DEV Community: Hariom Shukla

1. Describe the Python Selenium Architecture in Detail? Significance of the Python Virtual Environment?

Hariom Shukla — Wed, 20 Dec 2023 06:01:44 +0000

As we all know, Selenium is an automation tool used for web application testing, and Python is a programming language. Selenium scripts can be written using only programming languages; the most commonly used programming languages are Java and Python.

Python Selenium Architecture consist of multiple things that is necessary to design architecture.

Like Selenium Grid, Selenium IDE, Selenium Web Driver, Selenium Remote Control.

It is a popular open-source framework for automating web browsers. It allows developers to write scripts in various programming languages, including Python, to automate the testing of web applications or perform other browser automation tasks. The Python Selenium architecture involves several components and concepts.
Here are the components-

1. Selenium WebDriver:

At the core of the Selenium architecture is the WebDriver, which is a browser automation API. It provides a programming interface to interact with web browsers, allowing you to control browser behavior programmatically.
WebDriver supports various browsers such as Chrome, Firefox, Safari, and Internet Explorer, among others.

2. Browser Driver-

Each browser requires specific driver to communicate with the WebDriver like If we want to automate Chrome we need ChromeDriver for automating Firefox, We need GeckoDriver.

3. Script Execution Flow-

a. Initiate WebDriver
b. Navigate
c. Locate Elements
d. Perform Actions
e. Assertions
f. Cleaner

4. Locaters
Locators are used to identify and interact with HTML elements on a web page. Common locators include:
ID, Name, Class Name, XPath, CSS Locater

5. WebDriver Manager
WebDriver Manager is a library that simplifies the management of browser drivers. It can automatically download and configure the appropriate driver for the specified browser, making it easier to set up and maintain Selenium projects.

6. Selenium Grid-

Selenium Grid allows you to run tests on different machines in parallel. It consists of a hub and multiple nodes. The hub manages the test distribution, and nodes execute the tests on different browsers and platforms.

Python Virtual Environment-

Python Virtual Environment is the self contained directory that contains Its own python interpreter and a set of libraries and scripts. It allows you to create isolated environments for python projects, ensuring that each project without interfering the Global python environment.

Here are some key benefits of using Python Virtual environment-

Isolation
Dependency Management
Easy Deployment
Ease in Collaboration
Version Compatibility

What is Selenium? Why do we use selenium for Automation?

Hariom Shukla — Tue, 19 Dec 2023 12:44:47 +0000

Selenium is a open-source tool that helps to automate web browsers for testing. It is free to use. It's used to test web applications like email programs and shopping carts across different browsers and platforms.
Selenium includes a suite of software that developers can use to automate web applications, including-

Selenium IDE
Selenium Remote Control
Selenium Grid
Selenium WebDriver

1. Selenium IDE-

Selenium IDE is part of the Selenium Test Suite and is easy to use, even for beginners. It doesn't require programming logic to write test scripts. Instead, users can record their interactions with the browser to create test cases.

a. IDE = Integrated Development Environment
b. It is just a web-browser extension
c. You need to download and install the extension for that particular web browser and start working with it.
d. It can automate as well as record the entire automation process
e. People generally do not use it rather they use the Selenium scripts for the same.

2. Selenium Remote Control

a. It is outdated technology
Do not used these days
b. It has been replaced by WebDriver, which is far more better and easy to use
c. It has been replaced by Selenium WebDriver

3. Selenium Grid

a. It is used to run parallel tests on multiple devices running different browsers at different geographical locations
b. We can run multiple test-cases simultaneously at one moment of time
c. It used the Hub-Node architecture or Master-Slave architecture

4. Selenium WebDriver

Selenium WebDriver is a web framework that allows users to run cross-browser tests. It's an open-source collection of APIs that automates web application testing. Selenium WebDriver helps testers ensure that a website works as intended on different browsers.

Use Of Selenium for Automation Testing-

1. Scalability-

Selenium allows for parallel test execution, which can significantly reduce the overall testing time.

2. Flexibility-

Selenium can help developers and testers make quick changes to the code, reducing duplication and improving maintainability.

It does support multiple browsers like Firefox, Chrome, Safari, Internet Explorer etc.
Selenium allows users to create test scripts in different programming languages, including Java, Python, C#, Ruby, and more.
It is free to use and open-source tool.

What is Manual Testing? What are the benefits and drawbacks of manual testing?

Hariom Shukla — Thu, 23 Nov 2023 12:38:29 +0000

What is Manual Testing?

Manual testing is a type of Software testing where test cases are executed by the tester manually without using automated tools.
This is done keeping in mind the end user and with the end user prospective.
It identify the bugs, issues and defects in the application and insures that the application is bug free.
It plays an important role in product lifecycle. It is necessary for every recently built software before the automation testing.

Here are some benefits of manual testing-

Manual testing is crucial for usability testing, where the focus is on evaluating how easy the software is to use, and how well it meets the needs of the user.

2.Manual testing is very cost effective for small projects as less paid software are required for manual testing.

It brings the human prospective of testing that is only done when human interference is there.
It easily detects the ui/ux issues as It uses the human brain, like what is the colour, font size, context etc.
Manual testing is important in evaluating and testing the user experience.
Manual testing is well-suited for exploratory testing, where testers can actively explore the application to find defects that may not be covered by automated tests. Testers can use their creativity and domain knowledge to uncover unexpected issues.

Drawbacks of Manual Testing-

While manual testing has a lot of benefits, it also comes with certain drawbacks, especially in the context of modern software development. Here are some of the limitations and drawbacks of manual testing:

Manual testing is very time consuming with reference to the automated testing, as It requires a lot of human interference.

2.Manual testing may not cover all possible test scenarios, especially in large and complex applications.

Test results in manual testing can be subjective and dependent upon tester's individual skill, experience and knowledge. It may not cover all possible test scenarios in the application.
While manual testing may be cost-effective for short-term or small projects, it can become expensive in the long run, especially when considering the need for repeated testing during each development cycle or release as repeated testing can be easily done by automated testing.
Manual testing becomes challenging to scale as the size and complexity of the software grow. As the application evolves, the number of test cases and the effort required for manual testing can become frustrating.

So these were some benefits and drawbacks of manual testing.

What is Difference between Functional and non functional testing?

Hariom Shukla — Thu, 23 Nov 2023 11:23:39 +0000

Functional Testing-

Functional testing is a type of testing that tests the functionality of a system. It tests the behaviour of the system.
Based on the requirement of the client a document is prepared is called requirement specification of software specification.

Non-Functional Testing-

Non functional testing is testing the non functional aspects of the software like performance, quality, accuracy, durability, stability etc.

Difference Between Functional and Non Functional Testing

Functional Testing verifies the operations and actions of the software.

While Non functional testing verifies the behavior of the system.

Functional testing is based on the requirement of the customer.
It helps to inhance the behavior of the application.
Functional testing is easy to execute manually. It tests what the product does.

Example-
Unit Testing, Integration Testing, Regression Testing etc.

Non Functional testing is testing of customer's expectations.
While helps to improve the performance of the application.
Non functional testing is based on the performance requirement.

Example-
Performance testing, Load Testing, Stress Testing, Scalability testing.

Functional Testing of a login page-

Identify the test case. 2.Setup the test environment.
Prepare test data 4.Open the web browser and execute test.
The system should login properly.

Non Functional testing example in detail-

*Load Testing:
*
Simulate multiple users accessing the website simultaneously to assess its performance under expected load conditions.

**Stress Testing:
Determine the website's behavior when subjected to loads beyond its capacity. This helps identify the breaking point.

Endurance Testing:
Assess the system's ability to handle a sustained load over an extended period to identify any performance decrement over time.

**Scalability Testing:
**Evaluate how well the system scales by increasing the number of users, transactions, or data volumes.

These were some example of functional and non functional testing.

Boundary Value Analysis, Decision Table, Use Case Testing and LCSAJ Testing

Hariom Shukla — Tue, 21 Nov 2023 12:01:45 +0000

Boundary Value Analysis-

Boundary Value Analysis (BVA) is a software testing technique that focuses on testing values at the edges of boundaries of valid input domain. As erorrs are always occur at the boundaries of input ranges. BVA is commonly used in both functional and non-functional testing.

Example of Boundary Value Analysis-

Let's consider a system that accepts input for the age of a user, and the valid range for age is defined as 15 to 96.

There can be multiple test cases in this scenerio-

Minimum valid input Test case- 15
Just below the lower band Test case- 14
Just upper the upper band Test case- 97
Maximum Valid input Test case- 96
Middle of the range Test case- 65

The idea behind Boundary Value Analysis is to test not only the valid inputs but also values that are on the boundaries of valid and invalid ranges.
This technique is not limited to numeric values; it can be applied to any input field where there are defined boundary, such as date ranges, text lengths, and more.

Decision Table Testing with Example-

This is the technique used in software testing that a system behaves correctly under different conditions.
The decision table is a matrix that shows all possible combinations of inputs and their possible outputs.

Let's consider a simple example of decision table for a traffic light control system.

The system has two input conditions-

One is the colour of lights(Red, Yellow, Green) second one is the presence of pedestrian(Yes, No) .

The system has two options whether to change the traffic light condition or open the pedestrian system.

Use case testing with example-

Use case testing is the black box testing technique that focuses on validating the system functionality based on specified use case.
It helps that the systems meets the requirement and perform as expected in all the scenarios.
Let's take an example of an online shopping system-

Use Case- Place Order

Actor- Customer
Goal- Place an order for goods

Main Success Scenario:

a. Customer logs in to the system.
b. Customer browses products and adds items to the shopping cart.
c. Customer reviews the shopping cart.
d. Customer proceeds to checkout.
e. Customer provides shipping information.
f. Customer provides payment information.
g. Customer confirms the order.
h. System processes the order and sends a confirmation to the customer.

LCSAJ Testing with example-

Large conditional statement and jump is a white box testing technique that focusses on getting different paths within a program. The goal is to ensure that all possible conditions within these structure are tested at least once.

Example-

Consider a simple program that checks the eligibility of a person for voting based on their age and citizenship status. The program has below conditions:

a. If the person is at least 18 years old and is a citizen, they are eligible to vote.
b. If the person is between 16 and 18 years old (inclusive) but not a citizen, they are eligible for pre-voting registration.
c. If the person is under 16 years old, they are not eligible.

What is Software Testing? What We need to know about Software Testing? What is the relevance of software testing?

Hariom Shukla — Sat, 18 Nov 2023 05:27:48 +0000

In the era of technology, where software applications impact our daily lives, the importance of software testing cannot be denied. Software testing is a crucial phase in the software development life cycle (SDLC) that ensures the quality, reliability, and functionality of a software product. In this blog, I will dive deep into what software testing is, why it is essential, and what one needs to know about this critical aspect of software development.

What is Software Testing?

Software testing is the process of evaluating a software application to identify any bugs, errors, or defects that might compromise its performance or functionality. The primary goal of testing is to ensure that the software meets the specified requirements and functions flawlessly in real-world scenarios. Testing is not a one-time event but an ongoing process throughout the software development life cycle, from the initial planning phase to post-release maintenance.

What We need to know about Software Testing?

**Quality Assurance (QA):
**Software testing is a fundamental component of quality assurance. QA focuses on preventing defects rather than just detecting them, making the software development process more reliable.

*Types of Testing: *
There are various types of testing, including functional testing, non-functional testing, manual testing, and automation testing. Functional testing ensures that the software performs its intended functions, while non-functional testing assesses aspects like performance, security, load time, ui/ux and usability.

*Testing Levels: *
Testing is conducted at different levels, such as unit testing, integration testing, system testing, and acceptance testing. Each level of testing serves a specific purpose, contributing to the overall quality of the software.

Test Cases and Scenarios:
Test cases are sets of conditions or variables used to determine whether the software behaves as expected. Test scenarios are broader and have multiple test cases to simulate real-world usage.

Relevance of Software Testing:

Software is Testing is very important in Software Development. Here I have written its importance but not limited to this-

Enhanced Quality:
Software testing is a crucial thing for identifying and fixing defects, ensuring that the final product meets the highest quality standards. This leads to increased customer satisfaction and trust.

**Cost-Effectiveness:
**Identifying and fixing bugs early in the development process is more cost-effective than addressing them after the software has been released. Software testing helps in minimizing the financial impact of post-release issues.

*Security: *
With the rising concerns about data security, software testing plays a crucial role in identifying danger and ensuring compliance with industry standards and regulations.

User Experience:
Effective testing contributes to a positive user experience by identifying and rectifying issues related to usability, performance, and reliability. A seamless user experience is crucial for the success of any software application.

Conclusion:

In the world of software development, where innovation is fast and user expectations are high, software testing plays very crucial role for enhance quality, increase security, user experience and cost effectiveness.