CheckSplitter Test

checksplitter.rb

# Build a CheckSplitter class.
class CheckSplitter 
  # total_cost_of_meal  - float, cost of meal without tip
  # tip_percentage      - float, tip percentage or decimal
  # num_people          - integer, number of guests
  def initialize(total_cost_of_meal, tip_percentage, num_people)
    @total_cost_of_meal = total_cost_of_meal
    @tip_percentage = tip_percentage
    @num_people = num_people
  end
  
  #determine how much each person owes
  #return a decimal value for how much each person owes
  def even_split
    meal_plus_tip / @num_people
  end
  
  # calculates meal + tip value in one step
  def meal_plus_tip
    @total_cost_of_meal * (tip_as_decimal + 1)
  end
  
  # compensates for the possibility of user entering tip in decimal form
  # converts tip_percentage to decimal form if necessary
  def tip_as_decimal
    if @tip_percentage >= 1
      tip_as_decimal = @tip_percentage / 100.0
    else
      tip_as_decimal = @tip_percentage
    end
  end
  
end

checksplitter_test.rb

require "minitest/autorun"
require_relative "checksplitter.rb"

class CheckSplitterTest < Minitest::Test
  # One of my specs is that the even_split method should divide the 
  # meal_plus_tip amount evebly among the attendees
  #
  # Another spec is that the meal_plus_tip method should calculate the 
  # tip amount based on user input and add that amount to the meal total
  #
  # Another spec is that the tip_as_decimal method should calculate the 
  # tip amount in decimal form
  
  def test_even_split
    # meal_plus_tip / @num_people
    check1 = CheckSplitter.new(100, 20, 2)
    assert_equal(60, check1.even_split)
  end
  
  def test_meal_plus_tip
    # @total_cost_of_meal * (tip_as_decimal + 1)
    check1 = CheckSplitter.new(100, 20, 2)
    assert_equal(120, check1.meal_plus_tip)
  end

  def test_tip_as_decimal
    #if @tip_percentage >= 1
      #tip_as_decimal = @tip_percentage / 100.0
    #else
      #tip_as_decimal = @tip_percentage
    #end
    check1 = CheckSplitter.new(100, 20, 2)
    assert_equal(0.2, check1.tip_as_decimal)
    
    check2 = CheckSplitter.new(100, 0.2, 2)
    assert_equal(0.2, check2.tip_as_decimal)
  end
  
end