Postman: Performance Test

postman-performance-test.js

pm.test("Successful request", function () {
	pm.expect(pm.response.code).to.be.oneOf([200, 201, 202]);
});

pm.test("Response time is less than 217ms.", function () {
	pm.expect(pm.response.responseTime).to.be.below(217);
});

pm.test("Response time is less than 317ms", function () {
	pm.expect(pm.response.responseTime).to.be.below(317);
});

pm.test("Response time is less than 871ms", function () {
	pm.expect(pm.response.responseTime).to.be.below(871);
});

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

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

pm.test("Body has code", function () {
    pm.expect(pm.response.json()).to.have.property("data");
});

pm.test("Body has message on failure", function () {
    if (!pm.response.code.toString().startsWith('2')) {
        pm.expect(pm.response.json()).to.have.property('message');
        pm.expect(pm.response.json().message).to.be.a('string');
    }
});

Source: Postman answers - Scripts