The client-side part of the software is known as the front end. It may be defined as anything that is visible while utilizing an application. A three-tier architecture is present in every online application. Clients, Servers, and information systems or resources are all included. The client is made up of the presentation layer. This layer is tested by front-end testers. They examine the usability and functionality of a website or application by doing GUI testing.
Let's say you're putting a shopping app through its pages. Front-end testers examine if the website's appearance and feel are in line with the client's needs. They also verify that needed functionality such as adding an item to the shopping cart and menu click events are operational. Front-end testing encompasses a wide range of testing techniques. In the next sections, we'll go through this in more detail. However, before we get started, let's look at how front-end testing differs from back-end testing.
We will study the following in this tutorial −
What is front-end testing, and what does it entail?
Why Is Front-End Testing Necessary?
What is the definition of back-end testing?
Important Front end testing tools Front end testing vs. backend testing
Important tools for back-end testing
Let's talk about why front-end testing is necessary now that we know what it is and how it differs from back-end testing.
End users don't have a good understanding of how the back end operates. They only notice when there is a problem with the application's user interface. Every business wants to succeed. Only if the firm offers a consistent client experience will this be achievable. For example, an app should allow for precise interaction. It should be quick and error-free, regardless of the device or browser being used. Front-end testing is useful in this situation. Testers test on a variety of devices as well as browsers. They only declare an app error-free if it passes all of the testing requirements.
Let's speak about code now. New usability and accessibility standards have been developed by the W3C. Your HTML code must adhere to particular guidelines, and your website should be accessible to everyone, including individuals with impairments. Front-end testing includes accessibility testing as a must. To put it another way, it's a must-do before launching a website.
Apart from that, the Internet of Things (IoT) has ushered in a new era of app development. With the growing usage of linked applications on your wristwatch, smartphone, and smart TV, front-end testing is necessary to ensure that an app's behavior is consistent across several tiers.
Backend testing is a sort of testing that examines a 3 Tier Architecture's application and database layers.
Back-end testing in a complicated software program such as ERP would comprise validating the business logic in the Application Layer. Backend testing examines the server-side or database for simpler applications. This implies that data entered in the front end will be validated against the database on the back end. SQL Server, MySQL, Oracle, DB2, and more database formats are available. As a record, the data will be grouped in tables.
ACID attributes, CRUD operations, schema, and business rule adherence are all tested in databases. Security and performance of databases are also examined.
There is no need to utilize the GUI for back-end testing. To retrieve the answer in any default format, you can directly send the data using a browser with the parameters necessary for the function. Consider XML or JSON as examples. You may also connect directly to the database and verify the data with SQL queries.
Backend testing comes in a variety of forms:
Metadata is the subject of structural testing. Tables, Keys, Columns, Schema, Indexes, Functions, Triggers, and other items that cannot be directly utilized by users are tested in the structural backend.
Functional testing examines how data is translated from the backend to the frontend. As an example, If we ask for the price of a product on an e-commerce website, the front-end should map with the relevant database and deliver acceptable data.
Non-functional testing may be thought of as performance, load, and stress testing, in which the testers assess the database's ability to handle unexpected demands. Non-functional testing includes security testing as well.
The following are the tool categories −
#1) Database interfaces: interfaces such as TOAD, PHPMyAdmin, and others allow you to run database queries.
#2) Benchmarking tools for database load and performance, such as SLOB, HammerDB, and others.
Data is an essential component of all computer programs. The majority of apps are overburdened with data.
If you own a program with a lot of data, checking the backend is critical. To ensure the highest quality of your product, you must ensure that data is appropriately saved and accessed as needed.
Furthermore, data security, accuracy, and integrity are all critical problems for every software.
If you fail in either of your software projects, you will fail terribly in the market. The procedure also avoids issues such as data corruption, stalemate, and data loss.
It allows you to test databases, servers, and APIs.
It identifies flaws early on, lowering the cost of repairing them.
Assist you in thoroughly testing your application by giving you total control over the test coverage.
Avoid deadlock and data loss problems.
Improves the system's functional consistency and durability.
It improves the data quality.
Manual backend testing necessitates a thorough understanding of databases.
It may increase the expense of your organization.
Backend testing examines the application and database layers of a 3 Tier Architecture, whereas frontend testing examines the display layer.
Frontend testing always focuses on the user interface, whereas backend testing focuses on databases and business logic.
Frontend testing requires no data to be saved in a database, but backend testing requires data to be stored in a database.
Frontend testing is required to ensure that the application functions properly, but backend testing is required to ensure that there are no deadlocks, data corruption, or data loss.
Backend testers must be well-versed in the database and Structured Query Language (SQL) principles, while frontend testers must be well-versed in business requirements and automation frameworks tools.
Unit tests, acceptance testing, accessibility testing, and regression testing are examples of frontend testing, whereas SQL testing, API testing, and other backend testing examples are available.
|Frontend testing||Backend testing|
|The GUI is always used for frontend testing.||Databases and business logic testing are part of back-end testing.|
|The tester must be familiar with both the business requirements and the technologies used by automation frameworks.||To do back-end testing, the tester must have a thorough understanding of database and Structured Query Language (SQL) fundamentals.|
|Testing is carried out using a graphical user interface (GUI).||Testing may or may not be carried out using a graphical user interface (GUI).|
|It is not necessary to save any data in a database.||It does necessitate the storage of data in the database.|
|It is critical to test the application's general functionality.||Backend testing is necessary to detect deadlock, data corruption, data loss, and other issues.|
|The following are examples of the types of testing that have been performed: Unit tests, acceptance testing, accessibility testing, regression testing, and other types of testing are all available.||SQL Testing, API Testing, and other forms of database testing are commonly employed.|
Front-end testing may be done with a variety of tools. The following are some of the most important front-end testing tools −
Sauce Labs − Sauce Labs is a tool that lets you test your mobile apps and websites across a variety of browsers, physical devices, and operating systems.
Database testing, often known as Back-end testing, is crucial. Here are some useful back-end testing tools for detecting problems like deadlocks, data corruption, and poor performance.
Data Factory − A database testing tool is Data Factory. For database testing, it serves as a data generator and manager. It offers a user-friendly interface and can handle complex data relationships.
Data Generator − Another backend testing tool is DTM Data Generator. For database testing, it is used to generate data rows and schema objects. On the database, the tool provides load usability and performance testing.
TurboData − Test data with foreign keys may be generated using the Turbodata software application. It allows you to utilize SQL commands like Select, Updates, and Delete. Multiple sequential files and relational databases are also supported.