An example of heavily automated, optimized, effective Postman Collection level post-response script

postman-collection-level-optimised-post-response-script.js

let currentLocation = pm.collectionVariables.get('computed_current_location');


pm.test(`Successful 2xx request for ${currentLocation}`, () => {
    pm.expect(pm.response.code).to.be.oneOf([200, 201, 202, 203, 204, 205, 206, 207, 208, 226]);
});
let method = pm.request.method;

if (['POST', 'PATCH', 'PUT'].includes(method)) {
    pm.test("Content-Type is present for ${currentLocation}", () => {
        pm.response.to.have.header("Content-Type");
    });
}
if (['GET', 'POST', 'PATCH', 'PUT'].includes(method)) {
    pm.test(`Check response format for ${currentLocation}`, () => {
        const jsonData = pm.response.json();
        pm.expect(pm.response.headers.get('Content-Type')).to.include('application/vnd.api+json');

        pm.expect(jsonData).to.be.an('object');
    });
}

if (method === 'POST') {
    let jsonData = pm.response.json();
    let resourceName = currentLocation;
    let computedIdName = `last_created_${resourceName}_id`;

    pm.test(`Save last created  id for future requests for ${currentLocation}`, () => {

        let last_created_id = jsonData?.data?.id || jsonData?.data[Math.max(0,jsonData.length - 1)]?.id;
        if (last_created_id == null) {
            pm.expect.fail(`Because ${computedIdName} is empty`);
        }

        pm.collectionVariables.set(`${computedIdName}`, last_created_id);
    });
}