Files
prysm/testing/endtoend
james-prysm 2e62e9c5e7 adding in mid epoch timeout for e2e head synced evaluator (#16268)
**What type of PR is this?**

tests

**What does this PR do? Why is it needed?**

reduce e2e flakes by adding a mid epoch check for headslot sync

**Which issues(s) does this PR fix?**

Fixes #

**Other notes for review**

**Acknowledgements**

- [x] I have read
[CONTRIBUTING.md](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md).
- [x] I have included a uniquely named [changelog fragment
file](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md#maintaining-changelogmd).
- [x] I have added a description with sufficient context for reviewers
to understand this PR.
- [x] I have tested that my changes work as expected and I added a
testing plan to the PR description (if applicable).
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End-to-end Testing Package

This is the main project folder of the end-to-end testing suite for Prysm. This performs a full end-to-end test for Prysm, including spinning up an ETH1 dev chain, sending deposits to the deposit contract, and making sure the beacon node and its validators are running and performing properly for a few epochs. It also performs a test on a syncing node, and supports feature flags to allow easy E2E testing of experimental features.

How it works

Please see our docs page, https://docs.prylabs.network/docs/devtools/end-to-end, to read more about the feature.