Spec Vehicle. Add a method missing for vehicle properties.

lib/tesla_api/vehicle.rb

@@ -9,10 +9,20 @@ def initialize(api, email, id, vehicle)
       @vehicle = vehicle
     end
 
+    # Properties
+
     def [](key)
       vehicle[key]
     end
 
+    def method_missing(name)
+      if vehicle.keys.include?(name.to_s)
+        vehicle[name.to_s]
+      else
+        raise NoMethodError.new("Vehicle does not have property `#{name}`", name)
+      end
+    end
+
     # State
 
     def mobile_enabled

spec/lib/tesla_api/vehicle_spec.rb

@@ -0,0 +1,23 @@
+require 'spec_helper'
+
+RSpec.describe TeslaApi::Vehicle do
+  let(:tesla_api) { TeslaApi::Client.new(ENV["TESLA_EMAIL"], ENV["TESLA_PASS"], ENV["TESLA_CLIENT_ID"], ENV["TESLA_CLIENT_SECRET"]) }
+
+  subject(:vehicle) { tesla_api.vehicles.first }
+
+  describe "#[]", vcr: { cassette_name: "vehicle" } do
+    it "contains the vehicle name" do
+      expect(vehicle["display_name"]).to eq("Nikola")
+    end
+  end
+
+  describe "#method_missing", vcr: {cassette_name: "vehicle"} do
+    it "doesn't provide dynamic methods for nonexistent properties" do
+      expect{vehicle.gas_level}.to raise_exception(NoMethodError)
+    end
+
+    it "provides a dynamic method for the display_name" do
+      expect(vehicle.display_name).to eq("Nikola")
+    end
+  end
+end

spec/spec_helper.rb

@@ -6,6 +6,8 @@
 require 'tesla_api'
 
 Dotenv.load
+
+Coveralls::Output.silent = true
 Coveralls.wear!
 
 VCR.configure do |c|