Implemented Comprehensive Testing Suite #114 Level 3

[preetidas60]

What kind of change does this PR introduce?

Feature - Comprehensive Testing Suite Implementation

Issue Number:

Fixes #114

Snapshots/Videos:

Summary

This PR implements a comprehensive testing suite to improve code quality and maintainability of the TextEditingApp. The current codebase had minimal test coverage with only a template widget_test.dart that didn't test actual functionality.

What this PR adds:

1. Unit Tests for Models (lib/tests/draw_model_test.dart, lib/tests/text_item_model_test.dart)

   • Tests for drawing model operations
   • Tests for text item model functionality
   • Validation of data models and their methods

2. State Management Tests (lib/tests/canvas_cubit_test.dart)

   • Comprehensive tests for Cubit operations
   • State transition validation
   • Canvas state management testing

3. Widget Tests (lib/tests/widgets_test.dart)

   • UI component testing
   • User interaction testing
   • Widget rendering validation

4. Updated Test Configuration

   • Modified pubspec.yaml to include necessary testing dependencies
   • Updated test/widget_test.dart with actual functional tests

Testing Coverage Includes:

• Canvas operations (drawing, text editing)
• State management (Cubit operations)
• UI interactions and user workflows
• Model data integrity
• Edge cases and error handling

Benefits:

• Improved code reliability
• Easier refactoring with confidence
• Better documentation through test cases
• Regression prevention
• Foundation for CI/CD integration

Does this PR introduce a breaking change?

No. This PR only adds testing infrastructure and does not modify any existing functionality or APIs.

Other information

Test Execution:

flutter test

Future Enhancements:

• Integration tests for complete workflows
• File operations testing (save/load)
• Performance testing
• Code coverage reporting

Dependencies Added:
The pubspec.yaml has been updated with testing dependencies. All dependencies are dev dependencies and won't affect the production build.

Have you read the contributing guide, README.md, code of conduct?

Yes

---

Checklist:

• Tests added/updated
• All tests pass locally
• Code follows project style guidelines
• Documentation updated (if needed)
• No breaking changes introduced

[github-actions]

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[may-tas]

@preetidas60, you need to follow the exact folder directory, as lib
You don't have to write widget tests in a single file.
You need to write unit and widget tests for a single file in the respective folder of test directory.
example : /test/cubit/canvas_cubit_test.dart and similarly like this.

[preetidas60]

@may-tas I have made the changes.

[may-tas]

@preetidas60 you don't need to write all widget tests inside widget_test.dart
Make respective file for each widget and write its test inside that file,
e.g test/ui/widgets/editable_text_widget_test.dart
Don't need to write tests for all the files, i will open separate issues for them, try to write for some of them atleast.

[may-tas]

@preetidas60 ?