Logging method calls

class A
  def a
    b
  end

  def b
    c
  end

  def c
    puts "Hello World"
  end
end

set_trace_func proc { |event, file, line, id, binding, classname|
  if event != "call" || file[/\/spec\//].nil?
    nil
  else
    printf "%8s %s:%-2d %10s %8s\n", event, file, line, id, classname
  end
}

A.new.a

set_trace_func nil

event | path_to_file                                                                | method | class

call /Users/kacperpucek/tailored.to/spec/use_cases/create_product_spec.rb:14          a        A
call /Users/kacperpucek/tailored.to/spec/use_cases/create_product_spec.rb:18          b        A
call /Users/kacperpucek/tailored.to/spec/use_cases/create_product_spec.rb:22          c        A

http://apidock.com/ruby/Kernel/set_trace_func