assert

Checks record-count and field-existence conditions. The pipeline fails if any assertion is not met.

Supported formats: json jsonl csv

Options

At least one option is required.

Option	Type	Description
`min-records`	integer	Payload must have at least this many records. Must be ≥ 0.
`max-records`	integer	Payload must have at most this many records. Must be ≥ 0.
`records-equal`	integer	Payload must have exactly this many records. Must be ≥ 0.
`field-exists`	string	The named field must exist in the payload.

Assert a minimum and maximum:

yaml

- assert:
    min-records: 1
    max-records: 10000

Assert an exact count:

yaml

- assert:
    records-equal: 5

Assert a field exists:

yaml

- assert:
    field-exists: email

Combined:

yaml

- assert:
    min-records: 10
    max-records: 1000
    field-exists: email

min-records must be ≤ max-records when both are set.
records-equal must fit within the min-records / max-records bounds when they are also set.
For CSV, field-exists checks the header row.
For JSON and JSONL, field-exists passes if any record contains the field.