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Editor: Refactor a few component tests to @testing-library/react #43376

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merged 2 commits into from
Aug 22, 2022

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@tyxla tyxla commented Aug 18, 2022

What?

We've recently started refactoring enzyme tests to @testing-library/react.

This PR refactors a few of the simpler editor component tests from enzyme to @testing-library/react. I've specifically picked the most straightforward ones that boil down to "should render" or "should not render".

Why?

@testing-library/react provides a better way to write tests for accessible components that is closer to the way the user experiences them.

How?

We're straightforwardly replacing enzyme tests with @testing-library/react ones, using jest-dom matches and screen queries.

Testing Instructions

Verify tests pass: npm run test:unit packages/editor/src/components

@tyxla tyxla added [Type] Enhancement A suggestion for improvement. [Package] Editor /packages/editor labels Aug 18, 2022
@tyxla tyxla self-assigned this Aug 18, 2022
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Size Change: +1.33 kB (0%)

Total Size: 1.24 MB

Filename Size Change
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ℹ️ View Unchanged
Filename Size
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@ciampo ciampo left a comment

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LGTM 🚀

Just a nit: when we're asserting for an element to be in the document / visible, we could use getBy... queries instead of queryBy... , since the getBy... explicitly throw when the element is not found.

It wouldn't make a difference in this PR, so it's mostly a convention / stylistic choice — up to you!

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tyxla commented Aug 22, 2022

Just a nit: when we're asserting for an element to be in the document / visible, we could use getBy... queries instead of queryBy... , since the getBy... explicitly throw when the element is not found.

It wouldn't make a difference in this PR, so it's mostly a convention / stylistic choice — up to you!

Updated in 5f4497a, happy to keep things consistent.

I can't stop wondering though, how is that useful, considering that using queryBy() the assertion will fail, and it will be clear that the element is not visible when it should be? To me, the assertion failing could be a better way to indicate what's wrong, rather than RTE throwing an error. I tried to find anything documented about this in the official library docs, but didn't stumble upon anything. Thoughts? cc @mirka as well 😉

@tyxla tyxla merged commit f6201a1 into trunk Aug 22, 2022
@tyxla tyxla deleted the refactor/few-editor-components-rtl branch August 22, 2022 09:32
@github-actions github-actions bot added this to the Gutenberg 14.0 milestone Aug 22, 2022
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mirka commented Aug 22, 2022

I don't feel super strongly about it to be honest, but the general recommendation given by Kent is to only use query* when checking for non-existence, because the error message thrown by a get* is more helpful.

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tyxla commented Aug 22, 2022

I don't feel super strongly about it to be honest, but the general recommendation given by Kent is to only use query* when checking for non-existence, because the error message thrown by a get* is more helpful.

Ah, I was looking for that, thanks @mirka 🙌

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