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https://issues.apache.org/jira/browse/PDFBOX-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr updated PDFBOX-2034:
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Description:
This is a follow-up of PDFBOX-1977, which was created by John.
====
TestFilters uses Random().nextLong() to generate a seed for random data, which
means that it is non-determinate. Depending on the seed value, the test may
fail or succeed.
====
So what we need is:
- a set of [deterministic
tests|http://martinfowler.com/articles/nonDeterminism.html]
- a set of non-deterministic tests
To see why, see the discussion in PDFBOX-1977.
was:
This is a follow-up of PDFBOX-1977, which was created by John.
====
TestFilters uses Random().nextLong() to generate a seed for random data, which
means that it is non-determinate. Depending on the seed value, the test may
fail or succeed.
Using the following seed resulted in the LZW filter failing (this has been
resolved in PDFBOX-1977):
final long seed = -6257105096642706464L;
====
So what we need is:
- a test that uses the seed above (one should temporarly recreate the mentioned
LZW filter bug to see that the test does indeed create a sequence so that it
fails!), alternatively save the exact sequence from PDFBOX-1977 into a file and
pass it through the filter
- a set of [deterministic
tests|http://martinfowler.com/articles/nonDeterminism.html]
- a set of non-deterministic tests
To see why, see the discussion in PDFBOX-1977.
> TestFilters is non-deterministic
> --------------------------------
>
> Key: PDFBOX-2034
> URL: https://issues.apache.org/jira/browse/PDFBOX-2034
> Project: PDFBox
> Issue Type: Improvement
> Affects Versions: 1.8.5, 2.0.0
> Reporter: Tilman Hausherr
> Priority: Minor
> Labels: LZW
>
> This is a follow-up of PDFBOX-1977, which was created by John.
> ====
> TestFilters uses Random().nextLong() to generate a seed for random data,
> which means that it is non-determinate. Depending on the seed value, the test
> may fail or succeed.
> ====
> So what we need is:
> - a set of [deterministic
> tests|http://martinfowler.com/articles/nonDeterminism.html]
> - a set of non-deterministic tests
> To see why, see the discussion in PDFBOX-1977.
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