Gather tests about multiple extensions to a class
Remove unneccessary line
Break fast
Call #super in #setup of subclass
Remove tests for #find_zip_file_and_inner_path
Add a test for file in subdirectory
[REFACTORING]Change signature of #find_zip_file_and_inner_path for later refactoring
[REFACTORING]Change signature of #find_existing_file_with_extension for later improvement
Add a test about fallback of extension