1 files changed, 9 insertions, 10 deletions
diff --git a/spec/ruby/core/array/append_spec.rb b/spec/ruby/core/array/append_spec.rb
index 90e1688c5a..5480d9f65e 100644
--- a/spec/ruby/core/array/append_spec.rb
+++ b/spec/ruby/core/array/append_spec.rb
@@ -1,6 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/push', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "Array#<<" do
   it "pushes the object onto the end of the array" do
@@ -10,8 +9,8 @@ describe "Array#<<" do
   it "returns self to allow chaining" do
     a = []
     b = a
-    (a << 1).should equal(b)
-    (a << 2 << 3).should equal(b)
+    (a << 1).should.equal?(b)
+    (a << 2 << 3).should.equal?(b)
   end
 
   it "correctly resizes the Array" do
@@ -30,13 +29,13 @@ describe "Array#<<" do
     a.should == [:foo]
   end
 
-  it "raises a RuntimeError on a frozen array" do
-    lambda { ArraySpecs.frozen_array << 5 }.should raise_error(RuntimeError)
+  it "raises a FrozenError on a frozen array" do
+    -> { ArraySpecs.frozen_array << 5 }.should.raise(FrozenError)
   end
 end
 
-ruby_version_is "2.5" do
-  describe "Array#append" do
-    it_behaves_like(:array_push, :append)
+describe "Array#append" do
+  it "is an alias of Array#push" do
+    Array.instance_method(:append).should == Array.instance_method(:push)
   end
 end