Flutter Testing Guide: Unit, Widget, and Integration — When to Use Each

Flutter Testing Guide: Unit, Widget, and Integration — When to Use Each Flutter gives you three test types. Knowing which to reach for—and when—is what makes testing feel useful rather than burdensome. Here's what I actually use in production. The Three Layers Unit Test: verify logic in isolation (milliseconds) Widget Test: verify UI behavior without a device (seconds) Integration Test: verify full user flows on an emulator (minutes) Build from the bottom up. Unit tests are your foundation. Inte