Design comprehensive OA test cases
Overview
This question evaluates a candidate's ability to design systematic, repeatable test cases including edge-case identification, quick input/result generation, oracle construction, and coverage assessment, reflecting competencies in software testing, verification, and quality assurance.
Hudson River Trading
Sep 6, 2025, 12:00 AM
Software Engineer
Technical Screen
Behavioral & Leadership
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Designing Your Own Test Cases in an Online Assessment
Context
You are taking a technical online assessment that provides very few example tests and expects you to create your own. You need a systematic, repeatable way to design tests that surface logic errors and edge cases quickly.
Prompt
Describe how you would:
- Create a repeatable checklist of edge-case categories applicable to most algorithm/data-structure problems.
- Quickly generate inputs and compute expected outputs.
- Compare your solution against a reference answer (oracle), including when you must write the oracle yourself.
- Decide when coverage is sufficient (e.g., after creating 5–10 curated cases).
Solution
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