Additional Matchers

In addition to findsOneWidget, flutter_test provides additional
matchers for common cases.

findsNothing

Verifies that no widgets are found.

findsWidgets

Verifies that one or more widgets are found.

findsNWidgets

Verifies that a specific number of widgets are found.

matchesGoldenFile

Verifies that a widget’s rendering matches a particular bitmap image (“golden file” testing).

Complete example

Mock dependencies using Mockito

Find widgets