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16. Validate elements using Assert mechanism



As we've learnt in the previous post that assert will check whether the element is on the page, if it is not  available, the test will fail the step and wont continue executing the remaining steps.

The following steps will show how assert mechanism validates elements:

Example: Check whether the Google Logo is available on the www.Google.com page. (i.e. The test will pass if the Google Logo exists on the Google page else it fails).

1. Launch Selenium IDE from Firefox Browser -> Tools Menu
2. Ensure that the Selenium IDE is launched and also ensure that 'Record' option is enabled by default.
3. Type www.google.com in the Firfox Address bar and press 'Enter' button on the keyboard
4. Ensure that the Google page is displayed in the Firefox Browser
5. In Google Page, right click on the UI element to be validated i.e Google Logo in this example as shown below:



6. In the right click menu options, select 'Show All Available commands' option as shown below:


7. Ensure that the sub-menu option for the 'Show All Available commands' option is displayed and select 'AssertElementPresent' option as shown below:



8. In Selenium IDE -> Table tab, ensure that assertElementPresent element is added as shown below:


9. Click on the 'Record' button to turn off the recording process as shown below:


10. Playback or Run the above recorded validation, by click on the 'Play current test case' option on the Selenium IDE as shown below:



11. After the test Run, ensure that the 'assertElementPresent' command under the Selenium IDE -> Table tab is displayed in Green color (i.e.Green means the step got passed and the UI element is  present i.e. Google Logo in this example is present on the Google Page)  as shown below:



12. If the element is not present (i.e. Google Logo in this example), then the step will  fail and displayed in red color as shown below:


13. If in case the test fails as shown in the step 12, all the steps to be executed after the failed step wont be executed

Note: - Assert commands in the right click menu and sub-menu options wont be shown if Selenium IDE is not installed on the Firefox browser




Please comment below to feedback or ask questions.

How to validate elements using Verify mechanism will be explained in the next post



8 comments:

pns said...

While checking Assert and Verify commands using the testcase mentioned in the posts I added another step after Assert and Verify. The step is to search the text Selenium. When I playback these 2 test cases for Assert and Verify, the following error is being displayed in common - [error] Element link=Selenium - Web Browser Automation not found

The above error message is common to both the Assert and Verify testcases. I have following 2 questions.

(1) What does this error message mean
(2) Though the Assert testcase returned this error I assumed that as the next step is not executed, the testcase failed. However, I am not sure why the Verify testcase failed when it is supposed to run successfully.

Can you please let me know. Thanks

Arun Motoori said...

@pns - Please find the answers for your questions below:

Q1- What does this error message mean
Answer - It means that Selenium IDE is not able to locate the 'Selenium - Web Browser Automation' link after search.

Q2- Why the verify test case failed when it is supposed to run successfully
Anser - Selenium IDE is trying to click verify whether the 'Selenium - Web Browser Automation' link is present on the Search Results page before the above link got loaded on the 'Search Results' page. In other words Selenium IDE is too fast in executing the recorded steps.

How to solve this problem?
Answer - On the Selenium IDE window, we have an option to change the execution speed, select it to be slow as explained in the below screenshot and playback. Your problem will be solved.

Click Here to view this Screenshot

pns said...

Thanks for the answers. In either case (Assert and verify) passed. Isn't it supposed not to execute the next step in Assert test case> Please clarify as it is little bit confusing may be I am missing something

Arun Motoori said...

@pns - Different between Assert and Verify

Assert - When Statement containing Assert command fails, then all the steps after the statement wont get executed.

But

Verify - When statement containing verify command fails, then all the steps after the statement will get executed.

Ranjan said...

Sir,

It would be good you show how assert mechanism failed :)
It would be kickass !!

Arun Motoori said...

@Ranjan - Shown in the same page. Thanks :)

Kavi pawar said...

Hello,

I tried passed test case. Then I opened yahoo.com and tried to run the test case it should be fail but it goes to google.com and displays test pass.

Girish Kumar said...

Hi Arun,

On right click of the google logo, i did not see Show All Available commands option.

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