tests in line with problem specification
tests in line with problem specification

I noticed it was possible to have a solution which allowed years like 1800 to sneak through the current suite.  On reading https://github.com/exercism/problem-specifications/blob/master/exercises/leap/canonical-data.json (see also https://github.com/exercism/problem-specifications/commit/3134d31aeebf74374b7aaa11b6f35a8f80fa7b46) I realised our test data had drifted.
exercism/xracket