Add a pixel test for incorrect text rendering on macOS.
This CL adds a simplified pixel test for crbug.com/1356149, in which a
PDF's embedded font was rendered with a long tailing shadow above each
character when using AGG on macOS.
This pixel test can be rendered correctly on other platforms or by
using Skia/SkiaPaths renderer.
Bug: chromium:1356149
Change-Id: I7559a8c9c1ff75c1083da4c8032852353c9dd09d
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/96930
Commit-Queue: Nigi <nigi@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/testing/SUPPRESSIONS b/testing/SUPPRESSIONS
index 748d2cf..36dd12a 100644
--- a/testing/SUPPRESSIONS
+++ b/testing/SUPPRESSIONS
@@ -515,6 +515,9 @@
# TODO(pdfium:1331): Remove after associated bug is fixed
bug_1331.in * * * *
+# TODO(chromium:1356149): Remove after associated bug is fixed
+bug_1356149.in mac * * agg
+
# TODO(pdfium:1457): Remove after associated bug is fixed
bug_1457.in * * * *
diff --git a/testing/resources/pixel/bug_1356149.in b/testing/resources/pixel/bug_1356149.in
new file mode 100644
index 0000000..6dd6502
--- /dev/null
+++ b/testing/resources/pixel/bug_1356149.in
@@ -0,0 +1,216 @@
+{{header}}
+{{object 1 0}} <<
+ /Type /Catalog
+ /Pages 2 0 R
+>>
+endobj
+{{object 2 0}} <<
+ /Type /Pages
+ /Count 1
+ /Kids [3 0 R]
+>>
+endobj
+{{object 3 0}} <<
+ /Type /Page
+ /Parent 2 0 R
+ /Contents 4 0 R
+ /MediaBox [0 0 100 100]
+ /Resources <<
+ /ProcSet [/PDF /Text]
+ /Font <<
+ /T1_0 5 0 R
+ >>
+ >>
+>>
+endobj
+{{object 4 0}} <<
+ {{streamlen}}
+>>
+stream
+BT
+/T1_0 10 Tf
+-0.02 Tc 0.02 Tw
+1 0 0 1 10 20 Tm
+[(\201)-3.6(\027\036)-5.4(\007)-6.6(\007)-5(\026)-2.5(\034\033)]TJ
+ET
+endstream
+endobj
+{{object 5 0}} <<
+ /Type /Font
+ /Subtype /Type1
+ /BaseFont /JXUIQN+BernhardGothic-Hvy
+ /Encoding 6 0 R
+ /FirstChar 1
+ /FontDescriptor 7 0 R
+ /LastChar 173
+ /Widths [665 576 576 625 576 255 535 616 247 0 250 529 970 540 534 529 531 542
+ 518 714 522 238 447 352 372 487 200 399 235 538 499 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 543 576 535 0 0 0 0 0 0 0 0 0 0 0 620
+ 0 635 561 0 0 0 0 0 0 0 0 0 0 0 0 542 0 0 332 0 0 0 0 0 0 0 0 0 0 0 0
+ 500]
+>>
+endobj
+{{object 6 0}} <<
+ /Type /Encoding
+ /BaseEncoding /WinAnsiEncoding
+ /Differences [1 /H /zero /two /N /one /period /o /V /comma /.notdef
+ /quotesingle /E /W /n /d /b /u /p /fi /w /e /l /c /t /r /a
+ /space /s /i /h /T 127 /g /three /S 141 /C 143 /D /B 157 /P 160
+ /f 173 /bullet]
+>>
+endobj
+{{object 7 0}} <<
+ /Type /FontDescriptor
+ /Ascent 1000
+ /CapHeight 666
+ /CharSet (/H /zero /two /N /one /period /o /V /comma /quotesingle /E /W /n /d
+ /b /u /p /fi /w /e /l /c /t /r /a /space /s /i /h /T /g /three /S /C
+ /D /B /P /f /bullet)
+ /Descent -500
+ /Flags 4
+ /FontBBox [-500 -500 1500 1000]
+ /FontFamily (Bernhard Gothic)
+ /FontFile3 8 0 R
+ /FontName /JXUIQN+BernhardGothic-Hvy
+ /FontStretch /Normal
+ /FontWeight 700
+ /ItalicAngle 0
+ /StemV 144
+ /XHeight 472
+>>
+endobj
+{{object 8 0}} <<
+ /Subtype /Type1C
+ /Filter [/ASCIIHexDecode /FlateDecode]
+ {{streamlen}}
+>>
+stream
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+%%EOF
diff --git a/testing/resources/pixel/bug_1356149_expected.pdf.0.png b/testing/resources/pixel/bug_1356149_expected.pdf.0.png
new file mode 100644
index 0000000..93827a8
--- /dev/null
+++ b/testing/resources/pixel/bug_1356149_expected.pdf.0.png
Binary files differ
