SECTION 40 / 48
A Unit Test Catches a Bug
Forgetting the + replaces the count instead of adding to it. The second addition produces 10 instead of 20, causing AssertionError: 10 != 20. Fix the addition and all tests pass.
Forgetting the + replaces the count instead of adding to it. The second addition produces 10 instead of 20, causing AssertionError: 10 != 20. Fix the addition and all tests pass.