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How to Easily Understand and Use Loops Within Testim

What are Loops? Loops are one of the most powerful concepts in programming and sometimes could be a little hard…

By Testim,

What are Loops?

Loops are one of the most powerful concepts in programming and sometimes could be a little hard to understand. At Testim, we made it easier for users to use Loops in their tests; by building it within the framework itself. This means, the user does not need to write code to repeat a group of steps a certain number of times.

Why do we need Loops?

Loops are useful when we need to repeat an action several times in our test.

For example –  Say we want to check whether the “Post” button on Twitter works consistently. We could have a scenario where we want to click the button 50 times to ensure it works consistently without any problems. In this scenario, are we going to record 50 steps to click the button 50 times or just record the step once and repeat it 50 times?

This is where Loops can be our best friend. It helps in repeating an action several times without needing to repeat the steps again and again. As a result, we save a lot of time in test authoring and execution.

How to use Loops?

Loops could still be a little hard concept to grasp. So here is a quick tip on how to easily use loops within Testim.

Let’ say we have the below code

for(i = 1; i < 4; i++) {

//Steps to repeat 3 times

}

What we are doing here is –

  • We are initializing a variable “i” to be equal to 1 before the loop starts. This is our Iterator.
  • We are specifying a condition to repeat the steps a certain number of times by giving “i<4”. In this case we want to repeat a set of actions 3 times.
  • Each time we exit a loop we need to increment our Iterator. In this case, we are doing “i++” which will increment the variable i from 1 to 2, 2 to 3 and 3 to 4. Then, eventually we exit the loop when i = 4, as we have a condition which checks to see if i<4 (Remember 4 is NOT LESS than 4 but EQUAL)

The same logic applies to Loops in Testim as well. Where we have 3 steps –

Step 1 – Initialize the Iterator

Step 2 – Specify a condition to repeat the steps a number of times

Step 3 – Increment the Iterator

This is what we do in this Demo Example, where we-

 

STEP 1Initialize the Iterator

 

STEP 2Specify a condition to repeat the steps a number of times

  • Group the steps to be repeated in one single reusable component
  • Go to the Properties Panel and add Custom code
  • Give condition to repeat the group a certain number of times

 

STEP 3Increment the Iterator

  • Add a custom action as the last step inside the newly created group
  • Increment the Iterator

 

The same steps applies to any set of actions you may want to repeat using our Loops functionality. You can also use do…while loops which follows similar concepts.

Also remember, Testim supports loops based on element conditions apart from just custom code.

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