Define fixture 'restore_sqlite_database' that will be automatically used to restore the database before starting each test

app/test/conftest.py

@@ -1,4 +1,5 @@
 import pytest
+import sqlite3
 from selenium import webdriver
 
 @pytest.fixture
@@ -9,3 +10,17 @@ def URL():
 @pytest.fixture
 def driver():
     return webdriver.Edge()  # uncomment this line if you wish to run the test on your laptop
+
+
+@pytest.fixture(autouse=True)
+def restore_sqlite_database():
+    '''
+    Automatically restore SQLite database file app/db/wordfreqapp.db
+    using SQL statements from app/static/wordfreqapp.sql
+    '''
+    con = sqlite3.connect('../db/wordfreqapp.db')
+    with con:
+        con.executescript('DROP TABLE IF EXISTS user;')
+        con.executescript('DROP TABLE IF EXISTS article;')
+        con.executescript(open('../static/wordfreqapp.sql', encoding='utf8').read())
+    con.close()