memory_diff.rb

# With get process mem Gem from Richard

class MemoryDiff
  class << self
    def print_usage_before_and_after(description)
      mem = GetProcessMem.new.mb
      puts "MEM:BEFORE:#{description.inspect} - MEMORY USAGE(MB): #{mem.round(2)}mb"
      yield
      after_mem = GetProcessMem.new.mb
      puts "MEM:AFTER:#{description.inspect} - MEMORY USAGE(MB): #{after_mem.round(2)}mb. Diff: #{display_diff(after_mem - mem)}"
    end

    private

    def display_diff(sum)
      if sum.positive?
        "⬆ +#{sum.round(2)}mb"
      elsif sum.negative?
        "⬇ #{sum.round(2)}mb"
      else
        "NO DIFF"
      end
    end
  end
end