1 files changed, 17 insertions, 1 deletions
diff --git a/spec/ruby/core/io/getbyte_spec.rb b/spec/ruby/core/io/getbyte_spec.rb
index 6ba8f0a3e0..668d81519c 100644
--- a/spec/ruby/core/io/getbyte_spec.rb
+++ b/spec/ruby/core/io/getbyte_spec.rb
@@ -23,7 +23,7 @@ describe "IO#getbyte" do
   end
 
   it "raises an IOError on closed stream" do
-    -> { IOSpecs.closed_io.getbyte }.should raise_error(IOError)
+    -> { IOSpecs.closed_io.getbyte }.should.raise(IOError)
   end
 end
 
@@ -40,3 +40,19 @@ describe "IO#getbyte" do
     @io.getbyte.should == nil
   end
 end
+
+describe "IO#getbyte" do
+  before :each do
+    @name = tmp("io_getbyte.txt")
+    @io = new_io(@name, 'w')
+  end
+
+  after :each do
+    @io.close if @io
+    rm_r @name if @name
+  end
+
+  it "raises an IOError if the stream is not readable" do
+    -> { @io.getbyte }.should.raise(IOError)
+  end
+end