Sample
expect.arrayContaining verifies subset membership without enforcing element multiplicity or array ordering
sha256:fbca1677d18965f8a37454024622c618b1066169d084e4d0cbfb48af643a6ca4
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
node linux 24 · ubuntu · glibc 2.39 x64 node npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-27 |
Case
HOW- Goal
- expect.arrayContaining verifies subset membership without enforcing element multiplicity or array ordering
- Packages
- Symbols
-
- expect.arrayContaining
- Environment
- node
- Created
- 2026-08-27T22:10:08Z
Contract
- expect.arrayContaining passes when received contains all elements from the expected array regardless of element order.
- expect.arrayContaining passes when expected contains duplicate elements even if received only contains a single occurrence of that element.
- expect.arrayContaining throws an assertion error when received array lacks one or more elements specified in expected.
- expect.not.arrayContaining passes when received does not contain the full subset of expected elements.
- Passing an empty array to expect.arrayContaining matches any received array.
- Non-array received values fail to match expect.arrayContaining even if array-like or iterable.
- Nested asymmetric matchers like expect.objectContaining inside expect.arrayContaining successfully match array elements.
Files
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous