1 files changed, 17 insertions, 4 deletions
diff --git a/spec/ruby/core/kernel/instance_variables_spec.rb b/spec/ruby/core/kernel/instance_variables_spec.rb
index f744ee3c7a..677d8bb7b2 100644
--- a/spec/ruby/core/kernel/instance_variables_spec.rb
+++ b/spec/ruby/core/kernel/instance_variables_spec.rb
@@ -1,15 +1,17 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "Kernel#instance_variables" do
   describe "immediate values" do
     it "returns an empty array if no instance variables are defined" do
-      0.instance_variables.should == []
+      [0, 0.5, true, false, nil].each do |value|
+        value.instance_variables.should == []
+      end
     end
 
     it "returns the correct array if an instance variable is added" do
       a = 0
-      lambda{ a.instance_variable_set("@test", 1) }.should raise_error(RuntimeError)
+      ->{ a.instance_variable_set("@test", 1) }.should raise_error(RuntimeError)
     end
   end
 
@@ -23,5 +25,16 @@ describe "Kernel#instance_variables" do
       a.instance_variable_set("@test", 1)
       a.instance_variables.should == [:@test]
     end
+
+    it "returns the instances variables in the order declared" do
+      c = Class.new do
+        def initialize
+          @c = 1
+          @a = 2
+          @b = 3
+        end
+      end
+      c.new.instance_variables.should == [:@c, :@a, :@b]
+    end
   end
 end