Contents

# START:header
require "spec_helper"

describe HueColoredBulb do
  let(:bulb_name) { 'Bloom' }
  subject { described_class.new(bulb_name) }
  # END:header

  # START:basics
  it 'can turn on and off' do
    subject.on!
    subject.off!
  end

  it 'has a list of colors' do
    actual = subject.colors
    expect(actual.first).to eq('red')
    expect(actual).to include('azure')
  end

  context 'setting a color' do
    it 'can be colored cyan' do
      expect{subject.set_color 'cyan'}.to_not raise_error
    end

    it 'cannot be colored burnt sienna' do
      expect{subject.set_color 'burnt_sienna'}.to raise_error(ArgumentError)
    end
  end
  # END:basics

  # START:math
  context 'color hue estimations' do
    it 'has red at 0 hue' do
      actual = subject.hue_for_color 'red'
      expect(actual).to eq(0)
    end

    it 'has green at approximately 21k hue' do
      actual = subject.hue_for_color 'green'
      # absolute value of hue_for_color('green') should be within 1000
      # of the 21,000 approximation specified here.
      delta = (actual - 21000).abs
      expect(delta < 1000).to be_truthy
    end

    it 'has blue at approximately 44k hue' do
      actual = subject.hue_for_color 'blue'
      delta = (actual - 44000).abs
      expect(delta < 1000).to be_truthy
    end
  end
  # END:math

  # START:demo
  context 'color wheel demo' do
    it 'displays each color exactly once' do
      n = subject.colors.count
      expect(subject.light).to receive(:hue=).exactly(n).times
      subject.demo(0.0001)
    end
  end
  # END:demo
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
lita-hue-lightswitch-1.0.0	spec/lita/handlers/hue_colored_bulb_spec.rb