Tim's Airport Challenge

lib/airport.rb

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+require 'airport'
+require 'plane'
+
+class Airport
+
+  attr_accessor :hanger
+
+  def initialize(capacity = 5)
+
+    @capacity = capacity
+    @hanger = []
+
+  end
+
+  def random_weather
+
+    rand(10)
+
+  end
+
+  def can_take_off?
+
+    if random_weather <= 3
+      fail "It's blowin' a gale out there, hold your horses"
+    end
+
+  end
+
+  def take_off(plane)
+
+    if @hanger.include?(plane)
+      @hanger.delete(plane)
+    else
+      fail "That plane is not available for take off"
+    end
+
+  end
+
+  def can_land?
+
+    if random_weather <= 3
+      fail "It's blowin' a gale out there, hold your horses"
+    end
+
+  end
+
+  def land(plane)
+
+    if full?
+      fail "The airport is full, please wait"
+    elsif @hanger.include?(plane)
+      fail "That plane has already landed"
+    else
+      @hanger << plane
+    end
+
+  end
+
+  def full?
+
+    @hanger.count >= @capacity
+
+  end
+
+end

lib/plane.rb

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+require 'airport'
+require 'plane'
+
+class Plane
+
+end

spec/airport_spec.rb

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+require 'airport'
+require 'plane'
+
+describe Airport do
+
+  it "lands plane when instructed" do
+
+    plane = Plane.new
+    subject.land(plane)
+    expect(subject.hanger).to include plane
+
+  end
+
+  it "takes off from airport when instructed, and is no longer at the airport" do
+
+    plane = Plane.new
+    subject.hanger << plane
+    subject.take_off(plane)
+    expect(subject.hanger).not_to include plane
+
+  end
+
+  it "checks whether the airport hanger is full" do
+
+    plane = Plane.new
+    5.times { subject.hanger << plane }
+    expect(subject.full?).to eq true
+
+  end
+
+  it "prevents landing when the aiport hanger is full" do
+
+    plane = Plane.new
+    5.times { subject.hanger << plane }
+    expect { subject.land(plane) }.to raise_error("The airport is full, please wait")
+
+  end
+
+  it "prevents take off when weather is stormy" do
+
+    plane = Plane.new
+    allow(subject).to receive(:random_weather) { 3 }
+    expect { subject.can_take_off? }.to raise_error("It's blowin' a gale out there, hold your horses")
+
+  end
+
+  it "prevents landing when weather is stormy" do
+
+    plane = Plane.new
+    allow(subject).to receive(:random_weather) { 3 }
+    expect { subject.can_land? }.to raise_error("It's blowin' a gale out there, hold your horses")
+
+  end
+
+  it "random_weather should generate a random number between 1 and 10" do
+
+    expect(subject.random_weather).to be < 11
+    expect(subject.random_weather).to be > 0
+
+  end
+
+  it "attempting to take off a plane that isn't present should raise an error" do
+
+    plane = Plane.new
+    expect { subject.take_off(plane) }.to raise_error("That plane is not available for take off")
+
+  end
+
+  it "attempting to land a plane that has already landed should raise an error" do
+
+    plane = Plane.new
+    subject.hanger << plane
+    expect { subject.land(plane) }.to raise_error("That plane has already landed")
+
+  end
+
+end

spec/plane_spec.rb

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+require 'airport'
+require 'plane'
+
+describe Plane do
+
+  it "Instances of Plane should be true" do
+
+    plane = Plane.new
+    expect(plane).to eq plane
+
+  end
+
+end