Serialization · interview question

If you wrote a test around csv parsing, what should the test prove first?

Multiple choiceEasychapter-4-curatedpremiumserializationcsv-parsing

python

import csv

with open("orders.csv", newline="", encoding="utf-8") as handle:
    rows = list(csv.DictReader(handle))
print(rows[:1])

Delay clarity until production traffic reveals the edge case and then patch it under pressure.Solve the symptom with comments only and avoid changing the code shape around csv parsing.Keep csv parsing implicit so the script stays short and hope the next engineer infers the rule.That the rule behaves correctly at the boundary cases the lesson is trying to make explicit.

Answer and explanation

Correct answer

D. That the rule behaves correctly at the boundary cases the lesson is trying to make explicit.

Why

Good tests make the design safer to change because they lock in the meaningful behavior rather than surface-level implementation details.

Test yourself on Serialization

A free test with instant, explained results. No account needed.

Start free test

All Serialization questions →

If you wrote a test around csv parsing, what should the test prove first?

Correct answer

Why

More Serialization questions