1 files changed, 131 insertions, 0 deletions
diff --git a/Tests/ttLib/tables/S_V_G__test.py b/Tests/ttLib/tables/S_V_G__test.py
new file mode 100644
index 00000000..91b0f23a
--- /dev/null
+++ b/Tests/ttLib/tables/S_V_G__test.py
@@ -0,0 +1,131 @@
+import struct
+
+from fontTools.misc import etree
+from fontTools.misc.testTools import getXML, parseXML
+from fontTools.ttLib import TTFont
+from fontTools.ttLib.tables.S_V_G_ import table_S_V_G_
+
+import pytest
+
+
+def dump(table, ttFont=None):
+    print("\n".join(getXML(table.toXML, ttFont)))
+
+
+def strip_xml_whitespace(xml_string):
+    def strip_or_none(text):
+        text = text.strip() if text else None
+        return text if text else None
+
+    tree = etree.fromstring(xml_string)
+    for e in tree.iter("*"):
+        e.text = strip_or_none(e.text)
+        e.tail = strip_or_none(e.tail)
+    return etree.tostring(tree, encoding="utf-8")
+
+
+SVG_DOCS = [
+    strip_xml_whitespace(svg)
+    for svg in (
+        b"""\
+        <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1">
+          <defs>
+            <rect x="100" y="-200" width="300" height="400" id="p1"/>
+          </defs>
+          <g id="glyph1">
+            <use xlink:href="#p1" fill="#red"/>
+          </g>
+          <g id="glyph2">
+            <use xlink:href="#p1" fill="#blue"/>
+          </g>
+          <g id="glyph4">
+            <use xlink:href="#p1" fill="#green"/>
+          </g>
+        </svg>""",
+        b"""\
+        <svg xmlns="http://www.w3.org/2000/svg" version="1.1">
+          <g id="glyph3">
+            <path d="M0,0 L100,0 L50,100 Z"/>
+          </g>
+        </svg>""",
+    )
+]
+
+
+OTSVG_DATA = b"".join(
+    [
+        # SVG table header
+        b"\x00\x00"  # version (0)
+        b"\x00\x00\x00\x0a"  # offset to SVGDocumentList (10)
+        b"\x00\x00\x00\x00"  # reserved (0)
+        #  SVGDocumentList
+        b"\x00\x03"  # number of SVGDocumentRecords (3)
+        # SVGDocumentRecord[0]
+        b"\x00\x01"  # startGlyphID (1)
+        b"\x00\x02"  # endGlyphID (2)
+        b"\x00\x00\x00\x26"  # svgDocOffset (2 + 12*3 == 38 == 0x26)
+        + struct.pack(">L", len(SVG_DOCS[0]))  # svgDocLength
+        # SVGDocumentRecord[1]
+        + b"\x00\x03"  # startGlyphID (3)
+        b"\x00\x03"  # endGlyphID (3)
+        + struct.pack(">L", 0x26 + len(SVG_DOCS[0]))  # svgDocOffset
+        + struct.pack(">L", len(SVG_DOCS[1]))  # svgDocLength
+        # SVGDocumentRecord[2]
+        + b"\x00\x04"  # startGlyphID (4)
+        b"\x00\x04"  # endGlyphID (4)
+        b"\x00\x00\x00\x26"  # svgDocOffset (38); records 0 and 2 point to same SVG doc
+        + struct.pack(">L", len(SVG_DOCS[0]))  # svgDocLength
+    ]
+    + SVG_DOCS
+)
+
+OTSVG_TTX = [
+    '<svgDoc endGlyphID="2" startGlyphID="1">',
+    f"  <![CDATA[{SVG_DOCS[0].decode()}]]>",
+    "</svgDoc>",
+    '<svgDoc endGlyphID="3" startGlyphID="3">',
+    f"  <![CDATA[{SVG_DOCS[1].decode()}]]>",
+    "</svgDoc>",
+    '<svgDoc endGlyphID="4" startGlyphID="4">',
+    f"  <![CDATA[{SVG_DOCS[0].decode()}]]>",
+    "</svgDoc>",
+]
+
+
+@pytest.fixture
+def font():
+    font = TTFont()
+    font.setGlyphOrder([".notdef"] + ["glyph%05d" % i for i in range(1, 30)])
+    return font
+
+
+def test_decompile_and_compile(font):
+    table = table_S_V_G_()
+    table.decompile(OTSVG_DATA, font)
+    assert table.compile(font) == OTSVG_DATA
+
+
+def test_decompile_and_dump_ttx(font):
+    table = table_S_V_G_()
+    table.decompile(OTSVG_DATA, font)
+
+    dump(table, font)
+    assert getXML(table.toXML, font) == OTSVG_TTX
+
+
+def test_load_from_ttx_and_compile(font):
+    table = table_S_V_G_()
+    for name, attrs, content in parseXML(OTSVG_TTX):
+        table.fromXML(name, attrs, content, font)
+    assert table.compile(font) == OTSVG_DATA
+
+
+def test_round_trip_ttx(font):
+    table = table_S_V_G_()
+    for name, attrs, content in parseXML(OTSVG_TTX):
+        table.fromXML(name, attrs, content, font)
+    compiled = table.compile(font)
+
+    table = table_S_V_G_()
+    table.decompile(compiled, font)
+    assert getXML(table.toXML, font) == OTSVG_TTX