wu-sheng commented on issue #12253:
URL: https://github.com/apache/skywalking/issues/12253#issuecomment-4240111027
The `noDuplicates` pipe function has been implemented in
apache/skywalking-infra-e2e#145.
It can be used with `contains`, `containsOnce`, or `range` via standard Go
template pipe syntax:
```yaml
{{- contains (.metrics | noDuplicates) }}
- name: {{ notEmpty .name }}
value: {{ notEmpty .value }}
{{- end }}
```
When the actual data contains duplicate entries (full deep equality),
verification will fail with an error indicating the duplicated item.
This PR also builds on top of two earlier fixes:
- apache/skywalking-infra-e2e#143 — fixed `contains` to enforce distinct
matching (each actual item can only satisfy one expected entry), and added
`containsOnce` with backtracking for optimal assignment.
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