Wine Glass Homework 1

wine_glass.rb

# Make the existing tests pass.
# Add 2 more tests and methods for: 
## 1. Another print method for material, volume, and stem_length all together
## 2. A method that calculates and returns the percent of the glass that is full when you pass in the 
###   volume of liquid in the glass. 
###   This calculation is: (volume_passed_to_method / volume_of_wine_glass) * 100

class WineGlass
	attr_accessor :material, :volume, :stem_length, :volume_of_wine
	def pretty_print_material
		"Material : #{self.material}"
	end

	def pretty_print_stuff 
		"This wine glass is cool. It has a stem length of #{self.stem_length} and a volume of #{self.volume}ml" 
	end

    def pretty_print_all
    	"This is a #{self.material} wine glass with a stem length of #{self.stem_length} and a volume of #{self.volume}ml"
    end

    def pretty_print_wine_remaining
        "Amount of wine remaining : #{(self.volume_of_wine.to_f / self.volume.to_f * 100).to_i}%"
    end
end

require 'minitest/autorun'

class TestWineGlass < MiniTest::Unit::TestCase

	def setup
		@wg = WineGlass.new
                @wg.material = 'wood'
                @wg.volume = 650
                @wg.stem_length = 5
                @wg.volume_of_wine = 300
	end

	def test_that_wine_glasses_have_volume
		assert_respond_to @wg, :volume
	end

	def test_that_wg_has_a_pretty_print_for_material
		assert_equal "Material : #{@wg.material}", @wg.pretty_print_material
	end

	def test_wg_pretty_prints_stem_length_and_volume
		assert_equal "This wine glass is cool. It has a stem length of 5 and a volume of 650ml", @wg.pretty_print_stuff
	end

	def test_that_wg_has_a_pretty_print_method_for_material_volume_and_stem_length
        assert_equal "This is a wood wine glass with a stem length of 5 and a volume of 650ml", @wg.pretty_print_all 
    end

    def test_how_much_wine_is_left_in_the_glass
    	assert_equal "Amount of wine remaining : #{(@wg.volume_of_wine.to_f / @wg.volume.to_f * 100).to_i}%", @wg.pretty_print_wine_remaining
    end
end