add pytest

requirements.txt

@@ -29,6 +29,7 @@ grpcio-status==1.57.0
 html5lib==1.1
 httplib2==0.22.0
 idna==3.4
+iniconfig==2.0.0
 iso8601==2.0.0
 joblib==1.3.2
 kiwisolver==1.4.5
@@ -42,6 +43,7 @@ packaging==23.1
 pandas==2.0.3
 patsy==0.5.3
 Pillow==10.0.0
+pluggy==1.3.0
 proto-plus==1.22.3
 protobuf==4.24.0
 pyasn1==0.5.0
@@ -55,6 +57,7 @@ pypdf==3.15.4
 pypng==0.20220715.0
 PyQRCode==1.2.1
 pyserial==3.5
+pytest==7.4.4
 python-bidi==0.4.2
 python-dateutil==2.8.2
 pytz==2023.3