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RED: Test exposing comma-delimited summation bug

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- Test expects '1,2' to return 3
- Currently returns 1 (missing last element)
- Summation loop has off-by-one: for (i < length - 1)
- Expected: <3>, Actual: <1>
- Expected: <6>, Actual: <3>
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fiatcode 2026-02-18 12:56:53 +07:00
parent 77d48e790a
commit ebaa21ca27
1 changed files with 10 additions and 0 deletions
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10
test/string_calculator_test.dart
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@ -17,5 +17,15 @@ void main() {
expect(calculator.add('5'), equals(5)); expect(calculator.add('5'), equals(5));
expect(calculator.add('42'), equals(42)); expect(calculator.add('42'), equals(42));
}); });
test('two comma-delimited numbers return sum', () {
expect(calculator.add('1,2'), equals(3));
expect(calculator.add('10,20'), equals(30));
});
test('multiple comma-delimited numbers return sum', () {
expect(calculator.add('1,2,3'), equals(6));
expect(calculator.add('5,10,15,20'), equals(50));
});
}); });
} }