Where we use assert in selenium
William Burgess
Updated on April 22, 2026
In Selenium, Asserts are validations or checkpoints for an application. Assertions state confidently that application behavior is working as expected. One can say that Asserts in Selenium are used to validate the test cases. They help testers understand if tests have passed or failed.
Why do we use assert in selenium?
In Selenium, Asserts are validations or checkpoints for an application. Assertions state confidently that application behavior is working as expected. One can say that Asserts in Selenium are used to validate the test cases. They help testers understand if tests have passed or failed.
How do I declare assert in selenium?
AssertTrue() If the boolean value is true, then assertion passes the test case, and if the boolean value is false, then assertion aborts the test case by an exception. Syntax of AssertTrue() method is given below: Assert. AssertTrue(condition);
Why we use assert in TestNG?
Assertions in TestNG are a way to verify that the expected result and the actual result matched or not. If we could decide the outcome on different small methods using assertions in our test case, we can determine whether our test failed or passed overall.How do you use assert?
The assert keyword is used when debugging code. The assert keyword lets you test if a condition in your code returns True, if not, the program will raise an AssertionError. You can write a message to be written if the code returns False, check the example below.
What is TestNG in testing?
Definition: TestNG (Test Next Generation) is the testing framework. TestNG is inspired from JUnit and NUnit, but it has a new functionality that makes this framework more powerful and easier. TestNG is designed in such a way that it covers all the categories of tests comprising unit, functional and integration.
What do assertions do?
Assertions are mainly used to check logically impossible situations. For example, they can be used to check the state a code expects before it starts running or state after it finishes running. Unlike normal exception/error handling, assertions are generally disabled at run-time. Arguments to private methods.
What is Maven Selenium?
SeleniumAutomation TestingTesting Tools. Maven is Yiddish Word which means Accumulator of Knowledge. Maven is a tool which is used for building and managing Java Based Projects. Basically to put it in simple words is a way to manage dependency for Java Based Project.What is POM model?
Page Object Model, also known as POM, is a design pattern in Selenium that creates an object repository for storing all web elements. It is useful in reducing code duplication and improves test case maintenance.
Does TestNG run tests in parallel?TestNG allows the tests to run in parallel or concurrent mode. This means that based on the test suite configuration, different threads are started simultaneously and the test methods are executed in them.
Article first time published onWhat are the different assertions in TestNG?
- assertEquals.
- assertNotEquals.
- assertTrue.
- assertFalse.
- assertNull.
- assertNotNull.
What is TestNG in Selenium?
TestNG in Selenium is a Java testing framework, inspired by JUnit and NUnit. It overcomes the constraints and disadvantages of JUnit. … From simple unit testing to complex integrated testing, it is designed to simplify all our testing requirements such as functional testing, regression, end-to-end testing, and more.
What is soft assert in TestNG?
To deal with the disadvantage of Hard Assertions, customized error handler provided by TestNG is called Soft Assertion. Soft Assertions are the type of assertions that do not throw an exception when an assertion fails and would continue with the next step after assert statement.
Why do we use assert?
You can use an assert to check if your logical assumption is correct. You can also use assert statements to check if the control flow is correct or not. For example, if you have a function that returns a value, you may want to put an assert statement. However, you may get a ‘non-reachable’ code error.
What are assertions in programming?
An assertion is a statement in the Java programming language that enables you to test your assumptions about your program. … Each assertion contains a boolean expression that you believe will be true when the assertion executes. If it is not true, the system will throw an error.
What is the use of assert statement give example?
Python Assert Statements. An assert statement checks whether a condition is true. If a condition evaluates to True, a program will keep running. If a condition is false, the program will return an AssertionError.
What is assert Java?
assert is a Java keyword used to define an assert statement. An assert statement is used to declare an expected boolean condition in a program. If the program is running with assertions enabled, then the condition is checked at runtime. If the condition is false, the Java runtime system throws an AssertionError .
In which cases are assertions useful?
An assertion is only useful if the code path containing it is executed. Assuming the code is being properly tested, assertions do several useful things: Detect subtle errors that might otherwise go undetected. Detect errors sooner after they occur than they might otherwise be detected.
What is audit assertion?
Audit assertions, also known as financial statement assertions or management assertions, serve as management’s claims that the financial statements presented are accurate. When performing an audit, it is the auditor’s job to obtain the necessary evidence to verify the assertions made in the financial statements.
What is Jenkins in selenium?
Jenkins is an open-source Continuous Integration (CI) server, which automates the build and deploy process of your web applications. By running your Selenium test suite in Jenkins, you also automate testing as part of the build process.
Is BDD a framework?
Behavior Driven Development (BDD) framework is a software development process that is an offshoot of Test Driven Development (TDD) framework. BDD is an agile testing methodology. It is the process of development, based on test-driven development and domain-driven, object-oriented analysis.
Where is TestNG used?
TestNG is a testing framework for the Java programming language created by Cédric Beust and inspired by JUnit and NUnit. The design goal of TestNG is to cover a wider range of test categories: unit, functional, end-to-end, integration, etc., with more powerful and easy-to-use functionalities.
What is Dom in selenium?
DOM stands for Document Object Model. In simple words, DOM specifies the structural representation of HTML elements. There are four ways through which we can identify and locate a web element using DOM.
What is Apache POI selenium?
Apache POI is the most commonly used API for Selenium data driven tests. POI is a set of library files that gives an API to manipulate Microsoft documents like . xls and . xlsx. It lets you create, modify, read and write data into Excel.
Is TestNG a hybrid framework?
Hybrid Driven Framework is a combination of both the Data-Driven and Keyword-Driven framework. … Keywords are maintained in a separate Java class file and test data can be maintained either in a properties file/excel file/can use the data provider of a TestNG framework.
What is TestNG framework?
TestNG is an open-source test automation framework for Java. It is developed on the same lines of JUnit and NUnit. Few advanced and useful features provided by TestNG makes it a more robust framework compared to its peers. The NG in TestNG stands for ‘Next Generation’.
What is POM XML used for?
A Project Object Model or POM is the fundamental unit of work in Maven. It is an XML file that contains information about the project and configuration details used by Maven to build the project. It contains default values for most projects.
What is difference between Maven and TestNG?
TestNG is a testing framework. … It also generates testing reports. Maven is a software project management and comprehension tool. It manages all dependencies and different flows for building a project.
What is invocation count in TestNG?
Invocation count determines how many times test will execute. For EX: Execute test 7 times. import org.testng.annotations.Test; public class MultipletimesRun { @Test(invocationCount=7)
What is thread in TestNG?
TestNG provides multiple ways to execute tests in separate threads. In testng. xml, if we set ‘parallel’ attribute on the tag to ‘tests’, testNG will run all the ‘@Test’ methods in tag in the same thread, but each tag will be in a separate thread. … In testNG we can achieve parallel execution by two ways.
What is thread pool size in TestNG?
The threadPoolSize attribute tells TestNG to create a thread pool to run the test method via multiple threads. With thread pool, it will greatly decrease the running time of the test method.