emergencies_dispatch_test.rb

require 'test_helper'

class EmergenciesDispatchTest < ActionDispatch::IntegrationTest
  def setup
    super

    setup_fire
    setup_police
    setup_medical
  end

  def setup_fire
    post '/responders/', responder: { type: 'Fire', name: 'F-101', capacity: 1 }
    post '/responders/', responder: { type: 'Fire', name: 'F-102', capacity: 2 }
    post '/responders/', responder: { type: 'Fire', name: 'F-103', capacity: 3 }
    post '/responders/', responder: { type: 'Fire', name: 'F-104', capacity: 4 }
    post '/responders/', responder: { type: 'Fire', name: 'F-105', capacity: 5 }
    patch '/responders/F-101', responder: { on_duty: true }
    patch '/responders/F-103', responder: { on_duty: true }
    patch '/responders/F-104', responder: { on_duty: true }
  end

  def setup_police
    post '/responders/', responder: { type: 'Police', name: 'P-101', capacity: 1 }
    post '/responders/', responder: { type: 'Police', name: 'P-102', capacity: 2 }
    post '/responders/', responder: { type: 'Police', name: 'P-103', capacity: 3 }
    post '/responders/', responder: { type: 'Police', name: 'P-104', capacity: 4 }
    post '/responders/', responder: { type: 'Police', name: 'P-105', capacity: 5 }
    patch '/responders/P-102', responder: { on_duty: true }
    patch '/responders/P-103', responder: { on_duty: true }
    patch '/responders/P-104', responder: { on_duty: true }
    patch '/responders/P-105', responder: { on_duty: true }
  end

  def setup_medical
    post '/responders/', responder: { type: 'Medical', name: 'M-101', capacity: 1 }
    post '/responders/', responder: { type: 'Medical', name: 'M-102', capacity: 2 }
    post '/responders/', responder: { type: 'Medical', name: 'M-103', capacity: 3 }
    post '/responders/', responder: { type: 'Medical', name: 'M-104', capacity: 4 }
    post '/responders/', responder: { type: 'Medical', name: 'M-105', capacity: 5 }
    patch '/responders/M-101', responder: { on_duty: true }
    patch '/responders/M-102', responder: { on_duty: true }
    patch '/responders/M-103', responder: { on_duty: true }
  end

  test 'POST /emergencies/ will dispatch just one responder, if that responder can handle the emergency completely' do
    post '/emergencies/', emergency: { code: 'E-00000001', fire_severity: 3, police_severity: 0, medical_severity: 0 }
    json_response = JSON.parse(body)

    assert_equal(['F-103'], json_response['emergency']['responders'].sort)
    assert(json_response['emergency']['full_response'])
  end

  test 'POST /emergencies/ will dispatch just enough resources for an emergency' do
    post '/emergencies/', emergency: { code: 'E-00000001', fire_severity: 3, police_severity: 12, medical_severity: 1 }
    json_response = JSON.parse(body)

    assert_equal(['F-103', 'M-101', 'P-103', 'P-104', 'P-105'], json_response['emergency']['responders'].sort)
    assert(json_response['emergency']['full_response'])
  end

  test 'POST /emergencies/ will dispatch all resources for an emergency that exceeds on-duty resources' do
    post '/emergencies/', emergency: {
      code: 'E-00000001', fire_severity: 99, police_severity: 99, medical_severity: 99
    }

    json_response = JSON.parse(body)

    assert_equal(
      ['F-101', 'F-103', 'F-104', 'M-101', 'M-102', 'M-103', 'P-102', 'P-103', 'P-104', 'P-105'],
      json_response['emergency']['responders'].sort
    )
    refute json_response['emergency']['full_response']
  end

  test 'POST /emergencies/ will dispatch NO resources for an emergency with severities that are all zero' do
    post '/emergencies/', emergency: { code: 'E-00000001', fire_severity: 0, police_severity: 0, medical_severity: 0 }
    json_response = JSON.parse(body)

    assert_equal([], json_response['emergency']['responders'].sort)
    assert json_response['emergency']['full_response']
  end
end