Robust Programs: Testing, Test Data & The "Full-Line" Rule | OCR J277

Welcome back to our OCR GCSE Computer Science (J277) revision series! Today, we are conquering Unit 2.4: Robust Programs. We look at how to protect your code from "The Human Factor" using structured test data and validation. We will use an interactive testing simulator to cover: - The 4 Types of Test Data: Normal, Boundary, Invalid, and Erroneous. - The Test Plan: How to construct a perfect test table for your exam, including Expected Outcomes and Reasons. - The "Full-Line" Rule: A massive Section B exam trap! Why describing a fix will score you zero marks, and what you MUST do instead. - Challenge Zone: We step into Examiner Audit Mode to live-mark a student's Test Plan and Syntax Error definitions.