Element Identification
UI Coverage uniquely identifies elements across views and snapshots using a combination of HTML attributes, location, and other signals in the DOM. Stable and unique identifiers are crucial for accurately tracking and de-duplicating elements throughout the various snapshots captured in your tests.
Significant attributes for identification​
Certain attributes are prioritized by UI Coverage for element identification and grouping. These include:
- data-cy
- data-test
- data-testid
- data-test-id
- data-qa
- row-id
- id
- name
By using these attributes consistently in your application, you can improve the accuracy of UI Coverage tracking.
Configuring element identification​
Attribute filters​
Exclude irrelevant or dynamically generated attributes to reduce noise in UI Coverage reports. For example:
{
  "uiCoverage": {
    "attributeFilters": [
      {
        "attribute": "id",
        "value": ":r.*:",
        "include": false
      }
    ]
  }
}
Learn more about attribute filtering in the Attribute Filters guide.
Significant attributes​
Define custom significant attributes to prioritize specific selectors that align with your application’s structure. For example:
{
  "uiCoverage": {
    "significantAttributes": ["data-custom-id"]
  }
}
Refer to the Significant Attributes guide for detailed instructions.