What is Postman and why everyone use it ?

Summary

In this video, the speaker, Hes, enlightens viewers on the true capabilities of Postman, far beyond its common perception as a simple API testing tool. Hes dispels the myth that Postman is merely for sending web requests and receiving responses, emphasizing its status as an industry standard among developers. The tutorial delves into Postman's advanced features, including writing code for workflow automation, using variables, and generating tests. Hes guides viewers through practical examples, such as creating collections, setting up pre-request scripts, and leveraging Postman's environment and documentation. The video is a call to action for developers to harness Postman's full potential, promising to reveal the 'monster' capabilities hidden within this free tool.

Takeaways

• 🔧 Postman is a powerful API development tool that goes beyond just sending web requests and receiving responses.
• 👨‍💻 It is considered the industry standard and is widely used by over 30 million developers, including both back-end and front-end developers.
• 🚀 Postman started as a simple tool but has evolved to include features that allow for automation and scripting within the tool itself.
• 💼 Postman is free for individual users, with paid plans geared towards enterprise users.
• 📚 The script mentions the importance of understanding Postman's full capabilities, which are often underestimated by many users.
• 🛠️ Postman allows users to write code to automate workflows, making it a versatile tool for developers.
• 🔗 The video script demonstrates how to use Postman for API testing, including creating and managing collections and requests.
• 🔄 Postman supports various types of requests beyond HTTP, such as GraphQL, gRPC, WebSocket, and Socket.IO.
• 📝 The script showcases how to use variables and pre-request scripts in Postman to dynamically generate data for testing.
• 🔍 Postman provides a console for monitoring the traffic of requests and responses, which is useful for debugging and understanding API behavior.
• 📈 The video emphasizes the learning potential of Postman, pointing to its Learning Center and documentation as resources for users to deepen their knowledge.

Q & A

What is Postman and why is it considered an industry standard by many developers?

Postman is a collaboration platform for API development that allows for sending web requests and receiving responses, but it is much more than a simple tool. It offers features like automation, workflow enhancement, and the ability to write code within the platform. It's considered an industry standard because of its extensive capabilities and widespread adoption by over 30 million developers, including both back end and front end developers.

How did Postman originate and what was the motivation behind its creation?

Postman was created out of frustration with the limitations of using web browsers and browser plugins for API development. The founders decided to launch Postman as a standalone tool to overcome these limitations, leading to its continuous development and evolution into a comprehensive API development platform.

What are some of the advanced features of Postman that go beyond just sending web requests?

Postman's advanced features include the ability to write code for automation within the platform, the creation of collections to organize and manage API requests, the use of variables to streamline requests, and the generation of documentation. It also supports different types of requests beyond HTTP, such as GraphQL, gRPC, WebSocket, and Socket.IO.

How does Postman handle authentication and how can it be used to automate API testing?

Postman can handle authentication by allowing users to include authentication details in their requests. It can automate API testing through the use of variables, pre-request scripts, and tests that can be written to check the validity of responses and data, making it a powerful tool for developers to ensure API reliability and functionality.

What is the significance of Postman's variable system and how does it aid in API development?

Postman's variable system is significant because it allows for dynamic and reusable components in API requests. Developers can set variables for parts of the request that remain constant, like base URLs, or that need to change, like user IDs or passwords. This makes the API development process more efficient and less error-prone.

How can Postman be used to generate random data for testing purposes?

Postman can generate random data through its dynamic variables feature. Users can create variables that produce random strings, numbers, or even emails, which is particularly useful for testing APIs under various scenarios without manually changing data each time.

What is the role of the Postman Console and how does it assist in debugging API requests?

The Postman Console provides a view of all the traffic going in and out of Postman, including request headers, request bodies, and response data. It assists in debugging by allowing developers to inspect the details of each request and response, which is crucial for identifying and fixing issues in API interactions.

How does Postman facilitate collaboration among development teams?

Postman facilitates collaboration by allowing teams to share collections, which are sets of API requests. This enables multiple developers to work on the same set of APIs, see each other's changes, and maintain consistency across the team's API development efforts.

What are some of the learning resources available for developers to enhance their Postman skills?

Postman offers a Learning Center that includes tutorials, documentation, and examples to help developers improve their skills. It also has a community forum similar to Stack Overflow where users can ask questions and find solutions to common problems, making it a valuable resource for continuous learning and improvement.

How can Postman be integrated into a developer's workflow to improve efficiency?

Postman can be integrated into a developer's workflow by using it for all stages of API development, from initial request drafting to final testing and documentation. By using features like collections, variables, and tests, developers can streamline their processes, automate repetitive tasks, and ensure consistent and reliable API performance.

Outlines

00:00

🔧 Introduction to Postman's True Power

The speaker, Hes, introduces the video by explaining that Postman is not merely a tool for sending web requests and receiving responses; it's an industry standard utilized by over 30 million developers worldwide. Hes aims to dispel the misconception that Postman is simple and instead reveal its full potential. The history of Postman is briefly touched upon, highlighting its evolution from a basic request tool to a sophisticated development asset. The speaker also mentions the ability to write code within Postman to automate workflows and refers to Postman's extensive documentation as a learning resource. The video promises to delve into Postman's capabilities beyond simple web requests.

05:01

🌐 Exploring Postman's Interface and Web Requests

Hes demonstrates how to use Postman's interface, starting with creating an account and navigating the dashboard. He discusses the importance of collections in organizing web requests and shows how to create a new collection and add requests to it. The video also covers setting variables within Postman to streamline requests, using the 'Set as Variable' feature to simplify repetitive tasks. Hes emphasizes Postman's ability to handle various types of requests beyond HTTP, such as GraphQL, gRPC, and WebSocket. The speaker also introduces the concept of using Postman's console to monitor traffic and inspect responses, setting the stage for more advanced topics.

10:02

🔄 Postman's Automation and Dynamic Data

The video segment shows how to automate testing with dynamic data in Postman. Hes explains the process of registering a user through Postman, using variables to generate random data like email addresses and passwords. The speaker encounters an issue with role validation and decides to resolve it by writing a pre-request script to randomly select a valid user role. Hes demonstrates how to use Postman's scripting capabilities to interact with environment variables and customize request data dynamically, showcasing Postman's flexibility in testing scenarios.

15:05

💻 Debugging and Scripting in Postman

Hes encounters a problem with the random username generation and decides to debug it by writing a pre-request script to create valid usernames. The speaker walks through the script, explaining how to loop through letters and randomly select characters to form a username. Hes also shows how to check the response in the console and adjust the script accordingly. The video segment highlights the importance of debugging and the power of Postman's scripting for automating and personalizing API testing.

20:07

🔗 Testing and Integration in Postman

In this part, Hes focuses on testing the registration API effectively by automating the process in Postman. The speaker shows how to extract data from responses for future use, such as logging in, and how to save and reuse variables for consistent testing. Hes also introduces the concept of generating tests in Postman, which automates the process of verifying responses and checking for expected fields. The video segment emphasizes the integration of testing within the development workflow and how Postman streamlines this process.

25:08

📚 Postman Learning Center and Community

Hes concludes the video by encouraging viewers to explore the Postman Learning Center for further insights into Postman's capabilities. The speaker mentions the availability of documentation, scripting guides, and community forums as resources for learning and problem-solving. Hes reflects on the video's aim to change the perception of Postman from a simple tool to a powerful development asset. The call to action for feedback and further exploration of Postman's features wraps up the tutorial.

Keywords

💡Postman

Postman is an API platform for building and using APIs. It is not merely a tool for sending web requests and receiving responses, as many might initially assume. In the video, the speaker clarifies that Postman's capabilities extend far beyond this basic function, positioning it as an industry standard for developers. Postman allows for the creation of collections of API requests, the use of variables to streamline workflows, and the integration of scripts for automation, showcasing its comprehensive role in API development and testing.

💡API

An API, or Application Programming Interface, is a set of rules and protocols for building and interacting with software applications. In the context of the video, APIs are the focus of testing and development using Postman. The video discusses how Postman can be used to send requests to APIs to check their functionality, emphasizing the importance of APIs in both back-end and front-end development.

💡Collection

In Postman, a 'Collection' is a group of related API requests that can be organized and run together. The video script mentions creating a collection as a way to manage and reuse API requests efficiently. This feature is highlighted as part of Postman's ability to streamline the API development process by allowing developers to group and execute multiple requests with ease.

💡Variable

Variables in Postman are used to store values that can be reused across API requests, making it easier to manage dynamic data. The script explains how to set a variable within a collection, which can be used to avoid hardcoding repetitive data like server URLs. This feature is showcased as a way to enhance productivity and maintain flexibility in API testing.

💡Environment

An 'Environment' in Postman refers to a set of variables that can be used across different collections or requests. The video discusses the concept of environments and how they can be used to switch between different API endpoints or configurations, such as development, testing, and production environments. This feature is emphasized as a powerful tool for managing different states and configurations in API development.

💡Scripting

Postman supports scripting within requests, allowing for automation and dynamic data manipulation. The video script includes a demonstration of writing pre-request and test scripts, which can be used to generate random data, set up test conditions, and automate testing processes. Scripting in Postman is portrayed as a way to enhance the testing capabilities and customize the API development workflow.

💡Documentation

Documentation in the context of the video refers to the detailed information and guidelines provided by Postman for its users. The speaker mentions that Postman's documentation is a valuable resource for learning more about the platform's features and capabilities. Documentation is highlighted as a key aspect of Postman's user support, enabling developers to maximize the tool's potential.

💡Testing

Testing in Postman is a core theme of the video, where the speaker discusses how Postman can be used to test APIs by sending requests and evaluating responses. The video illustrates the use of Postman's features like variables, scripting, and collections to automate and manage the testing process, emphasizing the importance of thorough testing in API development.

💡Automation

Automation in Postman is the process of using scripts and collections to perform repetitive tasks without manual intervention. The video script includes examples of automating API testing by generating random data, setting up test scripts, and running collections of requests. Automation is presented as a way to save time, reduce errors, and increase efficiency in the API development lifecycle.

💡Workflow

Workflow in Postman refers to the sequence of steps and processes that developers follow when building and testing APIs. The video script explains how Postman can be integrated into a developer's workflow to improve efficiency and organization. By using features like collections, environments, and scripting, developers can create a structured and repeatable process for API development.

💡Learning Center

The Postman Learning Center is a resource mentioned in the video, which provides tutorials, documentation, and community support for users to enhance their Postman skills. The video encourages viewers to explore the Learning Center to unlock the full potential of Postman, indicating that it is a valuable platform for continuous learning and improvement in API development.

Highlights

Postman is not just a tool for sending web requests and getting responses; it has much more functionality.

Postman is considered the industry standard by many developers for API testing and development.

Over 30 million developers use Postman, indicating its widespread adoption and utility.

Postman allows users to write code to automate workflows, enhancing its utility beyond simple API testing.

Postman is free for individual users, with paid plans aimed at enterprises.

The presenter demonstrates how to make a web request using Postman and explains the process in detail.

Variables in Postman can be set at different scopes, such as collection or environment-specific.

Postman's Console provides insights into the traffic of requests and responses, aiding in debugging.

Postman supports various types of requests beyond HTTP, including GraphQL, gRPC, WebSocket, and Socket.IO.

The use of variables and dynamic content in Postman can simulate real-world scenarios for testing.

Pre-request scripts in Postman enable the manipulation of data before a request is sent.

Postman's ability to generate random data, like emails and passwords, is showcased for dynamic testing.

The presenter discusses how to handle errors and invalid responses when testing APIs with Postman.

Postman can automate testing through the use of collection runs and the generation of test scripts.

Postman's Learning Center and documentation are highlighted as valuable resources for users.

The video concludes with a call to action for viewers to explore more of Postman's capabilities.

Transcripts

hey there everyone my name is hes and in

this video we are going to talk about

what is postmen and in case you are

thinking that I know postmen Postman is

just a simple tool through which I can

send the web request get some response

back and just check out whether my API

are working or not no my friend you are

absolutely wrong in that case of course

Postman does exactly that but it's not

just that simple that you can explain

the postman by hey it sends a request

and gets the response this is exactly

the point where a lot of people make

mistake I mean just think for a second

just think for a second and just realize

why everybody on the Internet calls that

Postman is the industry standard for

every developer whether it's a back end

or it's a front end why almost every

developer says that hey my company uses

Postman and if you just look at this on

their website in itself you'll notice

they say that over 30 million developers

use postmen so there might be something

that we are absolutely missing about the

postman than sending just the web

request and this is exactly that video

where you understand that how you can

utilize the postman I'll walk you

through with a small glimpse and hints

of where the power of the postman comes

around and of course we're going to be

going through with the postman this

video will help you to understand what

all and what more you can do with the

postmen and of course we'll answer the

question what is Postman so in the early

days Postman used to be a a very simple

client in which you can just send the

request and get the response back it

used to be done mostly with the web

browsers and some of the plugins of the

browsers which is not a good idea for

working with that so one day the

founders of the postmen got really

frustrated and they said I'm going to be

launching this tool on its own so that

we can make more than making the web

request rest is all history and the

postman was born out of that and through

which postman has seen a constant

development cycle and it is St still not

stopping on that part it is now not just

a request uh mechanism tool it does so

much more and we're going to be seeing a

glimpse of that not only that you can

write code inside the postmen to

automate so much of your workflow in

fact that's just a part of it which I'm

sharing you I'll show you the

documentation of the postman to to share

that what more you can learn directly

from the postman documentation and the

best part of course it's free you you're

already using it I'm just want I'm just

here to make sure that you understand

what power Postman brings to you and why

you are not using it and all the people

who are pro developers experienced

developers they are using it every day

so we're about to here to change this

one and let's go ahead and get started

so let's start with the basic that this

is the postman website and you see that

30 million developers are here and if

you just go ahead and look at their

pricing uh this is the best thing that

everybody can see that hey this is

Basics and all not and whatnot uh but we

all know that postmen is free uh you can

just go ahead and use that these Postman

pricings are for the Enterprise they

don't charge for Indie developers

anything at all although the pricing

page is pretty nice what all we offers

and all of that uh but yeah as a

individual user it it doesn't cost me

any money I just use it and it it

generously offers me anyways we we're

not interested in that part we are more

interested in something more so I have

already created an account and this is

how the postman account looks like by

the way uh if you want to use Postman

without this you can just go ahead and

do that I prefer to have my account

because we use it in and out in all of

our application first uh how can we use

this where can we make the web request I

do have an open source project on this

we're going to utilize this uh but you

can use any of the web request for that

so the project is free api. app and in

this we can just check the project we

will check the project while writing

some of the scripts but all I want to

show you is cooked in docs once you open

the cooked in docs uh this is how you

can make a web request so uh we'll go in

the authentication because that's where

we need to automate some of the stuff

but let's just say right now we'll see

the public apis I want to grab a random

joke book stocks what should I get

random code random code would be really

nice so uh there's random Cotes and

there is a random get one random code so

IID like to make a web request onto this

one I can go ahead and try this out and

I can execute this and I can see that

okay this is the point where the web

request was made although this is very

nicely cooked Docks but not all the

application that you're developing

doesn't have this kind of really nice

cooked in docks you want to just see how

it's going on in the local host and make

a collection of it all right so this is

what I get uh in the response about the

author and all the author Slug and the

content and all of that now the whole

idea is I want to just go ahead and copy

this whole thing and I want to make the

same request with the postman to just

get started and then we are going to

write some scripts automate that to see

the true power of the postman so what

I'll do is I'll just go on and open the

postman this is what we have this is how

it looks like uh maybe you want to log

in not log in that's up to totally your

call now next thing is I want to make a

web request the first thing that you're

going to see is I can just click on the

new and it opens up the web request the

type of web request I can make I can

make an HTTP Tada obvious but we can

also make the graphql grpc websocket

request socket IO whatever you want to

go we can go with that I don't usually

go with this kind of a style because

this is just one off a request let's go

ahead and try that then I'll walk you

through with what I use as a workflow

majorly of the time I can just start a

web request I can just go ahead and say

hey this is my web request go ahead and

make a get request on this one by the

way of course you can use or you can

type the new method as well but I'm

happy with the get I'll just go ahead

and send the web request and that's the

major use case from the majority of

people that this is it maybe I'll just

save it but let me walk you through with

the true power of how the postman

actually goes go ahead and work for it

so what I'll do is I'll just remove this

I don't want to save it majority of the

time I just go ahead and try to create a

collection for this one so I'm going to

go ahead and create a blank collection

but you have a whole lot of templates

that you can use around once you are uh

familiarized with how to utilize Postman

and its true hidden superpowers I'll

start with the basics so I'll just go

ahead and create a b blank collection

and I'm going to name this collection as

a YouTube uh demo Postman YouTube demo

is good enough all right now inside this

YouTube demo collection I can add a web

request but you can also go ahead and

see that there is so much more that you

can go ahead and work with that yes this

is what I really like that how much

superpow is there and how much you can

utilize this so I'll just go ahead and

move this here so that we can see it all

up here so this is what we have now I'll

just go ahead and click and I'll say

that I want to add a request you can add

subfolders into this if there's a need

for this so I'll just let's just add the

folder and in this folder I'm going to

go ahead and call this one as uh public

because that's what we are calling and

inside the public further I want to add

a request by the way you can add outside

as well but I'll add the request here

now in this I would love to make a

request to this one so we see that okay

it works it works really nice but

obviously in the very near future I'll

be making more web requests to this

entire API and that the routes could be

different but I have noticed already

that api. free api. apps / API slv1 this

is going to remain exactly the same so

how we can make this a little bit easier

I can just go ahead and select all of

this and yes it pops up says set as

variable I'm going to go ahead do this

uh I'll set as a new variable I'm going

to call this one as uh my uh server

looks pretty good and further I'll

select the scope so scope is something

that this variable should be available

to all of the collections that I have or

particular collection that I'm asking it

or the active environment I I'll talk

about the environment probably later on

but right now I'll just say in this

collection only this should be available

this is my scope of this variable just

set the variable and that's it now this

is set as variable makes my life a

little bit easier yes still it makes

this it send the web request but makes

my life a little bit easier things are

okay at this point and you say hey I

know this part this is pretty obvious

can you show me something really nice

let me walk you through first of all if

you look at this part here uh this is a

little hard to see but this is here you

can go ahead and see the console that

what requests are going in this is all

the traffic that is going outside of the

postman and all the traffic that's

coming in that's here in the response we

have the cookies we have uh the headers

whatnot and all these things this is

what is coming in now to explore things

in a little bit more and we'll be

writing some code as well uh let me walk

you through that part as well now if I

go back onto this docs we have done with

the public request we are pretty aware

of it we'll close this one not

interested in the public API part I'm

more interested in doing some

authentication while doing the

authentication the first step is

obviously to register a user I go ahead

and uh do this I want to try this out uh

heads up I tried this before making this

video so obviously this test user might

be already registered but we'll see that

I'll go ahead and execute this and this

gives me a response that you know what

the status code and all the thing user

is already registered let's try to

modify this so how can I modify this I

can go ahead and change things here user

email and domain so instead of this

we'll go ahead and say this one is uh

example if I can write that that would

be really

nice there we go uh user. email instead

of that uh let's go ahead and uh call

this one as t t. example uh password is

okay role is admin and we're going to be

changing the username as well to T I'm

pretty sure that's not register although

this is public API and people register

all kind of users but we reset that in

our database uh timely let's go ahead

and try to execute now if I execute this

is the response that I got that hey user

was successfully registered in your

application okay nothing nothing super

uh extreme in that case but let's go

ahead and try let me show you the power

of the postman I'll copy this route and

now let's go ahead and create another

folder where I want to check the O uh

create new folder and add a folder I'll

call this one as o and inside the Au

we'll make a new request obviously this

request is going to be of type uh post

but I don't have to copy the entire URL

because I know that I can just go ahead

and use uh my server this is a variable

and after that I can make uh whatever

the slash request is so in this case it

is just the slash userregister makes

life a little bit

easier I'll go back and I'll just say

hey this is what where I want to send

the request of course this is a post

kind of request if I send the request

just like this it will say hey email is

required email is invalid all those

validation check by the way we'll go

into the code part as well of this open

source repository uh this is really nice

I'm happy with this but this is not the

response I'm looking up forward so I

need to send some data although this

docs really help that I have to send

this kind of a data how can I send this

pretty easy uh you have all these

options to send the body if I check the

body here I have the option to send form

data we have the option of uh URL

encoded forms you have raw data and all

of that by the way with the form data

you can change the type text to file and

can send the files as well uh just the

basics or you can set the binaries send

the files directly I'll show you some

fun stuff around that as well but in

this case I'm more interested in the raw

and there's a lot of data type you can

send I'll just send the Json and this is

how you send the Json request oh this is

fun okay now this is what the example

what we have but this user is already

registered we know that part if I if I

go ahead and send this oh this is

already registered a user with this

email and username already exist ah this

is nice so we have a response which is

already being done now first interesting

part is I can just make a right click or

a click on this one and uh you can do so

much more onto this one that you can

actually save this uh as an example as

well I'll just go ahead and we'll save

it later on but right now I want to

worry something that hey this is not

going to work any given time if I have

to come up here and have to work it like

this this is definitely not going to

work I cannot come up with different

emails every single time I have to check

this one this is the first interesting

stuff comes up in the postman itself you

can just remove this email start your

variable holders placeholders two curly

braces and then you can use a dollar

sign look at the list of it yeah uh you

can just go ahead Postman knows it that

there is so much Randomness that happens

while testing that's why I say this is a

testing first company they knows the

stuff that is being randomly used notice

here pretty much anything that you want

but there are some things which are not

there how can I come up with that that's

where we are going to learn so in this

case I I'm going to go ahead and say I

want a random email this will generate a

random email for me pretty cool okay uh

let's go ahead and see that if it is

able to do this or not uh let's go ahead

and send a post request uh user user

with email or username already exists so

right now user with either email or the

username is already exist but I want to

see this let's see in the console and if

I go ahead and open up the post request

uh notice here the post request I can go

ahead and check all of this request

header I can see the request body as

well and there we go this is my email

which is absolutely random told you it's

it's super fun and you are not utilizing

its true superpow uh let's go ahead and

close this and send one more to just see

this notice here the new one comes

around and at least this part is working

I'll open the request body and I'll say

hey there is this one another Hotmail

user guess Postman loves Hotmail I don't

know okay so one part is solved how can

I grab the password as well can I go

ahead and grab the password just like

this yes you can just do that oops too

many curly braces and I can use a dollar

sign and I can there's so much more into

this one and I can go ahead and use a

random password is there a random role

available as well let's go ahead and try

this obviously Postman doesn't know what

kind of role we are supporting in our

open source project so I'm pretty sure

that doesn't exist random

roll no such thing as random roll if

you'll do this it's it's going to be a

bad request but we need to see those bad

request as well that's the testing send

this open the

console and open this part and what

we're going to do is okay and let me

just go ahead and move this here a

little bit you can see it properly and

here is my response body and in this

invalid user role what you're saying uh

request body here and there we go

password is there random R the variable

was shipping in as it is this is not

good this is not good I want to send

something more uh this is not going to

cut through so there is two challenges

in front of me first of all this random

roll it's not working and the random

username this is not working so what you

can do further in the postmen you can

come up into the

prequest script uh perfect name I don't

need to explain it more all the script

that runs before you send your request

that's it TAA so what I want to do is

let's just say I have a function and

I'll do a deliberate mistake here just

warning you in advance I'll just go

ahead and say get a random rule so I'm

defining my own function here by the way

you can use Arrow functions as well I

like to go with the classic uh I'll go

ahead and say I'll go with the roles and

what roles you have and we are going to

say we do have an admin we do have a

user and probably we do have guest so

these are my roles now I want to select

a random role based on this pretty easy

you can go ahead and find roles and we

can just use whatever the index is B

based on it's a classic JavaScript yes

JavaScript works everywhere almost

everywhere uh we'll just float it out

and then we're going to go ahead and say

math and we are going to use a random

there we go we have randomized the stuff

and we can multiply it by

roll dot length so there we go now it is

governed by the RS length and we will be

able to grab it uh now there are a

couple of uh problems and hints uh that

okay I have defined my function but how

does my body is going to know that hey I

do have these uh new variables available

for me so all you have to do is PM yes

there is a thing known as PM Postman yes

and you can just go ahead and say dot

there is ton of thing that you can do I

bet you didn't know about it so you can

go ahead and set about the cookies

environment

execution honestly I'm not even aware

about all of them I just use few of them

so one thing that I often use is pm. uh

environment yep that's the one and

there's only couple of options that you

use for the environment you either set

it clear it mostly you just set it or

get it I I rarely clear the stuff so the

get one is here uh sometimes I do check

has as well but very rarely we we can

just go ahead and use get so not the get

we want to set the environment first my

bad so what do you want to do is when

you want to set an environment you pass

on what environment variable name should

be and how should I set it uh how it's a

easy part get random role and go ahead

and execute that so that you return a

role and where should I return this role

so simple just go ahead and call this

one as random role now that a new

variable is is available I can just go

ahead and save this the only thing you

have to keep in mind is when you check

the body you cannot now just use the

dollar the dollar sign is reserved for

the postman variable itself this is not

a postman variable this is hes variable

I I designed it anyways I can just go

ahead and say the random role now it is

not going to do our job entirely but

it's it's a one step ahead I'll just

click on Save first then I'll open up

the console I can clear the console and

now let's go ahead and send the request

there we go we have send the request it

doesn't still does the job notice here

it's it's still Falls we'll come up

there I'll just open the postmen I'll

open the request body and I need to

shift this I need to open the request

body and then in the request body notice

here the role name is guest so this is

coming in now this is giving us a

problem but the username is also giving

us the problem so first we'll solve the

username problem and then we'll solve

the rest of the problem so username how

should we get the username now there are

lots of ways on the username of getting

that I'll just grab a username which is

all lowercase so I'll just go ahead and

say

function get a random username just like

that we'll just go ahead and work with

this I can just go ahead and write these

scripts now the first thing that I have

to do is grab all the letters so I'll

just go ahead and grab this now how can

we do this let username equals to just

like that we'll Loop through all the

values I wish there could be some

suggestions there but hey I'm asking too

much so I'll just go ahead and write

this like this for let i h really

boring we start with the zero and then

we go ahead how much long the username

you want I'll just say I want just the

seven letters here and I'm going to go

ahead and say i++ really basic oops so

this is my Loop and in that I'll just go

ahead and say this username needs to

plus equal uh with the letters and the

character at which character I'm going

to be choosing I'll be doing the math

random again can I copy paste this at

least this part I can copy

paste H why not copy and paste this so

we have a mt. floor we have a mt. random

and that's going to get multiplied by

the letters length this time super easy

letters. length not bad all right uh

once this is all done we'll go outside

of the loop and we'll just go ahead and

say I want to return the username hope

that is cooked so now it is pretty sure

that the username will come up uh this

whole thing is pretty nice and easy I'll

just go ahead and get some space for me

I can I duplicate this oh I can use the

keyboard shortcuts oh I didn't knew that

uh we can just go ahead and say get

random username just like that and I'll

just say this one is random username

pretty cool and now in the body this is

not going to still solve the problem

I'll show you some of the open source

hacks as well uh I can just go ahead and

copy this stuff why should I copy

this and I can just go ahead and say

random username these are my variables

uh it's still not going to solve the

problem but that's not the postman

problem this is how we debug the stuff

so I thought I'll include that part as

well I'll open this up and I'll say that

hey let's make a web request let's open

the console clear this up and I'll send

this request so let's see what's

happening in here again move it a little

bit here uh response body and there we

go username is coming in nicely and we

have the password everything is pretty

good this should actually go through

this should go through this didn't got

me the error this should go through ah

this this this goes through uh let's

let's try it one more time oh there we

go invalid user role so why we are

getting invalid user R we saw that it

works but at the way uh I have designed

this tutorial the way things should have

happened is we should have got this one

first so why is this invalid role uh

this is where the open- source uh power

comes in that I can go ahead and look in

the project itself I'll open this

project in a new tab and this is the

whole source code that we have available

here now I want to see what's happening

in the source code to see that hey what

kind of users you are actually accepting

what roles you are accepting I just

wrote it as randomly admin user guest

but I have no idea how the roles are

actually going in this is where you see

the source code of an open source

project I'll just probably Zoom it a

little bit and and the first obvious

step is go and check out is should

be uh let's go ahead and uh see where

are the models here are the models in

the O in the user model let's see how

the user model is being defined if I

check this one here oh there's a user Ro

enums where is this uh it's coming up

from the constant. JS so I'll hunt for

the constant I can just search for it as

well but I know uh we designed it so I

know that constant. JS I can just go

into it and oh this is where you are

saying so you have you're supporting

only admin and the user as a role oh

nice I can modify this app as hey I'm

not supporting the guest uh maybe some

other app is so I can reuse my script

I'll just use go ahead and save this and

that's it I fixed the bug and now if I

make a web request it is every single

time going to uh just work with that and

there we go now whenever I need to test

my register API this is an automation

work all I can do is work for this not

only this is I can save these variables

even I can show you how to save these uh

responses and extract some of the data

like for the login purpose if I go ahead

and check how do you log in uh let's go

ahead work like that how do you log in

what data you need you need password and

username only so I can extract from this

whole response uh that give me just the

username and the password yep username

and the password and I can store the

password uh from this or I can just

create instead of random password just

one password for all the tests which is

a common practice I can just go ahead

and do that now in the future I can just

click on this o and uh not the O this

entire collection I can just go ahead

and start run collection so every single

request that is there will automate

there and go ahead and check uh whether

I'm doing all okay or not now if I go

ahead and look onto this one uh you'll

see that there's so much more that is

going on with this one uh just one more

fun stuff because you are so interested

in this one I can just go ahead and look

for YouTube demo and I can say generate

tests yeah that's nice and I can

generate test for whatever the request

I'm looking up forward I'm interested in

this post new request so I'll just go

ahead I should have saved this with some

name that would really make sense so

I'll just go ahead and call this instead

of new request uh we'll call this one as

register that's that's better actually

uh now let's do oops wrong click I can

go ahead and say generate test which

which is in beta but I still love it it

does the job uh this is my register

request so I'll just go ahead and see

this okay this is really nice and I can

just go ahead and register the test uh

this is fairly a new feature uh but

we'll just go ahead and we'll just say

generate the test and now it's uh

couldn't add this due to previously

failed request fix the request oh we

have to fix this we forgot to save my

bad uh and uh okay we'll just remove

this public we are not interested in

this part delete this forgot to

save okay this one is save this one is

save let's go ahead and send this and

there we go we are doing absolutely fine

now now I can go ahead and hit the

generate test again let's just generate

this now this is generating it's working

on it you see the test there and verify

the avar object is present in the

response it it does it on its own a

little AI there but I can fix that I can

see in the body what is the status code

and I can just go ahead and save this uh

respon code you can see that hey and

notice here it's actually even writing

these whole things for me can I just go

ahead and move things here anyways so

notice here again pm. test so you can

you're writing automated test scripts

for that required field that these are

expected Fields valid format email is in

valid format you can just go ahead and

write your own as well but hey these

tests are being generated so anyways you

get the power of this one but I'm not

done yet I'm not done yet this is just

to make spark the Curiosity in you that

there is so much more in the postman so

stop calling it as just hey this is

anyways in the postman if you go ahead

and look on this there is a postman

Learning Center yes because there is so

much that happens in this one I think

it's worth spending your time into this

one if you just go ahead and get started

with send request response and all of

this but there's so much more in the

postman flow collaboration and whatnot

you can even look at the postman docs as

well which is still in the Learning

Center if I just move this here uh what

you'll notice this is in the Learning

Center in itself there is so much that

you can do and uh if I just look at the

write script part and write pre-quest

script write the test with monitors

write test this is where I saw this hey

I can do so much of scripting in the

postman and they give you nice examples

of how postmen collection variables set

details God knows what uh this is all

you can do and you can just edit them

work with that next steps write the

tests this is how you can work with that

and there is so much so much more that

you work with that even uh if you want

to get the random email there is a

community. postman where you can find so

much of answers it's like their own

stack Overflow uh but it's already

pretty default and work with that so uh

this is the basics of how I want you to

see the postman from a different

perspective so yes I know this is a 30

minute long video about what is Postman

but I think somebody needed to come out

and say that Postman is beyond just

sending the request and getting the

response and I think with the demo you

understand more so now if you're a

backend developer or a front-end

developer you truly understand what kind

of monster the postman is it is super

crazy powerful and that's why I'm a big

fan of it and it's free and that's why I

love it even more so that's it for this

video if you want me to uh design a

little bit more on the postman side like

what more we can do and how we can uh

integrate it in our workflow let me know

in the comment section I would love to

do that uh that's it for this video

let's catch up in the next

one