Testing Dart and Flutter Applications

Contents

• Structuring Test Files
• Writing Tests
• Executing Tests
• Test Implementation Workflow
• Examples

Structuring Test Files

Organize test files to mirror the lib directory structure to maintain predictability.

• Place all test code within the test directory at the root of the package.
• Append _test.dart to the end of all test file names (e.g., lib/src/utils.dart should be tested in test/src/utils_test.dart).
• If writing integration tests, place them in an integration_test directory at the root of the package.

Writing Tests

Utilize package:test as the standard testing library for Dart applications.

• Import package:test/test.dart (or package:flutter_test/flutter_test.dart for Flutter).