isbn-verifier 2.3.0.4: Use an otherwise-valid ISBN in invalid char test #670
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Set new test case to be 3-598-P1581-X. This will actually catch incorrect solutions - when invalid characters (P) are treated as 0. 3 * 10 + 5 * 9 + 9 * 8 + 8 * 7 + 0 * 6 + 1 * 5 + 5 * 4 + 8 * 3 + 1 * 2 + 10 * 1 = 264 264 is divisible by 11. The previous case did NOT have this property: 3 * 10 + 5 * 9 + 9 * 8 + 8 * 7 + 2 * 6 + 0 * 5 + 5 * 4 + 0 * 3 + 7 * 2 + 0 * 1 = 249 249 is NOT divisible by 11. exercism/problem-specifications#1212 exercism/problem-specifications#1217
petertseng
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Set new test case to be 3-598-P1581-X.
This will actually catch incorrect solutions - when invalid characters (P) are treated as 0.
3 * 10 + 5 * 9 + 9 * 8 + 8 * 7 + 0 * 6 + 1 * 5 + 5 * 4 + 8 * 3 + 1 * 2 + 10 * 1 = 264
264 is divisible by 11.
The previous case did NOT have this property:
3 * 10 + 5 * 9 + 9 * 8 + 8 * 7 + 2 * 6 + 0 * 5 + 5 * 4 + 0 * 3 + 7 * 2 + 0 * 1 = 249
249 is NOT divisible by 11.
exercism/problem-specifications#1212
exercism/problem-specifications#1217