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Postman: How to dynamically validate JSON value without using a switch statement

I want to dynamically validate the value of JSON request parameters without the use of switch statement

I tried the code below which works fine but it is not optimized as I have to create a case for each field I am validating.

If there a way to achieve the same result without using switch statement

if(responsecode == 200){
const cfields = ["author", "title", "genre", "price"];

cfields.forEach(myFunction);

function myFunction(item) {
    var reqprop = item;

pm.test("Verify that "+reqprop+" is not empty", function () {
    switch(reqprop) {
  case'author':
  pm.expect(requestObjectprop.author, "Request is successful with a null '"+reqprop+"' ").and.not.be.empty;
    //pm.expect(contentValue).to.be.a('string').and.not.be.empty
    break;
  case 'title':
    pm.expect(requestObjectprop.title, "Request is successful with a null '"+reqprop+"' ").and.not.be.empty;
    break;
}
   
});
}
}

Thank you

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