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https://issues.apache.org/jira/browse/PDFBOX-3019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14957472#comment-14957472
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Tilman Hausherr edited comment on PDFBOX-3019 at 10/14/15 6:31 PM:
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Here's a way to test for differences when building:
1) copy pdf files in the directory {{PDFBox
reactor\pdfbox\src\test\resources\input}}
2) in TestTextStripper.java near the line {{if (!expectedFile.exists())}}
deactivate the fail() call, to prevent stop at first failure
3) run the test (it will fail)
4) copy the new txt files from {{PDFBox reactor\pdfbox\target\test-output}} to
{{PDFBox reactor\pdfbox\src\test\resources\input}}
5) make changes to test regressions
This can also be done across versions, i.e. fill the txt files with an old
version, then run with the new one.
was (Author: tilman):
Here's a way to test for differences:
1) copy pdf files in the directory {{PDFBox
reactor\pdfbox\src\test\resources\input}}
2) in TestTextStripper.java near the line {{if (!expectedFile.exists())}}
deactivate the fail() call, to prevent stop at first failure
3) run the test (it will fail)
4) copy the new txt files from {{PDFBox reactor\pdfbox\target\test-output}} to
{{PDFBox reactor\pdfbox\src\test\resources\input}}
5) make changes to test regressions
This can also be done across versions, i.e. fill the txt files with an old
version, then run with the new one.
> Optimize tolerance settings
> ---------------------------
>
> Key: PDFBOX-3019
> URL: https://issues.apache.org/jira/browse/PDFBOX-3019
> Project: PDFBox
> Issue Type: Bug
> Components: Text extraction
> Affects Versions: 2.0.0
> Reporter: Ben McCann
> Fix For: 2.0.0
>
> Attachments: jbl-example-com.pdf
>
>
> From testing on my internal dataset I believe there might be some regression
> in the effectiveness of PDFTextStripper.
> Here's an [example
> doc|http://rampages.us/rhodesc1/wp-content/uploads/sites/4737/2014/07/Resume-Connor-Rhodes.pdf]
> I found on the web, which converted better in 1.8 than 2.0. Notice that it
> extracts "J e a n e t t e A c o s t a ; S e r v i c e M a n a g e r a t
> M a d F o x B r e w i n g C o m p a n y". It doesn't seem like there's
> very much space between the letters in the pdf, so it's curious to me that it
> didn't do too well.
> I realize this is an area where we probably can't strive for perfection. Yet,
> it does seem to me that from 1.8 to 2.0 we may have taken a step backwards. I
> believe there's some sort of regression test for PDFToImage which exports a
> set of pdfs to images at two different commits and looks at what the
> differences are. Do we have the same sort of thing for PDFTextStripper? If
> not, can we build one by pulling docs off the public web? I'd be willing to
> contribute to this endeavor.
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