Update to ruby/spec@a454137

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63768 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/io/pos_spec.rb

@@ -9,4 +9,3 @@ end
 describe "IO#pos=" do
   it_behaves_like :io_set_pos, :pos=
 end
-

spec/ruby/core/io/print_spec.rb

@@ -51,4 +51,3 @@ describe IO, "#print" do
     lambda { IOSpecs.closed_io.print("stuff") }.should raise_error(IOError)
   end
 end
-

spec/ruby/core/io/shared/write.rb

@@ -69,4 +69,25 @@ describe :io_write, shared: true do
     lambda { IOSpecs.closed_io.send(@method, "hello") }.should raise_error(IOError)
   end
 
+  describe "on a pipe" do
+    before :each do
+      @r, @w = IO.pipe
+    end
+
+    after :each do
+      @r.close
+      @w.close
+    end
+
+    it "writes the given String to the pipe" do
+      @w.send(@method, "foo")
+      @w.close
+      @r.read.should == "foo"
+    end
+
+    it "raises Errno::EPIPE if the read end is closed" do
+      @r.close
+      -> { @w.send(@method, "foo") }.should raise_error(Errno::EPIPE, "Broken pipe")
+    end
+  end
 end