[Postman] The Easiest and Most Popular automated tests in Postman

Postman have a nice feature that allows us to write tests in the tests section, Which helps us in automating most of our manual tasks.

You can simply add these tests by just going to the tests section and click on any test in the right menu.

In this article we will discuss some of these tests in this section.

Lets start by:

1- Automatically check that the status code is 200/201/400 .. etc

By clicking on the selected red snippet, it will add our first test

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

In this case it will pass if you send the request and the response status code is 200, otherwise it will fails.?

you can modify the 200 to be 201,400,404 --> Depends on your test case.

2- Check on a specific header in the response?

By clicking on the selected red snippet, it will add our second test

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

In this case it will pass if you send the request and the response header have "Content-Type" Header

you can change to be any other header

3- Check that the response time is bigger/smaller than a certain time

By clicking on the selected red snippet, it will add our third test

pm.test("Response time is less than 200ms", function () {
    pm.expect(pm.response.responseTime).to.be.below(200);
});        

In this case it will pass if you send the request and the response time is less than 200ms

you can change the margin for the response time based on your test.

4- Check that the response contains a specific string

By clicking on the selected red snippet, it will add our fourth test

pm.test("Body matches string", function () {
    pm.expect(pm.response.text()).to.include("createdAt");
});        

In this case it will pass if you send the request and the response body contains the word "CreatedAt"

5- Check that the response totally equal to a specific string

By clicking on the selected red snippet, it will add our fifth test

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

In this case it will pass if you send the request and the response body totally equal to the word "CreatedAt"

6- Check that the JSON Response has a correct value for a specific key.

By clicking on the selected red snippet, it will add our sixth test

pm.test("Your test name", function () {
    var jsonData = pm.response.json();
    pm.expect(jsonData.job).to.eql("leader");
});        

In this case it will pass if you send the request and the response body was JSON and has a key named "Job" that has the value "Leader"

-------------------------------------------------------------------------------------------

So now we can add automated tests for all our APIs to ensure that our responses are correct and met the desired results.

Simple note: Postman allows you to add any number of tests for each API.

I hope that this was clear and will help you in your work.

Thanks for reading.