[Feature]: Add global option to specify strictness of ARIA snapshots

[cpAdm]

🚀 Feature Request

Add configuration option for strictness of toMatchAriaSnapshot

Example

export default defineConfig({
  expect: {
    toMatchAriaSnapshot: {
      children: 'deep-equal', // Or 'contain' (default) or 'equal'
    },
  },'
  ...
}

Motivation

Currently by default only specified children of ARIA snapshots are checked if they are present in order (- /children: contain).

However, in my practice I almost always use equal since e.g. for tables I really want to make sure no extra rows/columns are present. It would be nice to configure this strictness globally in the playwright config.

[terradek]

Second this. It's a very useful feature when ARIA snapshot sets grow over time. Often, AI removes this strictness in order to fix the test.

[lukpsaxo]

Adding this would solve this: #36442

Its my two frustrations with aria snapshots - it doesn't fail when new content is added and you can't snapshot actual values, all numbers get turned into regexp's