Prevent ResourceWarnings after test runs

eg
ResourceWarning: unclosed database in <sqlite3.Connection object at 0x10ce1f010>

Author: samuelhwilliams

flask_admin/tests/geoa/conftest.py

@@ -5,10 +5,15 @@
 
 
 @pytest.fixture
-def db():
+def db(app):
     db = SQLAlchemy()
+
     yield db
 
+    with app.app_context():
+        db.session.close()
+        db.engine.dispose()
+
 
 @pytest.fixture
 def admin(app, babel, db):

flask_admin/tests/peeweemodel/conftest.py

@@ -5,10 +5,14 @@
 
 
 @pytest.fixture
-def db():
+def db(app):
     db = peewee.SqliteDatabase(":memory:")
+
     yield db
 
+    with app.app_context():
+        db.close()
+
 
 @pytest.fixture
 def admin(app, babel, db):

flask_admin/tests/sqla/conftest.py

@@ -23,8 +23,13 @@ def db(app):
     app.config["SQLALCHEMY_ECHO"] = True
     app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
     db = SQLAlchemy(app)
+
     yield db
 
+    with app.app_context():
+        db.session.close()
+        db.engine.dispose()
+
 
 @pytest.fixture
 def postgres_db(app):
@@ -35,8 +40,13 @@ def postgres_db(app):
     app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
 
     db = SQLAlchemy(app)
+
     yield db
 
+    with app.app_context():
+        db.session.close()
+        db.engine.dispose()
+
 
 @pytest.fixture
 def admin(app, babel, db):