tree b90ef07c5154afb0e5d30c1c91107136572c9d50
parent bd4d9f36b708439808aa488829e52d432497b593
author Lei Zhang <thestig@chromium.org> 1560890789 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1560890789 +0000

Add tests for the PostScript truncate operator.

Test how different PostScript truncate operations render using a pixel
test. On the second page, ideally there should be a green square if an
implementation follows the PostScript Language Reference and works with
numbers as floats. In which case, numbers larger than INT_MAX truncate
just fine. However, this test in Acrobat Readers draws a black square.
PDFium also draws a black square, so just add this test to document the
existing behavior, which emulates Acrobat's behavior.

Also add more test cases to the CPDF_PSEngine.Truncate unit test.

BUG=pdfium:1314

Change-Id: I32da10d0cca69fcf5ab97c887090ca3ca0f7775f
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/56414
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>