Skip to Content
TransformationsTesting

Testing Transformations

In the Portal

The transformation editor includes a test panel:

  1. Write your transformation code
  2. Paste or select sample input data
  3. Click Test
  4. See the transformed output and any logged messages

Via the API

Test a transformation without saving:

POST /api/transformations/test
Content-Type: application/json
 
{
  "code": "function transform(record) { return { ...record, tags: [...(record.tags || []), 'tested'] }; }",
  "input": {
    "orderNumber": "1234",
    "totalPrice": 99.99,
    "tags": ["web"]
  }
}

Returns:

{
  "data": {
    "output": {
      "orderNumber": "1234",
      "totalPrice": 99.99,
      "tags": ["web", "tested"]
    },
    "logs": [],
    "duration": 2
  }
}

Testing Tips

  • Test with edge cases: empty arrays, null fields, missing data
  • Test with real data from your bridges to catch format differences
  • Verify that returning null properly filters records
  • Check that your transformation doesn’t break required fields
WritingAI Agent