Expose Codec via an unstable flag (#49)

Exposes `Codec` using an unstable flag. This is useful for testing.

src/frame/data.rs

@@ -3,6 +3,7 @@ use bytes::{BufMut, Bytes, Buf};
 
 use std::fmt;
 
+#[derive(Eq, PartialEq)]
 pub struct Data<T = Bytes> {
     stream_id: StreamId,
     data: T,

src/frame/go_away.rs

@@ -2,7 +2,7 @@ use frame::{self, Head, Error, Kind, StreamId, Reason};
 
 use bytes::{BufMut, BigEndian};
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, Eq, PartialEq)]
 pub struct GoAway {
     last_stream_id: StreamId,
     error_code: u32,

src/frame/headers.rs

@@ -15,6 +15,7 @@ use std::io::Cursor;
 /// Header frame
 ///
 /// This could be either a request or a response.
+#[derive(Eq, PartialEq)]
 pub struct Headers {
     /// The ID of the stream with which this frame is associated.
     stream_id: StreamId,
@@ -36,7 +37,7 @@ pub struct Headers {
 #[derive(Copy, Clone, Eq, PartialEq)]
 pub struct HeadersFlag(u8);
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub struct PushPromise {
     /// The ID of the stream with which this frame is associated.
     stream_id: StreamId,
@@ -63,7 +64,7 @@ pub struct Continuation {
     headers: Iter,
 }
 
-#[derive(Debug, Default)]
+#[derive(Debug, Default, Eq, PartialEq)]
 pub struct Pseudo {
     // Request
     pub method: Option<Method>,

src/frame/mod.rs

@@ -61,6 +61,7 @@ pub type FrameSize = u32;
 
 pub const HEADER_LEN: usize = 9;
 
+#[derive(Eq, PartialEq)]
 pub enum Frame<T = Bytes> {
     Data(Data<T>),
     Headers(Headers),

src/frame/ping.rs

@@ -5,7 +5,7 @@ const ACK_FLAG: u8 = 0x1;
 
 pub type Payload = [u8; 8];
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub struct Ping {
     ack: bool,
     payload: Payload,

src/frame/priority.rs

@@ -1,12 +1,12 @@
 use frame::*;
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub struct Priority {
     stream_id: StreamId,
     dependency: StreamDependency,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub struct StreamDependency {
     /// The ID of the stream dependency target
     dependency_id: StreamId,

src/frame/reset.rs

@@ -2,7 +2,7 @@ use frame::{self, Head, Error, Kind, StreamId, Reason};
 
 use bytes::{BufMut, BigEndian};
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub struct Reset {
     stream_id: StreamId,
     error_code: u32,

src/frame/util.rs

@@ -29,8 +29,8 @@ pub fn strip_padding(payload: &mut Bytes) -> Result<u8, Error> {
         return Err(Error::TooMuchPadding);
     }
 
-    let _ = payload.split_off(pad_len);
     let _ = payload.split_to(1);
+    let _ = payload.split_off(pad_len);
 
     Ok(pad_len as u8)
 }

src/frame/window_update.rs

@@ -4,7 +4,7 @@ use bytes::{BufMut, BigEndian};
 
 const SIZE_INCREMENT_MASK: u32 = 1 << 31;
 
-#[derive(Copy, Clone, Debug)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
 pub struct WindowUpdate {
     stream_id: StreamId,
     size_increment: u32,