Overview

Introduces an automated test execution workflow to the CI/CD pipeline for the Flutter-based morse code encoding application.

What Changed

Added .github/workflows/test.yml, a GitHub Actions workflow that automatically runs the Flutter test suite:

• Triggers on push and pull_request events to the main branch
• Runs on ubuntu-latest with Flutter 3.22.2 (stable channel)
• Executes three sequential steps: checkout, Flutter setup, dependency installation, and test execution

Security & Robustness Observations

Strengths:

• Pinned action versions (actions/checkout@v3, subosito/flutter-action@v2) and Flutter version (3.22.2) ensure reproducible builds and mitigates supply chain risks
• Sensitive credentials are not exposed in the test workflow
• Complements the existing release workflow with quality checks upstream

Gaps from a Robustness Perspective:

• No test failure gates: The workflow runs tests but lacks explicit enforcement—test failures don't block the release pipeline. The release workflow can still execute even if tests fail, potentially shipping broken code
• No dependency caching: Dependencies are reinstalled on every run, increasing build time and CI costs
• Missing test configuration details: Runs flutter test with no flags—lacks visibility into coverage metrics, timeouts, platform-specific test variants, or detailed failure reporting
• No workflow dependencies: Both test and release workflows operate independently; there's no explicit requirement that tests must pass before release attempts
• No failure notifications/insights: Beyond GitHub checks, there's no alerting mechanism for test failures

Context

The project contains two test files (morse_codec_test.dart, widget_test.dart) in the test directory, and pubspec.yaml declares flutter_test and flutter_lints as dev dependencies, confirming the testing infrastructure exists and is now being automated.