Hey there! I maintain Hypothesis, and work on HypoFuzz, a coverage-guided fuzzer for Hypothesis tests. I spend a lot of time thinking about property-based testing and fuzzing.
tybug
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July 2025
Created 92 commits in 4 repositories
Created 1 repository
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tybug/pytest-run-parallel
Python
This contribution was made on Jul 15
Created a pull request in Quansight-Labs/pytest-run-parallel that received 7 comments
Change hypothesis check to be version based
Hypothesis is ~basically thread safe as of 6.135.32 (see HypothesisWorks/hypothesis#4451). This changes the check for hypothesis to be version-base…
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7
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Opened 23 other pull requests in 2 repositories
HypothesisWorks/hypothesis
12
merged
1
open
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Speculative fix for
strategy.labelthread safetyThis contribution was made on Jul 18 -
Fix strategy validation thread-safety
This contribution was made on Jul 15
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Fix a remaining thread safety issue in the random deprecation warning
This contribution was made on Jul 14
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Fix
ensure_free_stackframesthread-safetyThis contribution was made on Jul 14 -
Re-raise
DeadlineExceededfrom backendsThis contribution was made on Jul 13 -
IntList optimizations
This contribution was made on Jul 12
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Optimize
sampled_fromand stateful performanceThis contribution was made on Jul 12 -
Fix a race in
@initializeThis contribution was made on Jul 11 -
Fix a dict size iteration error in
register_randomThis contribution was made on Jul 3 -
Improve
sys.monitoringandcalc_labelthread safetyThis contribution was made on Jul 3 -
Make the
ensure_free_stackframeswarning thread-safeThis contribution was made on Jul 2 -
Fix thread safety of
@ruledefinitionsThis contribution was made on Jul 2 -
Improve threading compatibility of core strategy definitions
This contribution was made on Jul 2
Zac-HD/hypofuzz
1
open
9
merged
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Add support for unittest and class-based pytest
This contribution was made on Jul 18
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Styling and slight wording change
This contribution was made on Jul 17
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React profiling + linting, and stop fuzzing target when a failure is found
This contribution was made on Jul 17
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Fix and test
targetbucketing codeThis contribution was made on Jul 17 -
Skip tests without
Phase.generateThis contribution was made on Jul 16 -
Add
hypofuzz.detection.in_hypofuzz_run, bucket target valuesThis contribution was made on Jul 16 -
Preserve worker stats based on all events, not visible ones
This contribution was made on Jul 16
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Track and show fatal failures
This contribution was made on Jul 16
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Refactor to use a single queue
This contribution was made on Jul 4
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Bump required hypothesis version for a bugfix
This contribution was made on Jul 4
Reviewed 10 pull requests in 3 repositories
HypothesisWorks/hypothesis
7 pull requests
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Re-raise
DeadlineExceededfrom backendsThis contribution was made on Jul 19 -
Speculative fix for
strategy.labelthread safetyThis contribution was made on Jul 18 -
Fix strategy validation thread-safety
This contribution was made on Jul 15
-
Optimize
sampled_fromand stateful performanceThis contribution was made on Jul 12 -
IntList optimizations
This contribution was made on Jul 12
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Support for numpy.ndarray and pandas.Series with any python object as entry
This contribution was made on Jul 11
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Improve threading compatibility of core strategy definitions
This contribution was made on Jul 2
Zac-HD/hypofuzz
2 pull requests
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Re-execute inputs for coverage stability
This contribution was made on Jul 4
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Use a
distribute_nodesfunctionThis contribution was made on Jul 4
tybug/ossapi
1 pull request
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Add
Search Beatmaps PassedendpointThis contribution was made on Jul 12
Opened 3 issues in 2 repositories
Zac-HD/hypofuzz
2
open
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Calculate
p_mutateusing multi-armed banditThis contribution was made on Jul 4 -
Display predicted coverage curves for different generation strategies
This contribution was made on Jul 4
HypothesisWorks/hypothesis
1
open
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Race condition error in
recursive_propertyThis contribution was made on Jul 16
2
contributions
in private repositories
Jul 18