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Exercise tests accept incorrect solutions

Some exercises pass their tests with wrong solutions, such as filters that hide errors, hardcoded match values, or threads that never share state.

Tier II · Emerging Problems that are still building up.

3 public reports · first reported 7 October 2024 · last reported 16 February 2025

Idea report · $9 · No contacts · All sales final

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What's going wrong

Learners found that some exercises pass their tests even when the code is wrong.

AI-assisted: written with the help of AI from the reports. The idea report has the full summary.

In the idea report

  • The full summary.
  • The products the 3 reports are about, and how many came each month.
  • Related problems.

No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.