Remove pretend-nils

lib/aruba/console.rb

@@ -43,7 +43,7 @@ def initialize
         end
 
         def inspect
-          "nil"
+          "aruba console"
         end
       end
 

lib/aruba/cucumber/command.rb

@@ -320,7 +320,7 @@
 end
 
 Then(/^the exit status should( not)? be (\d+)$/) do |negated, exit_status|
-  last_command_started.stop if last_command_stopped.nil?
+  last_command_started.stop if last_command_stopped.empty?
 
   if negated
     expect(last_command_stopped).not_to have_exit_status exit_status.to_i

lib/aruba/matchers/command/have_exit_status.rb

@@ -18,33 +18,27 @@
 #     end
 RSpec::Matchers.define :have_exit_status do |expected|
   match do |actual|
-    @old_actual = actual
+    actual.stop
+    @actual_exit_status = actual.exit_status
 
-    @old_actual.stop
-    @actual = actual.exit_status
-
-    unless @old_actual.respond_to? :exit_status
-      raise "Expected #{@old_actual} to respond to #exit_status"
-    end
-
-    values_match? expected, @actual
+    values_match? expected, @actual_exit_status
   end
 
   failure_message do |actual|
     format(
       %(expected that command "%s" has exit status of "%s", but has "%s".),
-      @old_actual.commandline,
+      actual.commandline,
       expected.to_s,
-      actual.to_s
+      @actual_exit_status.to_s
     )
   end
 
   failure_message_when_negated do |actual|
     format(
       %(expected that command "%s" does not have exit status of "%s", but has "%s".),
-      @old_actual.commandline,
+      actual.commandline,
       expected.to_s,
-      actual.to_s
+      @actual_exit_status.to_s
     )
   end
 end

lib/aruba/platforms/command_monitor.rb

@@ -15,7 +15,7 @@ class CommandMonitor
     attr_reader :registered_commands, :last_command_started, :last_command_stopped
 
     class DefaultLastCommandStopped
-      def nil?
+      def empty?
         true
       end
 
@@ -29,7 +29,7 @@ def respond_to_missing?(*)
     end
 
     class DefaultLastCommandStarted
-      def nil?
+      def empty?
         true
       end
 

lib/aruba/processes/basic_process.rb

@@ -130,6 +130,10 @@ def arguments
         []
       end
 
+      def empty?
+        false
+      end
+
       private
 
       def truncate(string, max_length)