How to extract the Response of a RestAssured Call in Java to a class when the fields are wrapped in an object

Question

I am using Rest Assured (Java) for API Testing an API. For a specific object, I created a class, lets name it "TestObject", which I pass on to POST Requests to create that object in the api. Now I want to use the GET Route to extract the object into another TestObject class for checks and further uses.

The problem: The Fields of my TestObject that I want to save are wrapped in a "content" object in the response JSON.

 "Content": {
        "CreatedAt": "2021-07-12T10:02:08.523Z",
        "UpdatedAt": "2021-07-12T10:02:08.523Z",
        "UUID": "5ba98999-f6a4-4ec1-8418-ed61022b5975"
 }

How can I extract and save the "Content" Object into my TestObject Class?

There is a method in RestAssured that directly extracts the Response to a class, but it then tries to save the Content directly as a variable, which I dont want.

Answer 1

Maybe you can use something like this by mapping to response directly to your pojo instead of mapping it to the RestAssured's Response:

Create a POJO named TestObject

public class TestObject {

    private ContentObject Content;

    public ContentObject getContent() {
        return Content;
    }

    @Override
    public String toString() {
        return "TestObject{" +
                "Content=" + Content +
                '}';
    }

    public static class ContentObject {
        private String CreatedAt;
        private String UpdatedAt;
        private String UUID;

        public String getCreatedAt() {
            return CreatedAt;
        }

        public String getUpdatedAt() {
            return UpdatedAt;
        }

        public String getUUID() {
            return UUID;
        }

        @Override
        public String toString() {
            return "ContentObject{" +
                    "CreatedAt='" + CreatedAt + '\'' +
                    ", UpdatedAt='" + UpdatedAt + '\'' +
                    ", UUID='" + UUID + '\'' +
                    '}';
        }
    }
}

Then you can use this like:

TestObject testObject = when().get("/your/endpoint").then().extract().as(TestObject.class);
System.out.println(testObject);
System.out.println(testObject.getContent());