Add reference tests for SimFang variant and XiaoBiaoSong fonts

Add eq tests for the two newly supported Chinese font name variants
(仿宋体 and 小标宋) to verify correct GBK encoding detection.

test/pdfs/.gitignore

@@ -16,6 +16,7 @@
 !bug1727053.pdf
 !issue18408_reduced.pdf
 !bug1907000_reduced.pdf
+!SimFang-variant.pdf
 !bug1953099.pdf
 !issue11913.pdf
 !issue2391-1.pdf
@@ -81,6 +82,7 @@
 !issue7835.pdf
 !issue11922_reduced.pdf
 !issue7855.pdf
+!XiaoBiaoSong.pdf
 !issue11144_reduced.pdf
 !issue7872.pdf
 !issue7901.pdf

test/pdfs/SimFang-variant.pdf

@@ -0,0 +1,175 @@
+%PDF-1.4
+%âãÏÓ
+4 0 obj
+<<
+/Type /Font
+/Subtype /TrueType
+/Name /F5
+/BaseFont /#BA#DA#CC#E5
+/Encoding /WinAnsiEncoding
+/FirstChar 0
+/LastChar 255
+/Widths [500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500]
+/FontDescriptor <<
+/MissingWidth 1000
+/Ascent 1000
+/CapHeight 1000
+/Descent -200
+/Flags 4
+/FontBBox [0 -200 1000 1000]
+/FontName <D0A1B1EACBCE>
+/ItalicAngle 0
+/StemV 100
+>>
+>>
+endobj
+6 0 obj
+<<
+/ProcSet [/PDF]
+>>
+endobj
+7 0 obj
+<<
+/Type /Encoding
+/Differences [65 /G065]
+>>
+endobj
+9 0 obj
+<<
+/Length 103
+/Filter /FlateDecode
+>>
+stream
+xœE<EFBFBD>»
€0DûHÙáFÀø¼¢‚ý[âÄ<C3A2>ÊOwOg7¸áÜjÑfx&8îZä@ã
º€VE!˜´„¹‰€<»L-v<>$|3©J~W3Wž^¿´Š9ÕMòÿK‡«–Žh#Þ
+
+endstream
+endobj
+8 0 obj
+<<
+/G065 9 0 R
+>>
+endobj
+5 0 obj
+<<
+/Name /X0
+/Type /Font
+/Subtype /Type3
+/Resources 6 0 R
+/FontBBox [0 0 96 96]
+/FontMatrix [0.00999 0 0 0.00999 0 0]
+/FirstChar 65
+/LastChar 65
+/Encoding 7 0 R
+/CharProcs 8 0 R
+/Widths [96]
+>>
+endobj
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+/Filter /FlateDecode
+/Length 179
+>>
+stream
+xœm<EFBFBD>9
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+endstream
+endobj
+13 0 obj
+<<
+/Filter [/ASCII85Decode /LZWDecode]
+/Length 488
+>>
+stream
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+endstream
+endobj
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+endobj
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+<<
+/Filter [/ASCII85Decode /LZWDecode]
+/Width 57
+/Height 78
+/ColorSpace 12 0 R
+/BitsPerComponent 8
+/Length 384
+>>
+stream
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+endobj
+3 0 obj
+<<
+/Type /Page
+/CropBox [0 0 462.5 625.9]
+/MediaBox [0 0 462.5 625.9]
+/Resources <<
+/Font <<
+/TT0 4 0 R
+/T3_0 5 0 R
+>>
+>>
+/Contents 10 0 R
+/Thumb 11 0 R
+/Parent 2 0 R
+>>
+endobj
+2 0 obj
+<<
+/Type /Pages
+/Kids [3 0 R]
+/Count 1
+>>
+endobj
+1 0 obj
+<<
+/Type /Catalog
+/Pages 2 0 R
+>>
+endobj
+14 0 obj
+<<
+/ModDate (D:20260303075300Z)
+/Producer (Pdftools SDK)
+>>
+endobj
+xref
+0 15
+0000000000 65535 f
+0000003528 00000 n
+0000003471 00000 n
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+0000003577 00000 n
+trailer
+<<
+/Size 15
+/Root 1 0 R
+/Info 14 0 R
+/ID [<42230467D173E23BC1D16DD8BFFDB792> <5275A2D429D61242E799751CBE8A1B51>]
+>>
+startxref
+3653
+%%EOF

test/test_manifest.json

@@ -13971,5 +13971,19 @@
     "md5": "ead167e0328f1a1f4f8901cee501a9c4",
     "rounds": 1,
     "type": "eq"
+  },
+  {
+    "id": "SimFang-variant",
+    "file": "pdfs/SimFang-variant.pdf",
+    "md5": "d412460812cd940917091e8975620faf",
+    "rounds": 1,
+    "type": "eq"
+  },
+  {
+    "id": "XiaoBiaoSong",
+    "file": "pdfs/XiaoBiaoSong.pdf",
+    "md5": "7072f6763bf2f0d6df14d5fc86962c5a",
+    "rounds": 1,
+    "type": "eq"
   }
 ]