Sure, it is potential to validate simply the construction of a response towards a schema in Karate with out validating the information values.
Karate DSL is designed to be versatile sufficient to permit for schema validation (i.e., construction validation) in addition to precise worth validation. To focus solely on the construction, you possibly can make the most of the match key phrase together with kind assertion markers reminiscent of #notnull, #string, #quantity, and so forth.
These markers validate the presence and kind of a worth with out asserting on the precise information values.
This is a step-by-step information on attaining construction validation:
Outline Your Anticipated Schema: Define the anticipated construction of your API response in a Karate characteristic file. It’s best to use Karate’s particular markers to specify the kind of worth anticipated with out specifying the precise information. For non-obligatory fields, Karate gives ## (e.g., ##string for an non-obligatory string).
Use the match Key phrase: Apply Karate’s match key phrase to validate the response construction towards your schema definition. The match key phrase facilitates the comparability of the particular API response together with your schema expectations.
Make use of Karate’s Sort Assertion Markers: Whereas defining your schema, use Karate’s kind assertion markers to make sure the fields are of the right kind. A few of these markers embody:
#string to point a string worth
#quantity for quantity values
#boolean for boolean values
#array for arrays
#object for JSON objects
#notnull to easily assert the sector will not be null, no matter its precise worth or kind
Situation: Validate API response construction
* def expectedSchema =
"""
{
"id": "#quantity",
"identify": "#string",
"isActive": "#boolean",
"scores": "#array",
"particulars": {
"deal with": "#string",
"cellphone": "##string" // Non-obligatory discipline
}
}
"""
* url 'http://instance.com/api/information'
* technique GET
* standing 200
* match response == expectedSchema
Within the above instance, expectedSchema describes the anticipated construction of the API response. The main target will not be on the precise values of fields like id, identify, isActive, and so forth., however quite on making certain they’re current and of the right kind within the response. The # prefix is used to indicate the anticipated kind of every worth, whereas ## is used for non-obligatory fields.
By following this strategy, you possibly can guarantee your API responses match the anticipated construction with out tightly coupling your exams to particular information values, thus making your exams extra adaptable and resilient to information modifications in your API.
