Add a pixel test for rendering TrueType font characters.

Test for rendering TrueType font characters. This test case will be
suppressed until bug pdfium:1388 is fixed.

Bug: pdfium:1388
Change-Id: I3b9d65752bac5cefcc0c7c8639247ab86b0f6058
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/60033
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

testing/SUPPRESSIONS

diff --git a/testing/SUPPRESSIONS b/testing/SUPPRESSIONS
index dedfbbd..d3f05df 100644
--- a/testing/SUPPRESSIONS
+++ b/testing/SUPPRESSIONS
@@ -334,6 +334,9 @@
 # TODO(pdfium:1331): Remove after associated bug is fixed
 bug_1331.in * * *
 
+# TODO(pdfium:1388): Remove after associated bug is fixed
+bug_1388.in * * *
+
 # xfa_specific
 
 # TODO(pdfium:1107): Remove after associated bug is fixed

testing/resources/pixel/bug_1388.in

diff --git a/testing/resources/pixel/bug_1388.in b/testing/resources/pixel/bug_1388.in
new file mode 100644
index 0000000..e6c0fd4
--- /dev/null
+++ b/testing/resources/pixel/bug_1388.in
@@ -0,0 +1,152 @@
+{{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 0 345.87 344.348]
+  /Resources <<
+    /ProcSet [/PDF /Text]
+    /Font <<
+      /TT0 5 0 R
+    >>
+  >>
+>>
+endobj
+{{object 4 0}} <<
+  {{streamlen}}
+>>
+stream
+q
+0 0 345.869995 344.348114 re
+W* n
+1 0 0 1 -5.669983 -493.817902 cm
+BT
+0 0 0 rg
+0 0 0 RG
+2.057 w
+/TT0 72 Tf
+2 Tr 33.394 736.212 Td
+( )Tj
+ET
+/TouchUp_TextEdit MP
+q
+1 0 0 1 0 841.95 cm
+17.85 0 559.65 -841.95 re
+W n
+q
+307.2 -330 116.6 -9.75 re
+W n
+1 0 0 1 0 -841.95 cm
+BT
+Q
+Q
+Q
+endstream
+endobj
+{{object 5 0}} <<
+  /Type /Font
+  /Subtype /TrueType
+  /FirstChar 32
+  /BaseFont /AAAAAD+Test
+  /FontDescriptor 6 0 R
+  /ToUnicode 7 0 R
+  /LastChar 41
+  /Widths [1055 1055 1055 1055 1055 1055 1055 1055 1055 1055]
+>>
+endobj
+{{object 6 0}} <<
+  /Type /FontDescriptor
+  /Descent -68
+  /MissingWidth 1000
+  /CapHeight 1149
+  /StemV 0
+  /FontFile2 8 0 R
+  /Flags 4
+  /FontBBox [0 -215 1000 932]
+  /FontName /AAAAAD+Test
+  /ItalicAngle 0
+  /Ascent 933
+>>
+endobj
+{{object 7 0}} <<
+  {{streamlen}}
+>>
+stream
+/CIDInit /ProcSet findresource begin 12 dict begin begincmap /CIDSystemInfo <<
+/Registry (AAAAAB+Test) /Ordering (UCS) /Supplement 0 >> def
+/CMapName /AAAAAB+Test def
+1 begincodespacerange <20> <29> endcodespacerange
+10 beginbfrange
+<20> <20> <b0a9>
+<21> <21> <bd80>
+<22> <22> <c601>
+<23> <23> <c218>
+<24> <24> <c99d>
+<25> <25> <c11c>
+<26> <26> <c790>
+<27> <27> <c6a9>
+<28> <28> <ae30>
+<29> <29> <ad00>
+endbfrange
+endcmap CMapName currentdict /CMap defineresource pop end end
+endstream
+endobj
+{{object 8 0}} <<
+  /Filter [/ASCIIHexDecode /FlateDecode]
+  {{streamlen}}
+>>
+stream
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+{{xref}}
+{{trailer}}
+{{startxref}}
+%%EOF

testing/resources/pixel/bug_1388_expected.pdf.0.png

diff --git a/testing/resources/pixel/bug_1388_expected.pdf.0.png b/testing/resources/pixel/bug_1388_expected.pdf.0.png
new file mode 100644
index 0000000..a78094f
--- /dev/null
+++ b/testing/resources/pixel/bug_1388_expected.pdf.0.png
Binary files differ