Function expectDocumentTitleContains

expectDocumentTitleContains(page: any, titleKey: string): Promise<void>
Asserts that the document title contains the expected substring. Supports fixtures for reusable title values.
Parameters
- page: any
- titleKey: string
Returns Promise<void>
Example
```
Then I pw see document title contains "Website"
```
- Defined in backend/assertions/document.ts:34