Why testing matters in Flask - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flask testing client.

Flask

from flask import Flask
app = Flask(__name__)
client = app.[1]()

Drag options to blanks, or click blank then click option'

Atest_client

Bstart

Cdebug

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' instead of 'test_client' to create the testing client.

The test_client() method creates a testing client to simulate requests to the Flask app.

2fill in blank

medium

Complete the code to check the response status code in a test.

Flask

response = client.get('/')
assert response.[1] == 200

Drag options to blanks, or click blank then click option'

Astatus_code

Bcontent

Ctext

Djson

Attempts:

3 left

💡 Hint

Common Mistakes

Checking 'content' or 'text' instead of 'status_code' for the response status.

The status_code attribute holds the HTTP status code returned by the server.

3fill in blank

hard

Fix the error in the test function to use the correct Flask test client method.

Flask

def test_homepage():
    response = client.[1]('/home')
    assert response.status_code == 200

Drag options to blanks, or click blank then click option'

Apost

Bfetch

Crequest

Dget

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'fetch' or 'request' which are not Flask test client methods.

The get method is used to simulate a GET request in Flask tests.

4fill in blank

hard

Fill both blanks to create a test that posts JSON data and checks the response.

Flask

response = client.[1]('/submit', json=[2])
assert response.status_code == 201

Drag options to blanks, or click blank then click option'

Apost

B{'name': 'Alice'}

C{'age': 30}

Dget

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'get' instead of 'post' for sending data.

Use post to send data and a JSON dictionary as the payload.

5fill in blank

hard

Fill all three blanks to write a test that sends data, checks JSON response, and asserts a key.

Flask

response = client.[1]('/api/data', json=[2])
data = response.[3]()
assert 'result' in data

Drag options to blanks, or click blank then click option'

Apost

B{'query': 'test'}

Cget_json

Djsonify

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'jsonify' instead of 'get_json' to parse response.

Use post to send data, a JSON dictionary as payload, and get_json() to parse the response JSON.