pingcap / pingcap/tiflash

Introduce fuzzer tests

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#5,844 0 comments 3 reactions 0 assignees View on GitHub

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good first issue type/enhancement
Dominant language
C++
Stars
1k
Forks
423
Avg merge
1d 15h
Merged PRs (30d)
24

Description

Enhancement

We have some randomized tests, for example, https://github.com/pingcap/tiflash/pull/5150.

In these randomized tests, the selection of operation is purely random. As an improvement, we can use fuzzers to drive these tests. Fuzzers can automatically choose input workloads based on the observation of the execution path coverage, which is much more efficient to cover different kind of branches.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the randomized tests described in pull request 5150 and how they select operations. Investigate how a fuzzer could drive those tests using execution-path coverage. Done means introducing fuzzer tests that cover workloads more efficiently than purely random operation selection.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
testing-qa
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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