Role of OSI Layer when we open a webpage

Our sessions are role of OSI layer when we open a webpage in a real world 

When you are trying to open a web page on your PC this is what typically happens (I am just putting the basic concepts together for understanding, most of the steps below are much more elaborate, complicated and involves more devices, protocols  & lot of other details than shown below)

Role of OSI Layer when we open a website

Keep in mind that although the OSI model is what we study, we don't use OSI in real work networks. We use the TCP/IP Network Model.  The OSI model is still taught due to it's usefulness in separating concepts into modules (layers).  The OSI model is translated to the TCP/IP model.

Understanding of OSI Layer Model

User Launches a site in the browser, You typically  type an web address (Uniform resource locator)  in a Web browser. Web browser uses something called Hypertext Transfer Protocol  which is an Application layer protocol. 

OSI Layer Datas, Protocols and Activities 

Behind the scene the web browser get the IP address of the URL you typed (say http://www.spansid.blogspot.com) using a process can Domain Name System which is also an Application layer protocol.

Role of OSI layer when open a webpage in Seven Layer

Page Performance testing with HTML report using Google Lighthouse

Lighthouse

Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, and more.

You can run Lighthouse in Chrome DevTools, from the command line, or as a Node module. You give Lighthouse a URL to audit, it runs a series of audits against the page, and then it generates a report on how well the page did.

Here I have done Lighthouse Page Performance testing for "techsouljours.blogspot.com" 

How we go for the Steps: 

Steps 1. Launch the site of any URL to test and if want to check for particular page or link, kindly redirect to it.

Google LightHouse Web Performace Test

2. From Keyboard press Function key F12 and go to Audit Tab.

Google LightHouse Web Performance tool - Audit

3. We could see perform an audit to test the particular page, click and proceed.

After waiting for 50 - 60 seconds

Google LightHouse web performance chrome console testing website with report

We could see the performance report 

Device Not Found in ADB and here is the solution to connect device in system

HOW TO CONNECT DEVICE IN SYSTEM WHEN ITS NOT SHOWING IN ADB

When device will not  show in ADB, Follow the steps below:

1. First make sure your device is connected in system with USB.
2. Now go to My Computer and RIGHT click and select the MANAGE.
3. Now click on Device Manager and check if your device is not installed it will be showing Question (?) Mark there under Portable Devices

ADB Device not found in windows

4. Right click on it and select the Update Driver software 

ADB device not found issue resolving by updating driver software

5. Now Select Browse My computer for driver software

Update driver software for adb device not found

6. Now select the Let me Pick from a list of device on my computer

ADB device not found, solution to update driver software

7. Select the first options and keep selecting Next

ADB device found by updating driver software

8. At last select the close option as its update and now you can see the device connect and 

- check in command prompt mentioning adb devices 

- this command will show you all the devices connected in your system. 

Hope this information will be useful to you all... :)

Post author by Test Engineer Ruchi Singh

Automation testing for mobile application via terminal to find crash (Monkey testing)

Monkey testing is a technique used in software testing to test the application or product by providing random data and observing if the system or application crashes

In Monkey testing the tester or sometimes developer also is considered like a monkey assuming that if a monkey uses the computer then he will enter some random data without any knowledge or understanding.
Here the tests done are very random and it may not be correct.
Because of such random testing the testers may not be able to recreate the issues or bugs.

Advantages of Monkey testing:

• Monkey testing is a very good approach to find out some new bugs which may not be possible from the stated scenarios.
• Monkey testing can also be a good way to perform stress testing and load testing since the scenarios tested are generally random and ad-hoc.
• It is very easy to execute because it just requires some random data to run against some random tests.
• Execution of test cases and setting up of environments expenses are very less in monkey testing.
• By using tools the process of Monkey testing can be automated.
• Monkey testing can be performed for desktop applications, web applications as well as mobile applications.

Wanna find more crash in the mobile application android (apk) or iOS (ipa), Here we go

Make sure your device is connected in system and Login in the  App before running it.

Command you need to give in command prompt:

C:\Users\user>adb shell monkey -p com.acb.acbsmart -v 10000

-p stands for package name (com.acb.acbsmart)
-v stands for number of times you want to run (eg. you can give what ever you want like: 10000,15000, 12000,etc), it will run till that many iterations.

Monkey testing via terminal to find crash in the mobile application

Note: Before running this Monkey testing check with developer as this  will Hang Server (mainly when we perform so many iteration) or best you can do is Turn off the Internet and then RUN. 

Hope this information will be useful to you all... :) 

Post author by Test Engineer Ruchi Singh