Project import generated by Copybara.
PiperOrigin-RevId: 224614037
Change-Id: I14e53449d4aeccb328f86828c76b5f09dea0d4b8
diff --git a/http2/hpack/decoder/hpack_block_collector.h b/http2/hpack/decoder/hpack_block_collector.h
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+// 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.
+
+#ifndef QUICHE_HTTP2_HPACK_DECODER_HPACK_BLOCK_COLLECTOR_H_
+#define QUICHE_HTTP2_HPACK_DECODER_HPACK_BLOCK_COLLECTOR_H_
+
+// HpackBlockCollector implements HpackEntryDecoderListener in order to record
+// the calls using HpackEntryCollector instances (one per HPACK entry). This
+// supports testing of HpackBlockDecoder, which decodes entire HPACK blocks.
+//
+// In addition to implementing the callback methods, HpackBlockCollector also
+// supports comparing two HpackBlockCollector instances (i.e. an expected and
+// an actual), or a sole HPACK entry against an expected value.
+
+#include <stddef.h>
+
+#include <vector>
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "net/third_party/quiche/src/http2/hpack/decoder/hpack_entry_collector.h"
+#include "net/third_party/quiche/src/http2/hpack/decoder/hpack_entry_decoder_listener.h"
+#include "net/third_party/quiche/src/http2/hpack/http2_hpack_constants.h"
+#include "net/third_party/quiche/src/http2/hpack/tools/hpack_block_builder.h"
+#include "net/third_party/quiche/src/http2/platform/api/http2_string.h"
+#include "net/third_party/quiche/src/http2/platform/api/http2_string_piece.h"
+#include "net/third_party/quiche/src/http2/test_tools/http2_random.h"
+
+namespace http2 {
+namespace test {
+
+class HpackBlockCollector : public HpackEntryDecoderListener {
+ public:
+ HpackBlockCollector();
+ HpackBlockCollector(const HpackBlockCollector& other);
+ ~HpackBlockCollector() override;
+
+ // Implementations of HpackEntryDecoderListener, forwarding to pending_entry_,
+ // an HpackEntryCollector for the "in-progress" HPACK entry. OnIndexedHeader
+ // and OnDynamicTableSizeUpdate are pending only for that one call, while
+ // OnStartLiteralHeader is followed by many calls, ending with OnValueEnd.
+ // Once all the calls for one HPACK entry have been received, PushPendingEntry
+ // is used to append the pending_entry_ entry to the collected entries_.
+ void OnIndexedHeader(size_t index) override;
+ void OnDynamicTableSizeUpdate(size_t size) override;
+ void OnStartLiteralHeader(HpackEntryType header_type,
+ size_t maybe_name_index) override;
+ void OnNameStart(bool huffman_encoded, size_t len) override;
+ void OnNameData(const char* data, size_t len) override;
+ void OnNameEnd() override;
+ void OnValueStart(bool huffman_encoded, size_t len) override;
+ void OnValueData(const char* data, size_t len) override;
+ void OnValueEnd() override;
+
+ // Methods for creating a set of expectations (i.e. HPACK entries to compare
+ // against those collected by another instance of HpackBlockCollector).
+
+ // Add an HPACK entry for an indexed header.
+ void ExpectIndexedHeader(size_t index);
+
+ // Add an HPACK entry for a dynamic table size update.
+ void ExpectDynamicTableSizeUpdate(size_t size);
+
+ // Add an HPACK entry for a header entry with an index for the name, and a
+ // literal value.
+ void ExpectNameIndexAndLiteralValue(HpackEntryType type,
+ size_t index,
+ bool value_huffman,
+ const Http2String& value);
+
+ // Add an HPACK entry for a header entry with a literal name and value.
+ void ExpectLiteralNameAndValue(HpackEntryType type,
+ bool name_huffman,
+ const Http2String& name,
+ bool value_huffman,
+ const Http2String& value);
+
+ // Shuffle the entries, in support of generating an HPACK block of entries
+ // in some random order.
+ void ShuffleEntries(Http2Random* rng);
+
+ // Serialize entries_ to the HpackBlockBuilder.
+ void AppendToHpackBlockBuilder(HpackBlockBuilder* hbb) const;
+
+ // Return AssertionSuccess if there is just one entry, and it is an
+ // Indexed Header with the specified index.
+ ::testing::AssertionResult ValidateSoleIndexedHeader(size_t ndx) const;
+
+ // Return AssertionSuccess if there is just one entry, and it is a
+ // Dynamic Table Size Update with the specified size.
+ ::testing::AssertionResult ValidateSoleDynamicTableSizeUpdate(
+ size_t size) const;
+
+ // Return AssertionSuccess if there is just one entry, and it is a Header
+ // entry with an index for the name and a literal value.
+ ::testing::AssertionResult ValidateSoleLiteralValueHeader(
+ HpackEntryType expected_type,
+ size_t expected_index,
+ bool expected_value_huffman,
+ Http2StringPiece expected_value) const;
+
+ // Return AssertionSuccess if there is just one entry, and it is a Header
+ // with a literal name and literal value.
+ ::testing::AssertionResult ValidateSoleLiteralNameValueHeader(
+ HpackEntryType expected_type,
+ bool expected_name_huffman,
+ Http2StringPiece expected_name,
+ bool expected_value_huffman,
+ Http2StringPiece expected_value) const;
+
+ bool IsNotPending() const { return pending_entry_.IsClear(); }
+ bool IsClear() const { return IsNotPending() && entries_.empty(); }
+ void Clear();
+
+ ::testing::AssertionResult VerifyEq(const HpackBlockCollector& that) const;
+
+ private:
+ // Push the value of pending_entry_ onto entries_, and clear pending_entry_.
+ // The pending_entry_ must be complete.
+ void PushPendingEntry();
+
+ HpackEntryCollector pending_entry_;
+ std::vector<HpackEntryCollector> entries_;
+};
+
+} // namespace test
+} // namespace http2
+
+#endif // QUICHE_HTTP2_HPACK_DECODER_HPACK_BLOCK_COLLECTOR_H_
