1 files changed, 7 insertions, 12 deletions
diff --git a/spec/ruby/library/stringio/close_write_spec.rb b/spec/ruby/library/stringio/close_write_spec.rb
index f6292a9253..b74b996166 100644
--- a/spec/ruby/library/stringio/close_write_spec.rb
+++ b/spec/ruby/library/stringio/close_write_spec.rb
@@ -3,16 +3,16 @@ require_relative 'fixtures/classes'
 
 describe "StringIO#close_write" do
   before :each do
-    @io = StringIO.new("example")
+    @io = StringIO.new(+"example")
   end
 
   it "returns nil" do
-    @io.close_write.should be_nil
+    @io.close_write.should == nil
   end
 
   it "prevents further writing" do
     @io.close_write
-    lambda { @io.write('x') }.should raise_error(IOError)
+    -> { @io.write('x') }.should.raise(IOError)
   end
 
   it "allows further reading" do
@@ -21,16 +21,11 @@ describe "StringIO#close_write" do
   end
 
   it "raises an IOError when in read-only mode" do
-    io = StringIO.new("example", "r")
-    lambda { io.close_write }.should raise_error(IOError)
+    io = StringIO.new(+"example", "r")
+    -> { io.close_write }.should.raise(IOError)
 
-    io = StringIO.new("example")
+    io = StringIO.new(+"example")
     io.close_write
-    ruby_version_is ''...'2.3' do
-      lambda { io.close_write }.should raise_error(IOError)
-    end
-    ruby_version_is '2.3' do
-      io.close_write.should == nil
-    end
+    io.close_write.should == nil
   end
 end