Tilman Hausherr created PDFBOX-2034:
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Summary: 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
This is a follow-up of PDFBOX-1977, which was created by John.
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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;
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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.
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