Tom O'Neill airport challenge

lib/airport.rb

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+require_relative 'plane'
+
+class Airport
+  attr_reader :stored_planes, :weather
+  CAPACITY = 5
+
+  def initialize 
+    @stored_planes = []
+    @capacity = CAPACITY
+    @weather = self.set_weather
+  end
+
+  def land(plane)
+    fail 'Airport full!' if full?
+    fail 'Cannot land - stormy weather!' if @weather == 'Stormy'
+    @stored_planes << plane
+  end
+
+  def depart(plane)
+    fail 'No planes' if empty?
+    fail 'Plane not in airport' if !@stored_planes.include?(plane)
+    @stored_planes.delete(plane)
+  end
+
+  def adjust_capacity(number)
+    @capacity = number
+  end
+
+  def set_weather
+    die = rand(100)
+    die > 100 ? 'Stormy' : 'Sunny'
+  end
+
+  private
+
+  attr_accessor :capacity
+
+  def full?
+    @stored_planes.length >= @capacity
+  end
+
+  def empty?
+    @stored_planes == []
+  end
+
+end

lib/plane.rb

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+class Plane
+end

spec/airport_spec.rb

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+require 'airport'
+
+describe Airport do
+
+  describe '#land' do
+    it 'Can do so' do
+      plane = Plane.new
+      expect(subject.land(plane)).to eq([plane])
+    end
+
+    it 'Will not do so if the airport is full' do
+      Airport::CAPACITY.times { subject.land(Plane.new) }
+      expect { subject.land(Plane.new) }.to raise_error 'Airport full!'
+    end
+
+  end
+
+  describe '#depart' do
+    it 'Can instruct a stored plane to take off from the airport' do
+      plane = Plane.new
+      subject.land(plane)
+      subject.depart(plane)
+      expect(subject.stored_planes).to eq []
+    end
+
+    it 'Will not do so if there are no planes in the airport' do
+      expect { subject.depart(Plane.new) }.to raise_error 'No planes'
+    end
+
+    it 'Will not take off if the plane is not in the airport' do
+      subject.land(Plane.new)
+      expect{subject.depart(Plane.new)}.to raise_error 'Plane not in airport'
+    end
+  end 
+
+  it 'can have an airport capacity that can be overwritten as appropriate' do
+    subject.adjust_capacity(1)
+    subject.land(Plane.new)
+    expect { subject.land(Plane.new) }.to raise_error 'Airport full!'
+  end
+
+  it 'has a default capacity' do
+    Airport::CAPACITY.times { subject.land(Plane.new) }
+    expect { subject.land(Plane.new) }.to raise_error 'Airport full!'
+  end
+
+  describe 'initialize' do
+    it 'will be stormy weather and the plane will not land' do
+      allow(subject).to receive(:set_weather).and_return('Stormy')
+      expect { subject.land(Plane.new) }.to raise_error 'Cannot land - stormy weather!'
+    end
+  end
+
+
+end

spec/plane_spec.rb

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+require 'plane'
+
+describe Plane do
+
+end