Question

Below is the unit test I wrote for a small piece of Ruby code.

subject { AutoShop.new 'Mr. Fix It', 'WA987654321', Employee.new('Sue', 'Owner', 0) }

it '#employee_list returns list of employee names' do
  # setup
  input = [Employee.new('Lou', 'Receptionist', 90_000)]
  subject.append_employees input
  subject.employee_list.should eq "Sue\nLou"
end

And here is the code for the class. However, I cannot get the names to display properly in the employee_list method. I’m brand new to Ruby, so any suggestions would be greatly appreciated.

class AutoShop < Business

    attr_accessor :employees

  def initialize(name, tax_id, employee)
    super(name, tax_id)
    @employees = []
    @employees << employee
  end   

  def append_employees(input)
    input.map { |x| @employees << x  }  
  end

  def employee_list
    @employees.map {|x| x.name}
  end   

end     

Answer 1

Your employee_list method, based on your unit test, should output each name separated by a linebreak \n. So, add a .join("\n") to produce a string from the array.

def employee_list
  @employees.map {|x| x.name }.join("\n")
end  

The .map can be done with a “pretzel-colon” shorthand too:

@employees.map(&:name).join("\n")