How to validate dynamic API response (Schema validation) in Postman - arrays

Question

Hello there I have a API that sends dynamic responses and I want to validate the schema of that response.following is the response I am trying to validate.
{
"Data": [
{
"CustomerName": "BeautyProductions",
"Websites": {
"storeone": {
"Keyone":"testvalueone",
"Keytwo":"testvalue two"
}
}
}
]
}
But the thing is the number of websites increases sometimes like following
{
"Data": [
{
"CustomerName": "BeautyProductions",
"Websites": {
"storeone": {
"Keyone":"testvalueone",
"Keytwo":"testvalue two"
},
"storetwo": {
"Keyone":"testvaluestoretwo",
"Keytwo":"testvaluestoretwonow"
}
}
}
]
}
I tried to validate schema as following
var schema = {
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"Data": {
"type": "array",
"items": [
{
"type": "object",
"properties": {
"CustomerName": {
"type": "string"
},
"Websites": {
"type": "object",
"properties": {
"storeone": {
"type": "object",
"properties": {
"Keyone": {
"type": "string"
},
"Keytwo": {
"type": "string"
}
},
"required": [
"Keyone",
"Keytwo"
]
}
},
"required": [
"storeone"
]
}
},
"required": [
"CustomerName",
"Websites"
]
}
]
}
},
"required": [
"Data"
]
}
var json = pm.response.json()
pm.test('shcema is valid', function(){
pm.expect(tv4.validate(json, schema)).to.be.true;
})
But it fails when the number of website count is increasing. SO, I would liketo know how I can validate this?
Thankyou

Answer 1

I don't know if the "stored" field is required, but you can use the "additionalProperties". The "additionalProperties" field allows you to specify a schema for properties in the object that are not explicitly defined in the properties field.
Please try below schema if it works:
var schema = {
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"Data": {
"type": "array",
"items": [
{
"type": "object",
"properties": {
"CustomerName": {
"type": "string"
},
"Websites": {
"type": "object",
"additionalProperties": {
"type": "object",
"properties": {
"Keyone": {
"type": "string"
},
"Keytwo": {
"type": "string"
}
},
"required": [
"Keyone",
"Keytwo"
]
}
}
},
"required": [
"CustomerName",
"Websites"
]
}
]
}
},
"required": [
"Data"
]
}