assert - Momentic

The agent inspects the current page state and returns whether the assertion holds. Use for semantic checks that are awkward to express as a CSS selector or substring match. For visual-first checks whose condition is fully visible in the current viewport, prefer assertVisually.

Parameters

Parameter	Type	Required	Description
`that`	`string`	Yes	What must be true on the page.
`timeout`	`number`	No	Maximum time in milliseconds to wait for the assertion to hold.
`iframe`	`string`	No	URL or URL pattern of the iframe that contains the target element.
`saveAs`	`string`	No	Name of the variable to write this step’s return value to.
`retries`	`number`	No	Number of times to retry the step on failure before failing the test.
`skipped`	`boolean`	No	Skip this step at execution time.

Shorthand

Assertion text as a single string.

- assert: vue is selected

Examples

- assert:
    that: |
      the AI action step (the topmost step on the left, with goal text about
      clicking the Visible Button) has a green check icon next to it
      indicating the step succeeded
    timeout: 90000

- assert:
    that: |
      the only step in the test (an AI_EXTRACT step) has a green check icon
      next to it indicating the step succeeded
    timeout: 60000

- assert:
    that: |
      there is a message saying file upload finished

Use softAssert with the same parameters to record an assertion failure and continue in a browser test. See the soft assertions guide for version requirements and stopping behavior.

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