I'm running into an issue with the Kendo React Grids after introducing snapshot testing: The filtering cells seem to generate properties with GUIDs that change each render, making it impossible to snapshot test. You can see an example in the attached screenshot.
This is probably more of a feature request: Could thing be changed so the grid filter cells by default render in a predictable, repeatable way so they can be snapshot tested? Is there a better place to request this?
2 Answers, 1 is accepted
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Hello, Eric,
This is indeed caused by the internal use of a guid generator function that ensures that every instance of the component is unique.
The approach listed in the Jest documentation is also a good approach and it is actually the one recommended by them in this cases:
https://github.com/facebook/jest/blob/master/docs/SnapshotTesting.md#property-matchers
We may consider removing the source of randomness directly inside the code, but this could lead to issues when multiple components are added and we have to discuss this cases in more details.
Let me know if you need more details on this matter.
Regards,
Stefan
Progress Telerik
This is indeed caused by the internal use of a guid generator function that ensures that every instance of the component is unique.
The approach listed in the Jest documentation is also a good approach and it is actually the one recommended by them in this cases:
https://github.com/facebook/jest/blob/master/docs/SnapshotTesting.md#property-matchers
We may consider removing the source of randomness directly inside the code, but this could lead to issues when multiple components are added and we have to discuss this cases in more details.
Let me know if you need more details on this matter.
Regards,
Stefan
Progress Telerik
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answered on 24 Oct 2018, 01:35 PM
Thanks, I'll give that approach a try.