1 files changed, 8 insertions, 20 deletions
diff --git a/spec/ruby/core/module/prepend_features_spec.rb b/spec/ruby/core/module/prepend_features_spec.rb
index 6f341804d1..3a50f2c2a4 100644
--- a/spec/ruby/core/module/prepend_features_spec.rb
+++ b/spec/ruby/core/module/prepend_features_spec.rb
@@ -1,9 +1,9 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "Module#prepend_features" do
   it "is a private method" do
-    Module.should have_private_instance_method(:prepend_features, true)
+    Module.private_instance_methods(false).should.include?(:prepend_features)
   end
 
   it "gets called when self is included in another module/class" do
@@ -23,21 +23,9 @@ describe "Module#prepend_features" do
   end
 
   it "raises an ArgumentError on a cyclic prepend" do
-    lambda {
+    -> {
       ModuleSpecs::CyclicPrepend.send(:prepend_features, ModuleSpecs::CyclicPrepend)
-    }.should raise_error(ArgumentError)
-  end
-
-  it "copies own tainted status to the given module" do
-    other = Module.new
-    Module.new.taint.send :prepend_features, other
-    other.tainted?.should be_true
-  end
-
-  it "copies own untrusted status to the given module" do
-    other = Module.new
-    Module.new.untrust.send :prepend_features, other
-    other.untrusted?.should be_true
+    }.should.raise(ArgumentError)
   end
 
   it "clears caches of the given module" do
@@ -64,13 +52,13 @@ describe "Module#prepend_features" do
 
   describe "on Class" do
     it "is undefined" do
-      Class.should_not have_private_instance_method(:prepend_features, true)
+      Class.private_instance_methods(true).should_not.include?(:prepend_features)
     end
 
     it "raises a TypeError if calling after rebinded to Class" do
-      lambda {
+      -> {
         Module.instance_method(:prepend_features).bind(Class.new).call Module.new
-      }.should raise_error(TypeError)
+      }.should.raise(TypeError)
     end
   end
 end