Quadrilaterals

Quadrilaterals.rb

module Equilateral
    def assign_sides(a)
    @side1 = a
    @side2 = a
    @side3 = a
    @side4 = a
    end

    def equilateral_sidelength
        @side1
    end
end

class Quadrilateral

    def initialize(a, b, c, d)
        @side1 = a
        @side2 = b
        @side3 = c
        @side4 = d
    end

    def perimeter
        @side1 + @side2 + @side3 + @side4
    end

end

class Trapezoid < Quadrilateral
end

class Parallelogram < Quadrilateral
    def initialize(a,b)
        @side1 = a
        @side2 = b
        @side3 = a
        @side4 = b
    end
end

class Rhombus < Parallelogram
    include Equilateral
    
    def initialize(a)
        assign_sides(a)
    end
end

class Rectangle < Parallelogram
def area
    @side1 * @side2
end
end

class Square < Rectangle
    include Equilateral
    
    def initialize(a)
        assign_sides(a)
    end
end

def test_quadrilateral
    quad = Quadrilateral.new(1,2,3,4)
    puts quad.perimeter == 10
end

def test_trapezoid
    trap = Trapezoid.new(2,3,4,5)
    puts trap.perimeter == 14
    puts trap.is_a? Quadrilateral
end

def test_parallelogram
    para = Parallelogram.new(6,3)
    puts para.perimeter == 18
    puts para.is_a? Quadrilateral
end

def test_rhombus
    rhom = Rhombus.new(6)
    puts rhom.perimeter == 24
    puts rhom.equilateral_sidelength == 6
    puts rhom.is_a? Parallelogram
    puts rhom.is_a? Quadrilateral
end

def test_rectangle
    rect = Rectangle.new(4,9)
    puts rect.perimeter == 26
    puts rect.area == 36
    puts rect.is_a? Parallelogram
    puts rect.is_a? Quadrilateral
end

def test_square
    squa = Square.new(2)
    puts squa.perimeter == 8
    puts squa.area == 4
    puts squa.equilateral_sidelength == 2
    puts squa.is_a? Rectangle
    puts squa.is_a? Parallelogram
    puts squa.is_a? Quadrilateral
end

def test_all
    test_quadrilateral
    test_trapezoid
    test_parallelogram
    test_rhombus
    test_rectangle
    test_square
end

test_all