Postman Test syntax to decode and validate an Application JWT token from Azure AD with Scopes(roles)

postman-oauth-token-decode.js

function jwtDecode(t) {
  let token = {};
  token.raw = t;
  token.header = JSON.parse(atob(t.toString().split('.')[0]));
  token.payload = JSON.parse(atob(t.toString().split('.')[1]));
  return (token);
}

console.log("JWT Decode");
var jwt = jwtDecode(pm.response.json().access_token);
console.log(jwt);

pm.test("Access token to needs to have application roles assigned and granted", function () { 
     pm.expect(jwt.payload.roles).to.not.equal(undefined); 
});

pm.test("Access token must have 1 role", function () { 
     pm.expect(jwt.payload.roles.length).to.equal(1); 
});

pm.test("Access token must have XYZ role", function () { 
     pm.expect(jwt.payload.roles.includes("XYZ")).to.equal(true); 
});

if(jwt.payload.roles !== undefined)
{
    pm.test("Access token - JWT Roles: " + jwt.payload.roles.join(), function(){});
}

No idea where i kludged this together from but it took me some time to get the postman js library references right ... make sure to open the console in postman to see the full JWT!