[Solved] Find the bug in this Ruby test double code snippet:user = double('user') allow(user).to receive(:email).and_return('test@example.com') puts user.email_address | Ruby

Ruby - Testing with RSpec and Minitest

Find the bug in this Ruby test double code snippet:

user = double('user')
allow(user).to receive(:email).and_return('test@example.com')
puts user.email_address

AThe <code>and_return</code> value must be a number

BDouble name must be a symbol, not a string

CThe <code>allow</code> method cannot be used with doubles

DMethod <code>email_address</code> is not stubbed, causing an error

Step-by-Step Solution

Solution:

Step 1: Check stubbed method
Only email is stubbed to return a string.
Step 2: Check method called
The code calls user.email_address, which is not stubbed, so it raises an error.
Final Answer:
Method email_address is not stubbed, causing an error -> Option D
Quick Check:
Unstubbed method call = error [OK]

Quick Trick: Stub every method you call on a double [OK]

Common Mistakes:

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