// 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_TEST_TOOLS_HPACK_STRING_COLLECTOR_H_
#define QUICHE_HTTP2_TEST_TOOLS_HPACK_STRING_COLLECTOR_H_

// Supports tests of decoding HPACK strings.

#include <stddef.h>

#include <iosfwd>
#include <string>

#include "absl/strings/string_view.h"
#include "quiche/http2/hpack/decoder/hpack_string_decoder_listener.h"
#include "quiche/common/platform/api/quiche_export.h"
#include "quiche/common/platform/api/quiche_test.h"

namespace http2 {
namespace test {

// Records the callbacks associated with a decoding a string; must
// call Clear() between decoding successive strings.
struct QUICHE_NO_EXPORT HpackStringCollector
    : public HpackStringDecoderListener {
  enum CollectorState {
    kGenesis,
    kStarted,
    kEnded,
  };

  HpackStringCollector();
  HpackStringCollector(const std::string& str, bool huffman);

  void Clear();
  bool IsClear() const;
  bool IsInProgress() const;
  bool HasEnded() const;

  void OnStringStart(bool huffman, size_t length) override;
  void OnStringData(const char* data, size_t length) override;
  void OnStringEnd() override;

  ::testing::AssertionResult Collected(absl::string_view str,
                                       bool is_huffman_encoded) const;

  std::string ToString() const;

  std::string s;
  size_t len;
  bool huffman_encoded;
  CollectorState state;
};

bool operator==(const HpackStringCollector& a, const HpackStringCollector& b);

bool operator!=(const HpackStringCollector& a, const HpackStringCollector& b);

QUICHE_NO_EXPORT std::ostream& operator<<(std::ostream& out,
                                          const HpackStringCollector& v);

}  // namespace test
}  // namespace http2

#endif  // QUICHE_HTTP2_TEST_TOOLS_HPACK_STRING_COLLECTOR_H_