PDF, Emails and Screenshot of Test Reports in Selenium

STC Admin

7 years ago

In this chapter, we are going to discuss the generation of the test reports in the presentable format to higher management and development team to report the defects and the testing progress. The presentable formats of test reports are PDF, email, and screenshots.

Test automation is not only the procedure to automate the test cases but also, it is the responsibility of the testers to execute the automated test suite, find the defects and report these defects or bugs to the development team to fix and the higher management to keep the track of the application under test. Such reports must be in a very presentable format such has it should be very comprehensive to understand and complete in its entirety.

TestNG Framework Test report

TestNG framework library provides a test report in HTML format every time the execution of the test suite is completed. It creates a test-output folder that is present at the root of the test project. This folder contains two types of test reports which are as follows:

html: This html report file contains the test report of a recently executed test suite. It contains details like an error, reporter logs, groups, time, TestNG xml files, etc. as shown below.

Emailable-report.html: This html report file contains the summary of current test execution that has test cases message in color codes. The test cases that are passed are in green color and the test cases which are failed are in red color as shown below.

Customisation of TestNG Report

TestNG default reports are very detailed and handy. But still sometimes, we need to customize the report as per the team requirements such as remove or add one or more fields from the report, change the report layout, display the report in different format such as PDF, html, excel, etc. for all of such requirement TestNG framework has two interfaces that help in report customization as follows:

ITestListener Interface.
IReporter Interface.

ITestListener Interface

This interface is used to customize real-time test report i.e. when we execute a handful of test cases using TestNG framework and we desire a report for an individual test case. In this scenario, for each test case, we have to implement ITestListener interface which will override onTestFailure, onTestSuccess, onTestStart, onTestSkipped, onFinish methods to convey the correct status of the currently executing test case into the report.

Following are the steps to use ITestListener interface to customize TestNG report

Create a JAVA class TestNGReporting that implements ITestListener interface.
Implement and override all the methods of the ITestListener interface in the class TestNGReportingas shown below.
Create another class TestReport that listens to class This can be achieved through annotation as shown below.

Create four tests in the class TestReportsuch that 1^st test method asserts to true, 2^nd test method asserts to false, 3^rd test method asserts to true but depends on 1^st test method and 4^th test method is empty but depends on 2^nd method as shown below. The 4^th method is purposely kept empty, so that test may get skipped.

Class TestNGReporting that implements ITestListener interface

Class TestReport that listens to class TestNGReporting

Output

When we run the TestReport as TestNG test, we will obtain the following test reports.

Real-Time Console Report

Default Index.html

Default Emailable-report.html

IReporter Interface

This interface is implemented to customize the final test report that is generated by TestNG framework. It has only one method to override i.e. generateReport. This method possesses all the required information to complete the test execution in the List<ISuite> with which report can be generated.

Following are the steps to use IReporter interface to customize TestNG report

Create a JAVA class TestReporterInterfacethat implements IReporterinterface.
Implement and override a single method of the IReporterinterface in the class TestReporterInterface as shown below.
Create another class TestReporterReport that listens to class This can be achieved through annotation as shown below.

Create four tests in the class TestReporterReport such that 1^st test method asserts to true and has test properties as (@Test (priority=0, description=”testCaseOne”)), 2^nd test method asserts to false and has test properties as (@Test (priority=1, description=”testCaseTwo”)), 3^rd test method asserts to true but depends on 1^st test method and has test properties as (@Test (priority=2, description=”testCaseThree”, dependsOnMethods=”testCaseOne”))and 4^th test method is empty but depends on 2^nd method and has test properties as (@Test (priority=3, description=”testCaseFour”, dependsOnMethods=”testCaseTwo”))as shown below. The 4^th method is purposely kept empty, so that test may get skipped.

Class TestReporterInterface that implements IReporter interface

Class TestReporterReport that listens to class TestReporterInterface.

Output

When we run the TestReporterReportas TestNG test, we will obtain the following test reports.

Real-Time Console Report

Default Index.html

Default Emailable-report.html

Test Screenshot

While running the automation test suites using Selenium WebDriver, if defects are found then they are momentary and does not explain much of the details. In such case, it is desirable to take the screenshot which will capture all of the details of the defect. This helps the developer in bug analysis. Selenium WebDriver can take screenshots automatically with the help of class TakesScreenshot that is present in Selenium WebDriver API. In a similar way, we can generate PDF files as well.

Following is the demonstration of a test script in Java to take test screenshot of a website using WebDriver API.

Explanation of the test script

In the test script, the first and foremost step is to instantiate the Firefox WebDriver. After instantiation, such an object has the reference as ‘driver’.
With the help of this driver, object invoke and load the website URL. Here the URL under test is https://www.softwaretestingclass.com/
We have created a methodtakeSnapShot in the same class that accepts two arguments WebDriver instance and file path.
Inside this method, we are converting web driver object to TakeScreenshot with the following statement.

We are using the getScreenshotAs method of converted driver object in the last step. This accepts a single argument which is given as type FILE as shown below. It returns a file object.

In the next step, we are instantiating a file that accepts the local file path (here c://selenium_demo//screenshot.png”). This file object we are passing as an argument along with the file object returned in the last step to copy the screenshot file as shown below.

Output

When we will run the above test script, it will capture a full screenshot of the website home page located at URL https://www.softwaretestingclass.com/and will copy that screenshot PNG file to local drive (Path as“ c://selenium_demo//screenshot.png”). Shown below is the captured screenshot.

Conclusion

In this chapter, we are have learned to generate various kind of the test reports in the presentable format. Such as HTML, customized reports, PDF, email, and screenshots.

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