Implementing Dart and Flutter Test Coverage

Contents

• Testing Fundamentals
• Coverage Directives
• Workflow: Configuring and Generating Coverage Reports
• Workflow: Advanced Manual Coverage Collection
• Examples

Testing Fundamentals

Structure your test suites using the standard Dart testing paradigms. Use package:test for Dart projects and flutter_test for Flutter projects.

• Unit Tests: Verify individual functions, methods, or classes.
• Component/Widget Tests: Verify component behavior, layout, and interaction using mock objects (package:mockito).
• Integration Tests: Verify entire app flows on simulated or real devices.

Coverage Directives

Exclude specific lines, blocks, or entire files from coverage metrics using inline comments. Pass the --check-ignore flag during formatting to enforce these directives.