Add new HTTP/2 and HPACK decoder in net/http2/.

net/http2/decoder/payload_decoders/priority_payload_decoder_test.cc

Index: net/http2/decoder/payload_decoders/priority_payload_decoder_test.cc
diff --git a/net/http2/decoder/payload_decoders/priority_payload_decoder_test.cc b/net/http2/decoder/payload_decoders/priority_payload_decoder_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..dabcba582c3a5f67ded260751dc3ca266e6b9197
--- /dev/null
+++ b/net/http2/decoder/payload_decoders/priority_payload_decoder_test.cc
@@ -0,0 +1,100 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/http2/decoder/payload_decoders/priority_payload_decoder.h"
+
+#include <stddef.h>
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "net/http2/decoder/frame_parts.h"
+#include "net/http2/decoder/frame_parts_collector.h"
+#include "net/http2/decoder/http2_frame_decoder_listener.h"
+#include "net/http2/decoder/payload_decoders/payload_decoder_base_test_util.h"
+#include "net/http2/http2_constants.h"
+#include "net/http2/http2_structures_test_util.h"
+#include "net/http2/tools/http2_frame_builder.h"
+#include "net/http2/tools/http2_random.h"
+#include "net/http2/tools/random_decoder_test.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+namespace test {
+
+class PriorityPayloadDecoderPeer {
+ public:
+  static constexpr Http2FrameType FrameType() {
+    return Http2FrameType::PRIORITY;
+  }
+
+  // Returns the mask of flags that affect the decoding of the payload (i.e.
+  // flags that that indicate the presence of certain fields or padding).
+  static constexpr uint8_t FlagsAffectingPayloadDecoding() { return 0; }
+
+  static void Randomize(PriorityPayloadDecoder* p, RandomBase* rng) {
+    VLOG(1) << "PriorityPayloadDecoderPeer::Randomize";
+    test::Randomize(&p->priority_fields_, rng);
+  }
+};
+
+namespace {
+
+struct Listener : public FramePartsCollector {
+  void OnPriorityFrame(const Http2FrameHeader& header,
+                       const Http2PriorityFields& priority_fields) override {
+    VLOG(1) << "OnPriority: " << header << "; " << priority_fields;
+    StartAndEndFrame(header)->OnPriorityFrame(header, priority_fields);
+  }
+
+  void OnFrameSizeError(const Http2FrameHeader& header) override {
+    VLOG(1) << "OnFrameSizeError: " << header;
+    FrameError(header)->OnFrameSizeError(header);
+  }
+};
+
+class PriorityPayloadDecoderTest
+    : public AbstractPayloadDecoderTest<PriorityPayloadDecoder,
+                                        PriorityPayloadDecoderPeer,
+                                        Listener> {
+ public:
+  static bool ApproveSizeForWrongSize(size_t size) {
+    return size != Http2PriorityFields::EncodedSize();
+  }
+
+ protected:
+  Http2PriorityFields RandPriorityFields() {
+    Http2PriorityFields fields;
+    test::Randomize(&fields, RandomPtr());
+    return fields;
+  }
+};
+
+// Confirm we get an error if the payload is not the correct size to hold
+// exactly one Http2PriorityFields.
+TEST_F(PriorityPayloadDecoderTest, WrongSize) {
+  Http2FrameBuilder fb;
+  fb.Append(RandPriorityFields());
+  fb.Append(RandPriorityFields());
+  EXPECT_TRUE(VerifyDetectsFrameSizeError(
+      0, fb.buffer(),
+      base::Bind(&PriorityPayloadDecoderTest::ApproveSizeForWrongSize)));
+}
+
+TEST_F(PriorityPayloadDecoderTest, VariousPayloads) {
+  for (int n = 0; n < 100; ++n) {
+    Http2PriorityFields fields = RandPriorityFields();
+    Http2FrameBuilder fb;
+    fb.Append(fields);
+    Http2FrameHeader header(fb.size(), Http2FrameType::PRIORITY, RandFlags(),
+                            RandStreamId());
+    set_frame_header(header);
+    FrameParts expected(header);
+    expected.opt_priority = fields;
+    EXPECT_TRUE(DecodePayloadAndValidateSeveralWays(fb.buffer(), expected));
+  }
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace net