Karate For loop to get ids based on pattern and then use a delete feature - karate

Question

I have response from an API call that gives me a list of devices each with an id. Some of these devices are test devices with the id starting with the prefix 'Test' Example Test319244.
I wish to only retrieve those ids with the prefix 'Test', may be in an array and be able to pass them to another feature file which takes the device ID as the parameter to delete it. Basically I want to delete all the testdevices.
Here is the sample response that contains all the device IDs
{
"items": [
{
"deviceId": "004401784033074000",
"deviceType": "AVMAP_TMR",
"disabled": false,
"metadata": {
"createdAt": "2020-07-20T00:00:00.000+00:00",
"modifiedAt": "2020-07-20T00:00:00.000+00:00"
}
},
{
"deviceId": "Test319246",
"deviceType": "AVMAP_TMR",
"disabled": false,
"metadata": {
"createdAt": "2020-07-21T00:00:00.000+00:00",
"modifiedAt": "2020-07-21T00:00:00.000+00:00"
}
},
{
"deviceId": "Test319245",
"deviceType": "AVMAP_TMR",
"disabled": false,
"metadata": {
"createdAt": "2020-07-21T00:00:00.000+00:00",
"modifiedAt": "2020-07-21T00:00:00.000+00:00"
}
},
{
"deviceId": "Test319244",
"deviceType": "AVMAP_TMR",
"disabled": false,
"metadata": {
"createdAt": "2020-07-21T00:00:00.000+00:00",
"modifiedAt": "2020-07-21T00:00:00.000+00:00"
}
},
{
"deviceId": "command-service",
"deviceType": "service",
"disabled": false,
"metadata": {
"createdAt": "2020-07-20T00:00:00.000+00:00",
"modifiedAt": "2020-07-20T00:00:00.000+00:00"
}
},
{
"deviceId": "kafka-connect-all",
"deviceType": "kafka-connect",
"disabled": false,
"metadata": {
"createdAt": "2020-07-20T00:00:00.000+00:00",
"modifiedAt": "2020-07-20T00:00:00.000+00:00"
}
}
],
"metadata": {
"pagination": {
"limit": 50,
"offset": 0,
"previousOffset": 0,
"nextOffset": 0,
"totalCount": 15
},
"sortedBy": [
{
"field": "deviceId",
"order": "ASC"
}
]
}
}
Here in the above example I only want to delete the devices with ids - Test319244,Test319245 and Test319246
How can I get an array of ids based on the pattern(Testxxxxxx) and pass that on to another feature file
I need help to define an array of ids like:
* def ids = extract the ids based on the pattern
# pass the ids to the delete feature which would send the id one at a time and delete the device.
* def delete = call(delete.feature) ids
This is how the delete scenario feature file looks:
Scenario: Delete Device
# device_registry_url defined in karate-config.js
Given url device_registry_url
And path '/device/'+DeviceID
And header Authorization = authheader
And request ''
When method delete
Then status 200
Would this be the right approach or could we do it in a better way? If so, can someone kindly help in how to do it please?

Answer 1

Just use karate.filter() and then you know what to do:
* def fun = function(x){ return x.deviceId.startsWith('Test') }
* def filtered = karate.filter(response.items, fun)
* call read('delete.feature') filtered