feat(tests): increase test coverage to 98% (closes #29)

.coveragerc

@@ -0,0 +1,13 @@
+[run]
+source = app
+omit = 
+    init_db.py
+    */migrations/*
+    */__pycache__/*
+
+[report]
+exclude_lines =
+    pragma: no cover
+    def __repr__
+    raise NotImplementedError
+    if __name__ == .__main__.:

.github/workflows/test.yaml

@@ -57,10 +57,16 @@ jobs:
         FLASK_APP: app:create_app('app.config.config.Config')
         SECRET_KEY: test-key
       run: |
-        pytest tests/ --cov=app --cov-report=xml
+        pytest tests/ --cov=app --cov-report=xml --junitxml=junit.xml
 
-    - name: Upload coverage reports to Codecov
+    - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         slug: PPeitsch/TimeTrack
+
+    - name: Upload test results to Codecov
+      if: ${{ !cancelled() }}
+      uses: codecov/test-results-action@v1
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}

README.md

@@ -6,12 +6,11 @@
 [![Black](https://img.shields.io/badge/Code%20Style-Black-black.svg)](https://github.com/psf/black)
 [![GitHub license](https://img.shields.io/github/license/PPeitsch/TimeTrack.svg)](LICENSE)
 [![Contributions welcome](https://img.shields.io/badge/Contributions-welcome-brightgreen.svg)](CONTRIBUTING.md)
-[![Code coverage](https://img.shields.io/badge/Coverage-90%25-green.svg)](https://codecov.io/)
+[![codecov](https://codecov.io/gh/PPeitsch/TimeTrack/graph/badge.svg)](https://codecov.io/gh/PPeitsch/TimeTrack)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md)
 
 TimeTrack is a simple yet powerful time tracking application designed for managing work hours, leaves, and holidays. Built with Flask and compatible with PostgreSQL or SQLite, it provides a user-friendly interface for tracking your time and analyzing your work patterns.
 
-![TimeTrack Calendar View](https://via.placeholder.com/800x400?text=TimeTrack+Calendar+View)
 
 ## 🌟 Features
 
@@ -71,7 +70,7 @@ python init_db.py
 flask run
 ```
 
-7. Access the application at http://localhost:5000
+7. Access the application at `http://localhost:5000`
 
 ## 📖 Usage