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Coding · Grade 12

Tests, Profiling and Security Review

Before release, learners check their capstone three ways: a test strategy shaped like the test pyramid with an honest view of coverage; stronger tests through mutation thinking, property-based checks against an oracle and testsuite activities against hidden mutants; profiling to find real hot spots before optimising; and a defensive security review built on a simple threat model and a prioritised checklist.

  • 4 lessons
  • About 105 minutes
  • Check what you learned: 8 questions
  • Ways to answer: choose an answer, trace code, highlight a text, type a number, sort into groups and write tests
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What learners will discover

  • Design a layered test strategy (unit, integration, end-to-end) and interpret coverage honestly.
  • Strengthen tests with mutation thinking and property-based checks against an oracle.
  • Use profiles to find hot spots and estimate the benefit of optimising each part.
  • Conduct a defensive security review using assets, entry points, threats, mitigations and risk priority.

Lessons

  1. A test strategy 5 steps2 practiceabout 22 min
  2. Tests that find bugs 5 steps3 practiceabout 24 min
  3. Profiling: measure before optimising 5 steps3 practiceabout 20 min
  4. Security review 5 steps4 practiceabout 22 min
  5. Check what you learned 8 questions at the end

Keep exploring

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Guide for grown-ups