A TestDome test is a short skills test made of auto-graded coding tasks and other question types, each with its own timer. You cannot go back once a question is submitted or its timer ends, which makes time management the main skill. This page covers what the TestDome test is, its format and timings, how it is scored, the rules to know before you start, how to prepare and a practice plan.
What the TestDome test is
TestDome provides tests for many languages and job skills, plus public practice tests. Employers build tests from its question library and set point values and pass marks.
Format and timings
| Part | What it involves | Time and questions |
|---|---|---|
| Live coding tasks | Run your code against test cases as often as you like; your best run is kept | Each question has its own timer |
| Multiple choice and multiple correct | Knowledge questions; wrong picks can deduct on multiple-correct items | Per-question timer |
| Other types | Fill-in-the-blank, file upload, writing tests, text and recorded answers | Per-question timer |
Total: employer-set, with a maximum of 40 questions or 4 hours per test; TestDome recommends under 2 hours.
How it is scored
- Coding tasks earn credit for the share of test cases passed.
- Multiple-correct questions can give partial credit but deduct for wrong choices.
- Employers set point values and pass marks.
Rules to know before you start
- You cannot go back once you submit or a timer ends.
- Online documentation is allowed, but AI tools such as ChatGPT are not, and proctoring can flag them.
- Employers can re-invite the same email address; there is no candidate retake policy.
How to prepare
- Budget time question by question, because there is no going back.
- Run the tests repeatedly; your best run counts.
- Use documentation for syntax if allowed, but do not use AI tools.
- Practice with TestDome's free public tests for your language.
A practice plan
- Day 1: read the platform's candidate guide and try its practice environment.
- Days 2 to 4: two timed problems a day in your test language, writing your own edge-case tests.
- Day 5: one full mock under the real time limit.
- Day 6: review mistakes and the input and output rules.
- Day 7: take the test in one sitting with a stable connection.
Related guides: what an online assessment is, the HackerRank assessment guide, the CodeSignal assessment guide.
On the day, and the mistakes to avoid
- Check the platform, the allowed languages and the time limit in the invitation.
- Try the practice environment or tutorial so the editor and run buttons are not new.
- Use a reliable computer on a stable connection, with other apps and tabs closed.
- Read every problem before starting, and do the quickest ones first.
- Write and run your own edge-case tests before submitting.
- Keep a few minutes at the end to check output formats and resubmit if needed.
Mistakes that cost candidates:
- Writing an elegant solution that fails large hidden tests because of its complexity.
- Mismatched output formats: extra spaces, prompts or debug prints.
- Spending most of the time on one hard problem while easier points go unclaimed.
- Pasting code you did not write, which integrity settings can flag.
- Not reading the input limits, so a solution that works on samples times out.
What happens after the TestDome test
If you pass, the next stage is usually a technical interview, and some interviewers ask about your assessment solution. Be ready to explain your approach and its complexity out loud, and prepare two or three behavioral stories for the conversations that follow. For the next stage, see software engineer behavioral answers.
Where CoPilot Interview fits
Online assessments are tests you take on your own: outside help is not allowed, and proctoring settings can flag other apps, tab switches or a second voice. Practice beforehand instead. CoPilot Interview is an AI interview assistant; its free AI mock interview prepares you for the interviews that follow the assessment, with questions built from your résumé and the job description and each spoken answer scored out of ten. The free plan gives 15 minutes a day of live help in sessions of up to 15 minutes, with AI mock interviews included. Read the invitation carefully and follow your employer's rules.
Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly.
Frequently asked questions
Can I use Google during a TestDome test?
TestDome allows online documentation but not AI tools such as ChatGPT. Check the employer's instructions.
Can I go back to a previous question?
No. Once you submit an answer or its timer runs out, you move on.
Does my best run count?
Yes, for coding tasks: your highest-scoring run is kept.
How long is a TestDome test?
The employer decides, up to 40 questions or 4 hours; TestDome recommends keeping tests under 2 hours.
Can I use AI tools during the TestDome test?
No, unless the instructions explicitly allow it. Assessments are meant to be taken on your own, and proctoring settings can flag other apps, tab switches or pasted code. Use AI tools to practice beforehand, and follow your employer's rules.
Practice this interview before the real one
The AI mock interview builds questions from your resume and the job description, reads them aloud and scores each spoken answer out of 10. Included on the free plan.
Start a mock interview