Testing: Cambridge IGCSE practice

A program accepts ages from 13 to 19 inclusive. Which of these is boundary test data?

1. 15
2. 19
3. "abc"
4. 50

This code tests a validation function with some test data. What does it print?

def valid_mark(m):
    return 0 <= m <= 50

for test in [25, 0, 50, 51, -1]:
    print(test, valid_mark(test))

A program accepts whole numbers from 1 to 100 inclusive. Which of these is extreme test data?

1. 100
2. 101
3. 50
4. abc