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ISTQB Certified Tester Foundation Level (CTFL) v4.0 · ISTQB
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Functional testing ensures that the system behaves according to its specified requirements. In this case, the requirement describes how the system should compute the car’s position using a mathematical equation. Functional testing verifies that the system correctly calculates the new position based on the given formula (new_distance_traveled + old_position) and produces the expected output for different inputs. Testers would create test cases with various values for new_distance_traveled and old_position to confirm that the system consistently computes the correct position.