add WindowUpdate frame parsing

frames/window_update_frame_test.go

@@ -0,0 +1,24 @@
+package frames
+
+import (
+	"bytes"
+
+	"github.com/lucas-clemente/quic-go/protocol"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("WindowUpdateFrame", func() {
+	Context("window update frames", func() {
+		Context("when parsing", func() {
+			It("accepts sample frame", func() {
+				b := bytes.NewReader([]byte{0x04, 0xEF, 0xBE, 0xAD, 0xDE, 0x44, 0x33, 0x22, 0x11, 0xAD, 0xFB, 0xCA, 0xDE})
+				frame, err := ParseWindowUpdateFrame(b)
+				Expect(err).ToNot(HaveOccurred())
+				Expect(frame.StreamID).To(Equal(protocol.StreamID(0xDEADBEEF)))
+				Expect(frame.ByteOffset).To(Equal(uint64(0xDECAFBAD11223344)))
+				Expect(b.Len()).To(Equal(0))
+			})
+		})
+	})
+})