feat: evict durable objects with test harness

[edmundhung]

Fixes n/a.

This PR adds Durable Object eviction support to createTestHarness

Integration tests can now gracefully evict a currently-running Durable Object by binding name and object name or ID to verify how a Durable Object recovers after its instance is torn down:

const worker = server.getWorker();
await worker.evictDurableObject("COUNTER", { name: "user-123" });

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: It will be included with the rest of the test harness docs

A picture of a cute animal (not mandatory, but encouraged)

[changeset-bot]

🦋 Changeset detected

Latest commit: b3aa1af

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 7 packages

Name	Type
miniflare	Minor
wrangler	Minor
@cloudflare/deploy-helpers	Patch
@cloudflare/pages-shared	Patch
@cloudflare/runtime-types	Patch
@cloudflare/vite-plugin	Patch
@cloudflare/vitest-pool-workers	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

✅ All changesets look good

[pkg-pr-new]

@cloudflare/autoconfig

npm i https://pkg.pr.new/@cloudflare/autoconfig@14602

create-cloudflare

npm i https://pkg.pr.new/create-cloudflare@14602

@cloudflare/deploy-helpers

npm i https://pkg.pr.new/@cloudflare/deploy-helpers@14602

@cloudflare/kv-asset-handler

npm i https://pkg.pr.new/@cloudflare/kv-asset-handler@14602

miniflare

npm i https://pkg.pr.new/miniflare@14602

@cloudflare/pages-shared

npm i https://pkg.pr.new/@cloudflare/pages-shared@14602

@cloudflare/unenv-preset

npm i https://pkg.pr.new/@cloudflare/unenv-preset@14602

@cloudflare/vite-plugin

npm i https://pkg.pr.new/@cloudflare/vite-plugin@14602

@cloudflare/vitest-pool-workers

npm i https://pkg.pr.new/@cloudflare/vitest-pool-workers@14602

@cloudflare/workers-auth

npm i https://pkg.pr.new/@cloudflare/workers-auth@14602

@cloudflare/workers-editor-shared

npm i https://pkg.pr.new/@cloudflare/workers-editor-shared@14602

@cloudflare/workers-utils

npm i https://pkg.pr.new/@cloudflare/workers-utils@14602

wrangler

npm i https://pkg.pr.new/wrangler@14602

commit: b3aa1af

[ask-bonk]

Review posted successfully to PR #14602.

I'm Bonk, and I've done a quick review of your PR.

The PR adds evictDurableObject() to Miniflare and surfaces it through createTestHarness, backed by a new always-on dev-control service that binds every Durable Object namespace.

Key findings I posted:

1. (High) Duplicate binding names crash Miniflare startup for all instances — the dev-control binding list is built from Object.values(worker.do.durableObjects) (keyed by binding name), so two bindings pointing to the same DO class produce the same MINIFLARE_DEV_CONTROL_DO:<script>:<class> binding name twice, which workerd rejects during config validation. Since the service is created unconditionally, this breaks startup for every affected Miniflare instance, not just eviction. Posted a suggestion to de-duplicate.
2. (Low) No runtime guard on the eviction target ({} → idFromName(undefined)).
3. (Low) unsafePreventEviction/remote DOs still get control bindings but won't evict meaningfully.

github run

[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/wrangler

Show detailed file reviewers

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[workers-devprod]

Codeowners reviews satisfied