[Solved] How can you simulate a JSON POST request with Flask's test client? — Ans: client.post('/api', json={'key': 'value'}) | Flask

Flask - Testing Flask Applications

How can you simulate a JSON POST request with Flask's test client?

Aclient.post('/api', json={'key': 'value'})

Bclient.post('/api', data='{"key": "value"}')

Cclient.post('/api', form={'key': 'value'})

Dclient.post('/api', headers={'Content-Type': 'text/plain'})

Step-by-Step Solution

Solution:

Step 1: Recall JSON request simulation
Flask test client supports a json parameter to send JSON data with correct headers.
Step 2: Identify correct usage
client.post('/api', json={'key': 'value'}) uses json={'key': 'value'}, which automatically sets content-type and encodes JSON.
Final Answer:
client.post('/api', json={'key': 'value'}) -> Option A
Quick Check:
Use json= param to send JSON POST requests [OK]

Quick Trick: Use json= dict to send JSON data with test client POST [OK]

Common Mistakes:

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How can you simulate a JSON POST request with Flask's test client?