Improve tests

[Uzlopak]

needs #700

[github-actions[bot]]

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[Uzlopak]

@gr2m @wolfy1339

ready for review ;)

[wolfy1339]

Can you explain what this PR does? How is it improving tests?

[Uzlopak]

It uses tests, which use the native fetch implementation, thus avoiding that our tests are pure mocks and giving use confidence, that native fetch really works with our implementation.I could actually implement it differently and we could test e.g. node-fetch@v2 too.

[gr2m]

we could test e.g. node-fetch@v2 too

let's not do that 😅

[Uzlopak]

@gr2m

Done :)

[github-actions[bot]]

:tada: This issue has been resolved in version 9.1.2 :tada:

The release is available on:

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

Your semantic-release bot :package::rocket: