Replace test case - "invalid character in isbn". #1217
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petertseng merged 2 commits intoexercism:masterfrom Mar 30, 2018
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Replace test case - "invalid character in isbn". #1217petertseng merged 2 commits intoexercism:masterfrom
petertseng merged 2 commits intoexercism:masterfrom
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Set new test case to be 3-598-P1581-X. It should avoid solutions to pass - when inside characters (P) is treat 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.
petertseng
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Thank you. Good change.
Before this can be Approved, please do two things:
- Change the version in this file from 2.2.0 to 2.3.0 so that versioning systems know the file has changed.
- In the commit message and in the pull request description, use a word in https://help.github.com/articles/closing-issues-using-keywords/ to indicate you have closed #1212, otherwise the issue won't get closed.
Increased version number. Closes exercism#1212
dnicolaev
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@petertseng thanks for pointing me to what should be done. |
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I verified: the incorrect implementation https://github.com/petertseng/exercism-problem-specifications/blob/verify/exercises/isbn-verifier/verify.rb#L76-L82 now incorrectly accepts this case (a correct impl must reject), therefore this test case is now useful.
Given that:
- there is automated verification
- we had agreement in the linked issue that this is a useful case to add. The discussion has been open for 48 hours.
- it's my good-faith belief that the replaced test case added no value; it has been present without additional comment in #924
My judgment is that there is no further need to wait; let's merge it now
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Great job, thank you. |
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…st (#670) 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
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Set new test case to be 3-598-P1581-X.
It should avoid solutions to pass - when inside characters (P) is treat 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.
Closes #1212