Remove dependency on enzyme

[yurishkuro]

Enzyme is not compatible with React 18, so we need to phase it out.

Preferred approach is to migrate to react-testing-library. In some cases we may use a replacement shallow function #1653, but only when absolutely necessary, it's better to move away from snapshot testing.

• https://testing-library.com/docs/react-testing-library/migrate-from-enzyme
• https://medium.com/zipyai/migrating-from-enzyme-to-react-testing-library-b1fb607d81ab

For examples of this being partially done, see merged PRs in this ticket below (e.g. #1659 #1653 #1643).

The scope of this is sizeable, so the recommendation is to limit the changes to specific modules, a couple test files at a time.

Current enzyme references (July 4 2025):

$ grep -rl 'import.*enzyme' packages/jaeger-ui/src
packages/jaeger-ui/src/components/Monitor/ServicesView/index.test.js
packages/jaeger-ui/src/components/QualityMetrics/index.test.js
packages/jaeger-ui/src/components/TraceDiff/TraceDiffHeader/TraceDiffHeader.test.js
packages/jaeger-ui/src/components/TraceDiff/TraceDiff.test.js
packages/jaeger-ui/src/components/TracePage/TraceSpanView/index.test.js
packages/jaeger-ui/src/components/TracePage/index.test.js
packages/jaeger-ui/src/components/TracePage/TracePageHeader/SpanGraph/ViewingLayer.test.js
packages/jaeger-ui/src/components/TracePage/TraceTimelineViewer/VirtualizedTraceView.test.js
packages/jaeger-ui/src/components/SearchTracePage/SearchResults/index.test.js
packages/jaeger-ui/src/components/SearchTracePage/index.test.js
packages/jaeger-ui/src/components/SearchTracePage/SearchForm.test.js

$ grep -rl 'import.*enzyme' packages/jaeger-ui/src | wc -l
      11

[Sangam-ghimire]

I want to work on this @yurishkuro. Can you assign it to me please? Will be a very good start for me

[yurishkuro]

We do not assign issues. There are multiple packages that are affected, don't try to change all in one PR.

[Sangam-ghimire]

@yurishkuro Any previous discussion that I should not miss, execpt the mentioned ones.

[TiwariAbhishek23]

I also want to work on this. There are several test files, so I think we can split the task between us, @Sangam-ghimire. Please let me know if you want to handle all the files alone because if we both work on same files, it will waste time for both of us.
Thanks

[Sangam-ghimire]

Sure @AbhishekTiwari23 that's a great spirit. Let's split and work together. I might need some help too.

[anshgoyalevil]

@Sangam-ghimire @AbhishekTiwari23 Please have a look at the discussion among the PRs: #1659 #1653 #1643
It would help you understand the issue's landscape.

[anikdhabal]

https://testing-library.com/docs/react-testing-library/migrate-from-enzyme
https://medium.com/zipyai/migrating-from-enzyme-to-react-testing-library-b1fb607d81ab
you can refer these @Sangam-ghimire @AbhishekTiwari23

[TiwariAbhishek23]

Thanks, working on it