Yann Braga | Storybook Vitest | ViteConf 2025
Because Storybook runs components in isolation with controls and props, you can visually verify layout changes (logo size, spacing). Then you can write tests for asserting “the logo size is greater than this”, “the slider has left arrow enabled after scroll”, “scrolling moves logos”, etc. This adds automated verification for UI behavior rather than requiring manual eyeballing, which further helps bridge the gap for end-to-end testing.