Variable assertions

With variable assertions, you can validate the value of a variable against an expected value. Some common use cases for variable assertions include:

• Modifying a variable with mathematical operations or JavaScript, then asserting that it equals the expected value. 
• Asserting on the expected value coming from a DataTable.
• Asserting on dynamic content that is not associated with an element on the page, such as the value of variable created from a custom JavaScript step.

Create and configure a variable assertion

In the mabl Trainer window, click on the check mark icon to add an assertion. Select Variable in the Trainer window.

In the variable assertion menu, define the criteria for your assertion:

• Variable: Select a variable from the dropdown.
• Assertion type: Choose an assertion type. Supported assertion types for variables include:
  •  Equals
  • Does not equal
  • Contains
  • Does not contain
  • Starts with
  • Does not start with
  • Ends with
  • Does not end with
  • Greater than
  • Less than
  • Greater than or equals
  • Less than or equals
• Expected value: When you select a variable, mabl displays its current value. You can edit this field as needed. To reference a variable, use mabl variable syntax: `{{@yourVar}}`.

Click OK to save and apply the variable assertion to your mabl test.