "MutatorFamily_v5_discrete_axis.designspace"
    )
    # The error message should advise to use `splitInterpolable()`
    with pytest.raises(
        ufo2ft.instantiator.InstantiatorError, match="splitInterpolable"
    ):
        ufo2ft.instantiator.Instantiator.from_designspace(designspace)


def test_opentype_os2_panose_merging(ufo_module):
    """Test that openTypeOS2Panose values are properly merged across sources.

    Only panose values that are identical across all sources should be copied
    to instances. Different values should be set to 0.
    """
    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=300, maximum=900
    )

    font1 = ufo_module.Font()
    font1.info.openTypeOS2Panose = [2, 11, 5, 2, 4, 5, 4, 2, 2, 4]  # default source

    font2 = ufo_module.Font()
    font2.info.openTypeOS2Panose = [
        2,
        11,
        8,  # different at index 2
        2,
        4,
        5,
        4,
        2,
        2,
        4,
    ]

    font3 = ufo_module.Font()
    font3.info.openTypeOS2Panose = [
        2,
        11,
        5,
        3,  # different at index 3
        4,
        5,
        4,
        2,
        2,
        4,
    ]

    d.addSourceDescriptor(location={"Weight": 300}, font=font1)
    d.addSourceDescriptor(location={"Weight": 600}, font=font2)
    d.addSourceDescriptor(location={"Weight": 900}, font=font3)
    d.addInstanceDescriptor(styleName="Regular", location={"Weight": 400})
    d.addInstanceDescriptor(styleName="Bold", location={"Weight": 700})

    generator = ufo2ft.instantiator.Instantiator.from_designspace(d)

    instance1 = generator.generate_instance(d.instances[0])
    instance2 = generator.generate_instance(d.instances[1])

    # Indices 2 and 3 differ across sources, so they should be 0
    # All other indices are the same across sources
    expected_panose = [2, 11, 0, 0, 4, 5, 4, 2, 2, 4]

    assert instance1.info.openTypeOS2Panose == expected_panose
    assert instance2.info.openTypeOS2Panose == expected_panose


def test_opentype_os2_panose_all_different(ufo_module):
    """Test that when all panose values differ, the attribute is deleted."""
    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=300, maximum=900
    )

    # Create fonts with completely different panose values
    font1 = ufo_module.Font()
    font1.info.openTypeOS2Panose = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

    font2 = ufo_module.Font()
    font2.info.openTypeOS2Panose = [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]

    d.addSourceDescriptor(location={"Weight": 300}, font=font1)
    d.addSourceDescriptor(location={"Weight": 900}, font=font2)
    d.addInstanceDescriptor(styleName="Regular", location={"Weight": 600})

    generator = ufo2ft.instantiator.Instantiator.from_designspace(d)
    instance = generator.generate_instance(d.instances[0])

    # All values differ, so openTypeOS2Panose should be unset
    assert instance.info.openTypeOS2Panose is None


def test_opentype_os2_panose_missing_in_some_sources(ufo_module):
    """Test handling when some sources don't have panose values."""
    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=300, maximum=900
    )

    font1 = ufo_module.Font()
    font1.info.openTypeOS2Panose = [2, 11, 5, 2, 4, 5, 4, 2, 2, 4]

    # Second font doesn't have panose, doesn't contribute
    font2 = ufo_module.Font()
    assert font2.info.openTypeOS2Panose is None

    font3 = ufo_module.Font()
    font3.info.openTypeOS2Panose = [2, 11, 5, 2, 4, 5, 4, 2, 2, 4]

    d.addSourceDescriptor(location={"Weight": 300}, font=font1)
    d.addSourceDescriptor(location={"Weight": 600}, font=font2)
    d.addSourceDescriptor(location={"Weight": 900}, font=font3)
    d.addInstanceDescriptor(styleName="Regular", location={"Weight": 400})

    generator = ufo2ft.instantiator.Instantiator.from_designspace(d)
    instance = generator.generate_instance(d.instances[0])

    # The default source's panose should be copied since font2 has None and
    # font3 has same panose as font1
    assert instance.info.openTypeOS2Panose == [2, 11, 5, 2, 4, 5, 4, 2, 2, 4]


def test_opentype_os2_panose_single_source(ufo_module):
    """Test that panose values are preserved as-is when there's only one source.

    Cf. https://github.com/googlefonts/fontc/issues/1609
    """
    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=400, maximum=900
    )

    font1 = ufo_module.Font()
    font1.info.openTypeOS2Panose = [2, 11, 5, 2, 4, 5, 4, 2, 2, 4]

    d.addSourceDescriptor(location={"Weight": 400}, font=font1)
    d.addInstanceDescriptor(styleName="Regular", location={"Weight": 400})

    generator = ufo2ft.instantiator.Instantiator.from_designspace(d)

    instance = generator.generate_instance(d.instances[0])

    # With only one source, panose should be preserved as-is
    assert instance.info.openTypeOS2Panose == [2, 11, 5, 2, 4, 5, 4, 2, 2, 4]


def test_opentype_os2_panose_no_mutation_of_default(ufo_module):
    """Test that processing panose values doesn't mutate the default source."""
    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=300, maximum=900
    )

    font1 = ufo_module.Font()
    original_panose = [2, 11, 5, 2, 4, 5, 4, 2, 2, 4]
    font1.info.openTypeOS2Panose = original_panose.copy()

    font2 = ufo_module.Font()
    font2.info.openTypeOS2Panose = [
        2,
        11,
        8,  # different at index 2
        2,
        4,
        5,
        4,
        2,
        2,
        4,
    ]

    d.addSourceDescriptor(location={"Weight": 300}, font=font1)
    d.addSourceDescriptor(location={"Weight": 900}, font=font2)
    d.addInstanceDescriptor(styleName="Regular", location={"Weight": 600})

    generator = ufo2ft.instantiator.Instantiator.from_designspace(d)
    instance = generator.generate_instance(d.instances[0])

    # The instance should have merged panose with 0 at index 2
    assert instance.info.openTypeOS2Panose == [2, 11, 0, 2, 4, 5, 4, 2, 2, 4]

    # The default source should remain unchanged
    assert font1.info.openTypeOS2Panose == original_panose
    assert d.default.font.info.openTypeOS2Panose == original_panose


@pytest.mark.parametrize(
    "panose_data,expected",
    [
        pytest.param(
            [[2, 11, 5], [2, 11, 8, 2, 4, 5, 4, 2, 2, 4, 99, 88, 77, 66, 55]],
            [2, 11, 0, 0, 0, 0, 0, 0, 0, 0],
            id="zero-padded",  # At least one source has length < 10 (will be padded)
        ),
        pytest.param(
            [
                [2, 11, 5, 2, 4, 5, 4, 2, 2, 4, 99, 88],
                [2, 11, 8, 2, 4, 5, 4, 2, 2, 4, 77, 66, 55],
            ],
            [2, 11, 0, 2, 4, 5, 4, 2, 2, 4],
            id="truncated",  # All sources have length > 10 (will be truncated)
        ),
    ],
)
def test_opentype_os2_panose_malformed_lengths(panose_data, expected, caplog):
    """Test handling of panose values with incorrect lengths (ufoLib2 only)."""
    ufo_module = pytest.importorskip("ufoLib2")

    d = designspaceLib.DesignSpaceDocument()
    d.addAxisDescriptor(
        name="Weight", tag="wght", minimum=300, default=300, maximum=900
    )

    fonts = []
    for i, panose_values in enumerate(panose_data):
        font = ufo_module.Font()
        font.info.openTypeOS2Panose = panose_values
        fonts.append(font)
        d.addSourceDescriptor(location={"Weight": 300 + i * 600}, font=font)

    d.addInstanceDescriptor(styleName="Regular", location={"Weight": 600})

    with caplog.at_level(logging.WARNING):
        generator = ufo2ft.instantiator.Instantiator.from_designspace(d)
        instance = generator.generate_instance(d.instances[0])

    # Should log a warning about invalid length
    assert (
        "openTypeOS2Panose values in designspace sources have invalid length"
        in caplog.text
    )

    # Should produce a valid result with exactly 10 values
    assert instance.info.openTypeOS2Panose == expected
    assert len(instance.info.openTypeOS2Panose) == 10


def test_strict_math_glyph(ufo_module, data_dir):
    designspace = designspaceLib.DesignSpaceDocument.fromfile(
        data_dir / "InstantiatorStrictMathGlyph" / "StrictMathGlyph.designspace"
    )
    designspace.loadSourceFonts(openFontFactory(ufo_module=ufo_module))
    generator = ufo2ft.instantiator.Instantiator.from_designspace(
        designspace, round_geometry=True
    )
    fonts = [
        generator.generate_instance(instance) for instance in designspace.instances
    ]
    assert len(fonts) == 1
    glyph = fonts[0]["test"]
    assert len(glyph.contours) == 1
    assert len(glyph.contours[0].points) == 16