[Solved] Identify the error in this test code:client = app.test_client() response = client.get('/dashboard') print(response.data)The test fails with a UnicodeDecodeError when printing response.data. | Flask

Flask - Testing Flask Applications

Identify the error in this test code:

client = app.test_client()
response = client.get('/dashboard')
print(response.data)

The test fails with a UnicodeDecodeError when printing response.data.

Aresponse.data is bytes; decode() is needed before printing

Btest_client() must be called with arguments

CGET method is not allowed on '/dashboard'

Dresponse.data is None and cannot be printed

Step-by-Step Solution

Solution:

Step 1: Understand response.data type
response.data returns bytes, which may cause decode errors if printed raw.
Step 2: Fix printing by decoding bytes
Use response.data.decode() to convert bytes to string before printing.
Final Answer:
response.data is bytes; decode() is needed before printing -> Option A
Quick Check:
Decode response.data bytes before printing [OK]

Quick Trick: Decode bytes response.data before printing [OK]

Common Mistakes:

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