Example build.xml file for testng

This is useful for example to centralize test setup for multiple test classes in a common superclass. In that case, TestNG guarantees that the " Before" methods are executed in inheritance order highest superclass first, then going down the inheritance chain , and the " After" methods in reverse order going up the inheritance chain.

This section describes the format of testng. The current DTD for testng. You can also define new groups inside testng. If you want the classes and methods listed in this file to be run in an unpredictable order, set the preserve-order attribute to false testng. TestNG testng1. Additionally, the following command-line switches are available:.

This documentation can be obtained by invoking TestNG without any arguments. TestNG testng. If this property is set, TestNG will use it to look for your test classes instead of the class path.

This is convenient if you are using the package tag in your XML file and you have a lot of classes in your classpath, most of them not being test classes. Example: java org. TestNG -groups windows,linux -testclass org.

MyTest The ant task and testng. Important : The command line flags that specify what tests should be run will be ignored if you also specify a testng. Methods annotated with Test that happen to return a value will be ignored, unless you set allow-return-values to true in your testng. Not only can you declare that methods belong to groups, but you can also specify groups that contain other groups.

Then TestNG can be invoked and asked to include a certain set of groups or regular expressions while excluding another set. This gives you maximum flexibility in how you partition your tests and doesn't require you to recompile anything if you want to run two different sets of tests back to back.

Groups are specified in your testng. For example, it is quite common to have at least two categories of tests. A simple way to solve this problem is to create a group called "broken" and make these test methods belong to it. Test methods don't have to be parameterless. You can use an arbitrary number of parameters on each of your test method, and you instruct TestNG to pass you the correct parameters with the Parameters annotation.

There are two ways to set these parameters: with testng. The Parameters annotation can be placed at the following locations:.

Notes: The XML parameters are mapped to the Java parameters in the same order as they are found in the annotation, and TestNG will issue an error if the numbers don't match. Parameters are scoped. In testng. This is convenient if you need to specify a parameter applicable to all your tests and override its value only for certain tests.

Specifying parameters in testng. In this case, you can use a Data Provider to supply the values you need to test. A Data Provider is a method on your class that returns an array of array of objects. By default, the data provider will be looked for in the current test class or one of its base classes. If you want to put your data provider in a different class, it needs to be a static method or a class with a non-arg constructor, and you specify the class where it can be found in the dataProviderClass attribute: StaticProvider.

TestNG will use the test context for the injection. The Data Provider method can return one of the following types: An array of array of objects Object[][] where the first dimension's size is the number of times the test method will be invoked and the second dimension size contains an array of objects that must be compatible with the parameter types of the test method.

This is the case illustrated by the example above. The only difference with Object[][] is that an Iterator lets you create your test data lazily.

TestNG will invoke the iterator and then the test method with the parameters returned by this iterator one by one. This is particularly useful if you have a lot of parameter sets to pass to the method and you don't want to create all of them upfront. An array of objects Object[]. Lazy alternative of Object[]. Causes the test method to be invoked once for each element of the iterator.

The only limitation is that in case of iterator its parameter type can't be explicitly parametrized itself. Method as first parameter, TestNG will pass the current test method for this first parameter. This is particularly useful when several test methods use the same DataProvider and you want it to return different values depending on which test method it is supplying data for. Parallel data providers running from an XML file share the same pool of threads, which has a size of 10 by default.

If you want to run a few specific data providers in a different thread pool, you need to run them from a different XML file. Here is an example:. Sometimes, you need your test methods to be invoked in a certain order. Here are a few examples: To make sure a certain number of test methods have completed and succeeded before running more test methods.

Dependencies with annotations You can use the attributes dependsOnMethods or dependsOnGroups , found on the Test annotation. In this example, method1 is declared as depending on method serverStartedOk , which guarantees that serverStartedOk will always be invoked first. In this example, method1 is declared as depending on any group matching the regular expression "init. Note: as stated before, the order of invocation for methods that belong in the same group is not guaranteed to be the same across test runs.

Skipped methods will be reported as such in the final report in a color that is neither red nor green in HTML , which is important since skipped methods are not necessarily failures. Both dependsOnGroups and dependsOnMethods accept regular expressions as parameters.

For dependsOnMethods , if you are depending on a method which happens to have several overloaded versions, all the overloaded methods will be invoked. If you only want to invoke one of the overloaded methods, you should use dependsOnGroups. For a more advanced example of dependent methods, please refer to this article , which uses inheritance to provide an elegant solution to the problem of multiple dependencies. This behavior might not be desirable in certain scenarios, such as for example testing a sign in and sign out of a web browser for various countries.

In such a case, you would like the following ordering: signIn "us" signOut "us" signIn "uk" signOut "uk" For this ordering, you can use the XML attribute group-by-instances. Factories Factories allow you to create tests dynamically. For example, imagine you want to create a test method that will access a page on a Web site several times, and you want to invoke it with different values: TestWebServer.

Or, if building a test suite instance programatically, you can add the factory in the same manner as for tests:. The objects returned can be of any class not necessarily the same class as the factory class and they don't even need to contain TestNG annotations in which case they will be ignored by TestNG.

Factories can also be used with data providers, and you can leverage this functionality by putting the Factory annotation either on a regular method or on a constructor. Class level annotations The Test annotation can be put on a class instead of a test method: Test1. You can still repeat the Test annotation on a method if you want to add certain attributes.

For example: Test1. Ignoring tests TestNG lets you ignore all the Test methods : In a class or In a particular package or In a package and all of its child packages using the new annotation Ignore. Here's a sample that shows how to ignore all tests within a class. Ignore; import org.

When Ignore is placed on a class, all the tests in that class will be disabled. Additionally, the attribute thread-count allows you to specify how many threads should be allocated for this execution.

Note: the Test attribute timeOut works in both parallel and non-parallel mode. Note that testng-failed. Similarly, you can invoke TestNG on a testng. In order to do this, you can use the classes found the package org.

Each of these classes correspond to their XML tag counterpart. Child" ; test. In order to achieve this, you need to use an Annotation Transformer. TestNG -listener MyTransformer testng.

When the method transform is invoked, you can call any of the setters on the ITest test parameter to alter its value before TestNG proceeds further. Method Interceptors Once TestNG has calculated in what order the test methods will be invoked, these methods are split in two groups: Methods run sequentially.

These are all the test methods that have dependencies or dependents. These methods will be run in a specific order. Methods run in no particular order. These are all the methods that don't belong in the first category.

The order in which these test methods are run is random and can vary from one run to the next although by default, TestNG will try to group test methods by class. Your intercept method is expected to return a similar list of IMethodInstance , which can be either of the following: The same list you received in parameter but in a different order.

A smaller list of IMethodInstance objects. A bigger list of IMethodInstance objects. Once you have defined your interceptor, you pass it to TestNG as a listener. For example: Shell java -classpath "testng-jdk TestNG -listener test. NullMethodInterceptor -testclass test. FooTest For the equivalent ant syntax, see the listeners attribute in the ant documentation. These interfaces are broadly called "TestNG Listeners". Using the Listeners annotation on any of your test classes.

Using ServiceLoader. Specifying listeners with testng. The reason is that these listeners need to be known very early in the process so that TestNG can use them to rewrite your annotations, therefore you need to specify these listeners in your testng. Note that the Listeners annotation will apply to your entire suite file, just as if you had specified it in a testng.

If you want to restrict its scope for example, only running on the current class , the code in your listener could first check the test method that's about to run and decide what to do then. Here's how it can be done.

First define a new custom annotation that can be used to specify this restriction: Retention RetentionPolicy. With ServiceLoader, all you need to do is create a jar file that contains your listener s and a few configuration files, put that jar file on the classpath when you run TestNG and TestNG will automatically find them. Here is a concrete example of how it works. Let's start by creating a listener any TestNG listener should work : package test.

Free selenium tutorials for beginners and experts. In Build. AfterClass; import org. BeforeClass; import org. And the below is the build. Under that folder, we need to enter the below command ant testng-execution Now it will show you the build. Hope it helped you. Please let us know if you encounter any issues. Build Tools:. Ant Tutorials. Hi can you tell why i am getting the below mentioned error while following the steps mentioned above [testng] java.

This post was really helpful for me. Thanks a lot. Hi, Thank you so much for this! Very helpful :- I followed all of the above steps, the run in ant resulted in the following error: 'no suites, classes, methods or jar file was specified'. Hi, how i can use this with webdriver? Passing parameters from. Thank you very much, this heped alot. Step 3: In this step, we will run the test cases. Now we do not need to run the java files individually.

We have to run the XML file which will automatically execute all the test cases as we have configured all the class files inside the XML file that are containing test cases. Right click on the testng. JavaTpoint offers too many high quality services.

Mail us on [email protected] , to get more information about given services. Please mail your requirement at [email protected] Duration: 1 week to 2 week. TestNG Tutorial. Reinforcement Learning. R Programming. React Native. Python Design Patterns. Python Pillow. Python Turtle. Verbal Ability. Interview Questions. Company Questions. Artificial Intelligence.

Cloud Computing. Data Science. Angular 7.