implement a buffer pool for STREAM frames

internal/wire/pool_test.go

@@ -0,0 +1,24 @@
+package wire
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Pool", func() {
+	It("gets and puts STREAM frames", func() {
+		f := getStreamFrame()
+		putStreamFrame(f)
+	})
+
+	It("panics when putting a STREAM frame with a wrong capacity", func() {
+		f := getStreamFrame()
+		f.Data = []byte("foobar")
+		Expect(func() { putStreamFrame(f) }).To(Panic())
+	})
+
+	It("accepts STREAM frames not from the buffer, but ignores them", func() {
+		f := &StreamFrame{Data: []byte("foobar")}
+		putStreamFrame(f)
+	})
+})