1 files changed, 8 insertions, 6 deletions
diff --git a/test/spec_rewindable_input.rb b/test/spec_rewindable_input.rb
index 5adfba1d..6bb5f5cf 100644
--- a/test/spec_rewindable_input.rb
+++ b/test/spec_rewindable_input.rb
@@ -1,4 +1,6 @@
-require 'minitest/autorun'
+# frozen_string_literal: true
+
+require 'minitest/global_expectations/autorun'
  require 'stringio'
  require 'rack/rewindable_input'
  
@@ -26,14 +28,14 @@ module RewindableTest
    end
  
    it "be able to handle to read(length, buffer)" do
-    buffer = ""
+    buffer = "".dup
      result = @rio.read(1, buffer)
      result.must_equal "h"
      result.object_id.must_equal buffer.object_id
    end
  
    it "be able to handle to read(nil, buffer)" do
-    buffer = ""
+    buffer = "".dup
      result = @rio.read(nil, buffer)
      result.must_equal "hello world"
      result.object_id.must_equal buffer.object_id
@@ -95,7 +97,7 @@ end
  describe Rack::RewindableInput do
    describe "given an IO object that is already rewindable" do
      def setup
-      @io = StringIO.new("hello world")
+      @io = StringIO.new("hello world".dup)
        super
      end
  
@@ -104,7 +106,7 @@ describe Rack::RewindableInput do
  
    describe "given an IO object that is not rewindable" do
      def setup
-      @io = StringIO.new("hello world")
+      @io = StringIO.new("hello world".dup)
        @io.instance_eval do
          undef :rewind
        end
@@ -116,7 +118,7 @@ describe Rack::RewindableInput do
  
    describe "given an IO object whose rewind method raises Errno::ESPIPE" do
      def setup
-      @io = StringIO.new("hello world")
+      @io = StringIO.new("hello world".dup)
        def @io.rewind
          raise Errno::ESPIPE, "You can't rewind this!"
        end