[rb] fix bug preventing processing of Chrome profile

rb/lib/selenium/webdriver/chrome/profile.rb

@@ -27,12 +27,11 @@ module Chrome
       class Profile
         include ProfileHelper
 
-        attr_reader :directory
-
         def initialize(model = nil)
           @model = verify_model(model)
           @extensions = []
           @encoded_extensions = []
+          @directory = nil
         end
 
         def add_extension(path)
@@ -45,6 +44,10 @@ def add_encoded_extension(encoded)
           @encoded_extensions << encoded
         end
 
+        def directory
+          @directory || layout_on_disk
+        end
+
         #
         # Set a preference in the profile.
         #

rb/spec/unit/selenium/webdriver/chrome/options_spec.rb

@@ -217,6 +217,16 @@ module Chrome
             expect(options.as_json).to eq("browserName" => "chrome", "goog:chromeOptions" => {"foo" => "bar"})
           end
 
+          it 'converts profile' do
+            profile = Profile.new
+            directory = profile.directory
+
+            opts = Options.new(profile: profile)
+            expect(opts.as_json).to eq('browserName' => 'chrome',
+                                       'goog:chromeOptions' =>
+                                         {'args' => ["--user-data-dir=#{directory}"]})
+          end
+
           it 'returns a JSON hash' do
             allow(File).to receive(:file?).and_return(true)
             allow_any_instance_of(Options).to receive(:encode_extension).with('foo.crx').and_return("encoded_foo")