How can you ensure a let variable is re-evaluated before each test when using before hooks that modify it?

hard📝 Application Q9 of 15

Ruby - Testing with RSpec and Minitest

How can you ensure a let variable is re-evaluated before each test when using before hooks that modify it?

AUse <code>let!</code> to force eager evaluation before each test

BReassign the variable inside the before hook

CUse instance variables instead of let

DCall the let variable inside the before hook to reset it

Step-by-Step Solution

Solution:

Step 1: Understand let! behavior
let! forces the variable to be evaluated eagerly before each test, not lazily.
Step 2: Compare with other options
Reassigning inside before creates local variables; instance variables are different; calling let inside before does not reset memoization.
Final Answer:
Use let! to force eager evaluation before each test -> Option A
Quick Check:
let! = eager evaluation before tests [OK]

Quick Trick: Use let! to evaluate before each test eagerly [OK]

Common Mistakes:

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