added test coverage report

.gitignore

@@ -3,6 +3,7 @@ data/
 *env
 *.code-workspace
 sandbox/
+htmlcov
 .vscode/
 *.pytest_cache/
 *.egg-info/

requirements.txt

@@ -1,5 +1,6 @@
 attrs==22.1.0
 beautifulsoup4==4.11.1
+coverage==6.5.0
 greenlet==1.1.2
 iniconfig==1.1.1
 packaging==21.3
@@ -9,6 +10,7 @@ py==1.11.0
 PyMySQL==1.0.2
 pyparsing==3.0.9
 pytest==7.1.3
+pytest-cov==4.0.0
 python-dotenv==0.20.0
 soupsieve==2.3.2.post1
 SQLAlchemy==1.4.39