Add a test case for bad SMask rendering.
BUG=pdfium:1236
Change-Id: Iaeb4494200b59f61223d86dcb88903d014ff766b
Reviewed-on: https://pdfium-review.googlesource.com/c/50810
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/testing/resources/pixel/bug_1236.in b/testing/resources/pixel/bug_1236.in
new file mode 100644
index 0000000..d99eabc
--- /dev/null
+++ b/testing/resources/pixel/bug_1236.in
@@ -0,0 +1,77 @@
+{{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 0 400 400]
+ /Resources <<
+ /XObject << /Xop2 5 0 R >>
+ >>
+>>
+endobj
+{{object 4 0}} <<
+ {{streamlen}}
+>>
+stream
+q
+200 0 0 200 0 0 cm
+/Xop2 Do
+Q
+endstream
+endobj
+{{object 5 0}} <<
+ /Type /XObject
+ /Subtype /Image
+ /Width 400
+ /Height 400
+ /BitsPerComponent 1
+ /Filter [/ASCIIHexDecode /JBIG2Decode]
+ /ColorSpace /DeviceGray
+ /JBIG2Globals 6 0 R
+ /SMask 7 0 R
+ {{streamlen}}
+>>
+stream
+000000003000010000001300000dea00000353000017110000171151000000000001260001000000
+3500000dea000003530000000000000000020003fffdff02fefefeff7f86530fb6c922cfff7fff7f
+ff7fff7fff7fff7fff7fff7fffac
+endstream
+endobj
+{{object 6 0}} <<
+ /Filter /ASCIIHexDecode
+ {{streamlen}}
+>>
+stream
+0000000000010000000027000003fffdff02fefefe00000001000000010aabcf6e691c9aa3b0303f
+ff7fff7fff7f4fdfffac
+endstream
+endobj
+{{object 7 0}} <<
+ /Type /XObject
+ /Subtype /Image
+ /Width 100
+ /Height 100
+ /BitsPerComponent 8
+ /ColorSpace /DeviceGray
+ /Filter [/ASCIIHexDecode /FlateDecode]
+ {{streamlen}}
+>>
+stream
+789cedc1310100000c02a0dd6b60ffa2a6f003120000000060ed0000000080b92f6770e862
+endstream
+endobj
+{{xref}}
+{{trailer}}
+{{startxref}}
+%%EOF
diff --git a/testing/resources/pixel/bug_1236_expected.pdf.0.png b/testing/resources/pixel/bug_1236_expected.pdf.0.png
new file mode 100644
index 0000000..114e34a
--- /dev/null
+++ b/testing/resources/pixel/bug_1236_expected.pdf.0.png
Binary files differ
