Enhancing LiveView Tests with Custom Attributes

The article emphasizes that as LiveView applications become complex, relying on CSS selectors tied to the HTML structure can lead to brittle tests. To avoid this issue, it recommends using `data-test-` attributes, which provide a more flexible way to identify elements without being affected by changes in the HTML structure. The author cites a successful approach from Phoenix LiveView that allows for these attributes to be stripped in production without additional runtime overhead, utilizing a macro that generates these attributes only in non-production environments. A sample macro is provided that can be used to add these attributes dynamically, and examples of how these attributes can make tests resilient to changes in markup are demonstrated.