1 files changed, 6 insertions, 6 deletions
diff --git a/spec/ruby/library/stringio/shared/codepoints.rb b/spec/ruby/library/stringio/shared/codepoints.rb
index 9d84aa4919..e35a02ccb4 100644
--- a/spec/ruby/library/stringio/shared/codepoints.rb
+++ b/spec/ruby/library/stringio/shared/codepoints.rb
@@ -6,7 +6,7 @@ describe :stringio_codepoints, shared: true do
   end
 
   it "returns an Enumerator" do
-    @enum.should be_an_instance_of(Enumerator)
+    @enum.should.instance_of?(Enumerator)
   end
 
   it "yields each codepoint code in turn" do
@@ -20,15 +20,15 @@ describe :stringio_codepoints, shared: true do
 
   it "raises an error if reading invalid sequence" do
     @io.pos = 1  # inside of a multibyte sequence
-    -> { @enum.first }.should raise_error(ArgumentError)
+    -> { @enum.first }.should.raise(ArgumentError)
   end
 
   it "raises an IOError if not readable" do
     @io.close_read
-    -> { @enum.to_a }.should raise_error(IOError)
+    -> { @enum.to_a }.should.raise(IOError)
 
-    io = StringIO.new("xyz", "w")
-    -> { io.send(@method).to_a }.should raise_error(IOError)
+    io = StringIO.new(+"xyz", "w")
+    -> { io.send(@method).to_a }.should.raise(IOError)
   end
 
 
@@ -39,7 +39,7 @@ describe :stringio_codepoints, shared: true do
   end
 
   it "returns self" do
-    @io.send(@method) {|l| l }.should equal(@io)
+    @io.send(@method) {|l| l }.should.equal?(@io)
   end
 
 end