tests/test_file_extension.nit

   1 print "foo.txt".file_extension.as(not null)
   2 print "foo.c".file_extension.as(not null)
   3 print ".txt".file_extension.as(not null)
   4 print "my.file.txt".file_extension.as(not null)
   5 print "my.".file_extension.as(not null)
   6 print "file".file_extension == null