Variables are a powerful feature in Momentic that allow you to store and reuse data across your tests. They can be used to store values like user credentials, URLs, or any other data that you want to reference multiple times in your tests.

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Environment variables

All variables are stored on a global object env that is accessible from any step in your test. You can access these variables using the templating syntax {{ env.VARIABLE_NAME }}.

Reserved variables:

  • BASE_URL: The base URL of the environment. This is automatically set when you create a new environment and can be used to construct URLs for your tests.
  • CURRENT_URL: The current URL of the page being tested. This is updated automatically as you navigate through your test.
  • ENV_NAME: The name of the environment. This is also automatically set when you create a new environment and can be used to identify the environment in your tests.

You can add any number of key-value pairs as environment variables when you create a new environment in Momentic. Any tests that you create using that environment will have access to these variables.

If you’re using the Momentic CLI, you can also load environment variables from a .env or JSON file.

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Setting variables

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setVariable

You can use JavaScript steps to set variables using the setVariable function.

setVariable("USERNAME", "testuser");
setVariable("PASSWORD", Math.random().toString(36).substring(2, 15));

This will set the USERNAME variable to testuser and the PASSWORD variable to a random string. You can then access these variables in other steps using the templating syntax {{ env.USERNAME }} or {{ env.PASSWORD }}.

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Save to environment variable

For steps that can have a return value such as AI extract or JavaScript, there’s an option on the step that allows you to input a string key to set on the environment. After this step is executed you will be able to access the variable using {{ env.NUM_BUTTONS }}.

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Accessing variables

Variables can be accessed using JavaScript. You can use it directly inside JavaScript steps or by using the templating syntax {{ }}. All input fields support the templating syntax.

For example, if you have set a variable named USERNAME, you can access it like this:

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Module parameters

Module parameters are also variables. If you have a module parameter named API_KEY, you can access it using {{ env.API_KEY }}.

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Variable scope

Variables in Momentic tests all live on the global test scope, which means they are accessible from any step in the test. This allows you to set a variable in one step and use it in another step later in the test.