I don't remember whether I pointed this out when Stefan originally wrote that code:
[[[ * subversion/tests/libsvn_fs/fs-test.c (filename_trailing_newline): Switch from a blacklist approach to to a whitelist approach, for defining backends that don't implement the API correctly. ]]] Index: subversion/tests/libsvn_fs/fs-test.c =================================================================== --- subversion/tests/libsvn_fs/fs-test.c (revision 1498385) +++ subversion/tests/libsvn_fs/fs-test.c (working copy) @@ -4959,10 +4959,11 @@ filename_trailing_newline(const svn_test_opts_t *o svn_error_t *err; svn_boolean_t allow_newlines; - /* Some filesystem implementations can handle newlines in filenames - * and can be white-listed here. - * Currently, only BDB supports \n in filenames. */ - allow_newlines = (strcmp(opts->fs_type, "bdb") == 0); + /* The FS API wants \n to be permitted, but FSFS never implemented that, + * so for FSFS we expect errors rather than successes in some of the commits. + * Use a blacklist approach so that new FSes default to implementing the API + * as originally defined. */ + allow_newlines = (!!strcmp(opts->fs_type, SVN_FS_TYPE_FSFS)); SVN_ERR(svn_test__create_fs(&fs, "test-repo-filename-trailing-newline", opts, pool)); For clarity, I'd be fine with adding FSX to the blacklist here.