def client(app):
"""
Instantiates an instance of the flask test_client and Test database
this provides a test_client to each test which allows access
to the Http request and response also
initializes a in memory test_database
for tests
:return flask test_client
:rtype: object
:param app: Flask_application test configuration
:type app: object
"""
# setup
with app.app_context():
test_database = db_wrapper.database
db_wrapper.init_app(app)
test_database.connect()
Todo.bind_ctx(test_database)
Todo.create_table()
yield app.test_client()
# teardown
test_database.close()
def create_app(test_config=None):
"""
This is an application factory pattern
essentially a function that defines the application,
loads defined configurations initializes the database file,
and registers blue printsthat hold logic for api endpoints,
:var
app: flask application
database: Sqlite database object
:rtype: object: Flask application,
"""
# Flask app defined
# config files are relative to the instance folder
app = Flask(__name__, instance_relative_config=True)
# register blueprints for that hold logic for endpoints
app.register_blueprint(todo_api)
# database assignment at runtime
app.config.from_mapping(
DATABASE=SqliteDatabase(os.path.join(app.instance_path, 'todo.db')))
# holds value of actual database
database = db_wrapper.database
# FlaskDB database initialization
# bind models and create tables
# close the database connection
with app.app_context():
db_wrapper.init_app(app)
database.connect(reuse_if_open=True)
Todo.bind(database)
Todo.create_table(safe=True)
database.close()
try:
# creates instance dir
os.makedirs(app.instance_path)
except OSError:
pass
if test_config is None:
# load the instance config, if it exists, when not testing
app.config.from_pyfile('dev_config.py', silent=True)
else:
# load the test config if passed in this case test/conftest
app.config.update(test_config)
#test route and route to angular app
@app.route('/hello')
def hello_world():
"""test route"""
return 'Hello World'
# this route Angular front end
@app.route('/')
def my_todo():
return render_template('index.html')
return app
