chore: convert bdd tests to e2e tests

[smilkuri]

Issue

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Description

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Testing

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Additional context

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Checklist

• [ ] If the PR is a feature, add integration tests (*.integ.spec.ts).
• [ ] If you wrote E2E tests, are they resilient to concurrent I/O?
• [ ] If adding new public functions, did you add the @public tag and enable doc generation on the package?

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