// Define the JSON Schema
const customerSchema = {
  "required": ["id"],
  "properties": {
    "id": {
      "type": "integer",
      "minimum": 100,
      "maximum": 1000
    },
    "name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 25
    }
  }
};

// Test whether the response matches the schema
var customer = JSON.parse(responseBody);
tests["Customer is valid"] = tv4.validate(customer, customerSchema);