Support clipboardData like dataTransfer.

[calebmer]

To support the paste event you need the clipboardData key (which jsdom ignores). This commit extends how DOM testing library supports dataTransfer for the drop event to clipboardData.

This allows us to write tests for pasting.

Checklist:

• Documentation added to the docs site (n/a)
• I've prepared a PR for types targeting DefinitelyTyped (n/a)
• Tests (edit made via GitHub, let’s see what CI says)
• Ready to be merged

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@32dd725). Click here to learn what that means.
The diff coverage is 100.00%.

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  Hits              ?       559           
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Impacted Files	Coverage Δ
src/events.js	100.00% <100.00%> (ø)
src/query-helpers.js	100.00% <0.00%> (ø)
src/pretty-dom.js	100.00% <0.00%> (ø)
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[kentcdodds]

Thanks for this! I think I'd like to have a test for this use case specifically. Could you add one please?

[nickmccurdy]

I've added a basic test asserting that a POJO similar to DataTransfer can be passed to the clipboardData property of the ClipboardEvent.

Eventually as we add paste support to userEvent and merge that into this package, we can use a more realistic mock of DataTransfer. Also if anyone is interested, I made a Paste event playboard to study the DataTransfer API and make sure the test is accurate.

[kentcdodds]

Super! Thank you!

[kentcdodds]

@all-contributors please add @calebmer for code

[allcontributors]

@kentcdodds

I've put up a pull request to add @calebmer! 🎉

[kentcdodds]

@all-contributors please add @nickmccurdy for tests

[allcontributors]

@kentcdodds

I've put up a pull request to add @nickmccurdy! 🎉

[kentcdodds]

🎉 This PR is included in version 7.13.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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