Example created for Intro to Regression Testing with Postman (https://www.prostdev.com/post/intro-to-regression-testing-with-postman)

example-Slack-API-basic-tests.js

var jsonData = pm.response.json();

pm.test("Content-Type is present", function () { 
    pm.response.to.have.header("Content-Type");
});

pm.test("Content-Type is application/json", function () { 
    pm.expect(postman.getResponseHeader("Content-Type")).to.include("application/json");
});

pm.test("Body is present", function () { 
    pm.response.to.have.body();
});

pm.test("Body is a valid json", function () { 
    pm.response.to.be.json;
});

pm.test("ok: true", function () { // #5
    pm.expect(jsonData.ok).to.eql(true);
});

pm.test("team.name: ProstDev", function () { // #6
    pm.expect(jsonData.team.name).to.eql("ProstDev");
});

pm.test("Status code is 200", function () { // #7
    pm.response.to.have.status(200);
});