buffered pipe
diff --git a/pipe_test.go b/pipe_test.go
new file mode 100644
index 0000000..10c4c32
--- /dev/null
+++ b/pipe_test.go
@@ -0,0 +1,24 @@
+// Copyright 2014 The Go Authors.
+// See https://code.google.com/p/go/source/browse/CONTRIBUTORS
+// Licensed under the same terms as Go itself:
+// https://code.google.com/p/go/source/browse/LICENSE
+
+package http2
+
+import (
+ "errors"
+ "testing"
+)
+
+func TestPipeClose(t *testing.T) {
+ var p pipe
+ p.c.L = &p.m
+ a := errors.New("a")
+ b := errors.New("b")
+ p.Close(a)
+ p.Close(b)
+ _, err := p.Read(make([]byte, 1))
+ if err != a {
+ t.Errorf("err = %v want %v", err, a)
+ }
+}
