Flutter for Beginners

The testWidgets function

This function is the entry point of any widget test in Flutter:

void testWidgets(String description, WidgetTesterCallback callback, { bool skip: false, Timeout timeout })

We will be checking it in action using a few steps. First, let's check its signature:

• description: This helps to document the test; that is, it describes what widget features are being tested.
• callback : This is WidgetTesterCallback. This callback receives a WidgetTester instance so that we can interact with the widget and make our validations. This is the body of the test, where we write our test logic.
• skip: We can skip the test when running multiple tests by setting this flag.
• timeout: This is the maximum time the test callback can run.