chore: Add mockserver for e2e testing

[mutdmour]

Summary

Add mockserver for e2e testing

Related Linear tickets, Github issues, and Community forum posts

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

[mutdmour]

@shortstacked working on bringing this back this week.
This works well when running test:standard
Still not working:

• proxying https requests
• test:local is not working. throws error where n8nContainer is null when defining proxyServer

Would love your help to figure these out if you can

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[mutdmour]

@shortstacked this is now ready for review.
I have addressed the issues mentioned above. Thanks for the help there.

[cubic-dev-ai]

9 issues found across 12 files

_{React with 👍 or 👎 to teach cubic. You can also tag @cubic-dev-ai to give feedback, ask questions, or re-run the review.}

[shortstacked]

Few small comments, but looks great! Thanks for adding this.

[currents-bot]

✅

E2E Tests: n8n tests passed after 5m 24.8s

🟢 550 · 🔴 0 · ⚪️ 2

View Run Details

Run Details

• Project: n8n

• Groups: 2

• Framework: Playwright

• Run Status: Passed

• Commit: 10c2784

• Spec files: 112

• Overall tests: 552

• Duration: 5m 24.8s

• Parallelization: 3

Groups

GroupId	Results	Spec Files Progress
ui	🟢 158 · 🔴 0 · ⚪️ 2	40 / 40
No name	🟢 392 · 🔴 0 · ⚪️ 0	72 / 72

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[mutdmour]

Thanks @shortstacked I have addressed all the feedback so far. Let me know if there's anything else.