Start getting unit tests passing again

Signed-off-by: Clinton Wolfe <clintoncwolfe@gmail.com>

lib/inspec/input_registry.rb

@@ -49,7 +49,7 @@ module Inspec
         raise error, "Profile '#{error.profile_name}' does not have any inputs"
       end
 
-      unless list[profile].key?(name)
+      unless inputs_by_profile[profile].key?(name)
         error = Inspec::InputRegistry::InputLookupError.new
         error.input_name = name
         error.profile_name = profile
@@ -144,6 +144,8 @@ module Inspec
     def bind_inputs_from_metadata(profile_obj, profile_metadata_obj)
       # TODO: move this into a core plugin
       # TODO: add deprecation stuff
+      return if profile_metadata_obj.nil? # Metadata files are technically optional
+
       if profile_metadata_obj.params.key?(:attributes) && profile_metadata_obj.params[:attributes].is_a?(Array)
         profile_metadata_obj.params[:attributes].each do |input|
           input_options = input.dup

lib/inspec/profile.rb

@@ -121,8 +121,8 @@ module Inspec
       # The AttributeRegistry is in charge of keeping track of inputs;
       # it is the single source of truth. Now that we have a profile object,
       # we can create any inputs that were provided by various mechanisms.
-      Inspec::AttributeRegistry.bind_profile_inputs(
-        profile: self, # Every input only exists in the context of a profile
+      Inspec::InputRegistry.bind_profile_inputs(
+        self, # Every input only exists in the context of a profile
         # Remaining args are possible sources of inputs
         # TODO: deprecation checks throughout
         cli_attr_files: options[:attrs],
@@ -594,7 +594,7 @@ module Inspec
         f = load_rule_filepath(prefix, rule)
         load_rule(rule, f, controls, groups)
       end
-      params[:inputs] = @runner_context.inputs
+      params[:inputs] = Inspec::InputRegistry.list_inputs_for_profile(@profile_id)
       params
     end