Add a suite of property-based tests with Hypothesis
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- Dominant language
- Python
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Description
Hypothesis is a library for writing property-based tests in Python: you describe input data and make assertions that should be true for all examples, then Hypothesis tries to find a counterexample. This came up in #1840, because data == decode(encode(data)) is a classic property.
We could add a (initially small) suite of property-based tests, to complement the traditional example-based tests Xarray is already using. Keeping them in independent files will ensure that they run in CI but the dependency on Hypothesis remains optional for local development.
I have moved jobs and don't have time to do this myself, but I'd be very happy to help anyone who does 😄
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Review Xarray's existing example-based tests and CI configuration first. Define a small initial set of properties, keep the Hypothesis tests in independent files, and verify that they run in CI while Hypothesis remains optional for local development.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- testing-qa
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 28/100