1 files changed, 6 insertions, 14 deletions
diff --git a/spec/ruby/library/stringio/truncate_spec.rb b/spec/ruby/library/stringio/truncate_spec.rb
index ba910ee98c..592ca5a6e1 100644
--- a/spec/ruby/library/stringio/truncate_spec.rb
+++ b/spec/ruby/library/stringio/truncate_spec.rb
@@ -3,13 +3,11 @@ require "stringio"
 
 describe "StringIO#truncate when passed [length]" do
   before :each do
-    @io = StringIO.new('123456789')
+    @io = StringIO.new(+'123456789')
   end
 
-  # TODO: Report to Ruby-Core: The RDoc says it always returns 0
-  it "returns the passed length" do
-    @io.truncate(4).should eql(4)
-    @io.truncate(10).should eql(10)
+  it "returns an Integer" do
+    @io.truncate(4).should be_kind_of(Integer)
   end
 
   it "truncated the underlying string down to the passed length" do
@@ -18,7 +16,7 @@ describe "StringIO#truncate when passed [length]" do
   end
 
   it "does not create a copy of the underlying string" do
-    io = StringIO.new(str = "123456789")
+    io = StringIO.new(str = +"123456789")
     io.truncate(4)
     io.string.should equal(str)
   end
@@ -47,12 +45,6 @@ describe "StringIO#truncate when passed [length]" do
     @io.string.should == "1234"
   end
 
-  it "returns the passed length Object, NOT the result of #to_int" do
-    obj = mock("to_int")
-    obj.should_receive(:to_int).and_return(4)
-    @io.truncate(obj).should equal(obj)
-  end
-
   it "raises a TypeError when the passed length can't be converted to an Integer" do
     -> { @io.truncate(Object.new) }.should raise_error(TypeError)
   end
@@ -60,10 +52,10 @@ end
 
 describe "StringIO#truncate when self is not writable" do
   it "raises an IOError" do
-    io = StringIO.new("test", "r")
+    io = StringIO.new(+"test", "r")
     -> { io.truncate(2) }.should raise_error(IOError)
 
-    io = StringIO.new("test")
+    io = StringIO.new(+"test")
     io.close_write
     -> { io.truncate(2) }.should raise_error(IOError)
   end