1 files changed, 14 insertions, 7 deletions
diff --git a/spec/ruby/core/kernel/initialize_copy_spec.rb b/spec/ruby/core/kernel/initialize_copy_spec.rb
index fe08d184ad..ebac0c14de 100644
--- a/spec/ruby/core/kernel/initialize_copy_spec.rb
+++ b/spec/ruby/core/kernel/initialize_copy_spec.rb
@@ -1,17 +1,24 @@
 require_relative '../../spec_helper'
 
 describe "Kernel#initialize_copy" do
+  it "returns self" do
+    obj = Object.new
+    obj.send(:initialize_copy, obj).should.equal?(obj)
+  end
+
   it "does nothing if the argument is the same as the receiver" do
     obj = Object.new
     obj.send(:initialize_copy, obj).should.equal?(obj)
-    obj.freeze
+
+    obj = Object.new.freeze
     obj.send(:initialize_copy, obj).should.equal?(obj)
+
     1.send(:initialize_copy, 1).should.equal?(1)
   end
 
   it "raises FrozenError if the receiver is frozen" do
-    -> { Object.new.freeze.send(:initialize_copy, Object.new) }.should raise_error(FrozenError)
-    -> { 1.send(:initialize_copy, Object.new) }.should raise_error(FrozenError)
+    -> { Object.new.freeze.send(:initialize_copy, Object.new) }.should.raise(FrozenError)
+    -> { 1.send(:initialize_copy, Object.new) }.should.raise(FrozenError)
   end
 
   it "raises TypeError if the objects are of different class" do
@@ -20,10 +27,10 @@ describe "Kernel#initialize_copy" do
     a = klass.new
     b = sub.new
     message = 'initialize_copy should take same class object'
-    -> { a.send(:initialize_copy, b) }.should raise_error(TypeError, message)
-    -> { b.send(:initialize_copy, a) }.should raise_error(TypeError, message)
+    -> { a.send(:initialize_copy, b) }.should.raise(TypeError, message)
+    -> { b.send(:initialize_copy, a) }.should.raise(TypeError, message)
 
-    -> { a.send(:initialize_copy, 1) }.should raise_error(TypeError, message)
-    -> { a.send(:initialize_copy, 1.0) }.should raise_error(TypeError, message)
+    -> { a.send(:initialize_copy, 1) }.should.raise(TypeError, message)
+    -> { a.send(:initialize_copy, 1.0) }.should.raise(TypeError, message)
   end
 end