FileHasher 'hash' method throwing error with Padrino Framework

[vs37559]

Describe the bug
When including Coverband in a Padrino(built over Sinatra) application, then it gives error about wrong number of arguments being passed into the method, however from the stack trace it seems the Ruby is trying to call some internal 'hash' method/variable which is seemingly overriden here.

Traceback (most recent call last):

23: from /Users/developer/.rvm/gems/ruby-2.7.3@project/bin/ruby_executable_hooks:22:in `<main>'
22: from /Users/developer/.rvm/gems/ruby-2.7.3@project/bin/ruby_executable_hooks:22:in `eval'
21: from /Users/developer/.rvm/gems/ruby-2.7.3@project/bin/padrino:23:in `<main>'
20: from /Users/developer/.rvm/gems/ruby-2.7.3@project/bin/padrino:23:in `load'
19: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/bin/padrino:9:in `<top (required)>'
18: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/thor-1.2.1/lib/thor/base.rb:485:in `start'
17: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/thor-1.2.1/lib/thor.rb:392:in `dispatch'
16: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/thor-1.2.1/lib/thor/invocation.rb:127:in `invoke_command'
15: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/thor-1.2.1/lib/thor/command.rb:27:in `run'
14: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/cli/launcher.rb:25:in `start'
13: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/cli/launcher.rb:25:in `require'
12: from /Users/developer/Documents/eps/project/config/boot.rb:68:in `<top (required)>'
11: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/loader.rb:57:in `load!'
10: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/loader.rb:152:in `require_dependencies'
 9: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/loader.rb:152:in `each'
 8: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/loader.rb:154:in `block in require_dependencies'
 7: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/reloader.rb:93:in `safe_load'
 6: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/reloader/storage.rb:25:in `prepare'
 5: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/reloader/storage.rb:65:in `object_classes'
 4: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/reloader/storage.rb:65:in `each'
 3: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/reloader/storage.rb:65:in `each_object'
 2: from /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/padrino-core-0.15.3/lib/padrino-core/reloader/storage.rb:71:in `block in object_classes'
 1: from /Users/developer/.rvm/rubies/ruby-2.7.3/lib/ruby/2.7.0/set.rb:339:in `add'
 /Users/developer/.rvm/gems/ruby-2.7.3@project/gems/coverband-5.2.5/lib/coverband/utils/file_hasher.rb:8:in `hash': wrong number of arguments (given 0, expected 1) (ArgumentError)`

To Reproduce
Steps to reproduce the behavior:

1. Create one basic application with Padrino Framework (any example app would do)
2. Add Coverband as per Sinatra requirements (as a middleware)
3. Try booting the server
4. See error

Expected behavior
Server/Console should start without any errors

Libraries:

• Ruby: 2.7.3
• Padrino: 0.15.3
• Sinatra: 2.2.4

Additional context
I have tried renaming the above method and the application was working as expected but I am trying to avoid maintaining a fork just for a simple rename.

Current Solution
Maintain a fork of the gem and rename the 'hash' method with 'hash_file' maybe. Application starts to work as expected.

[danmayer]

OK, applied this change @vs37559 note that you are running 2.7.3 and I am dropping Ruby 2.7.x in the next coverband release... so you might still need a fork if you aren't upgrading your Ruby version soon.

8d2eb0f