1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef NET_QUIC_TEST_TOOLS_MOCK_RANDOM_H_
6#define NET_QUIC_TEST_TOOLS_MOCK_RANDOM_H_
7
8#include "base/compiler_specific.h"
9#include "net/quic/crypto/quic_random.h"
10
11namespace net {
12
13class MockRandom : public QuicRandom {
14 public:
15  // Initializes base_ to 0xDEADBEEF.
16  MockRandom();
17  explicit MockRandom(uint32 base);
18
19  // QuicRandom:
20  // Fills the |data| buffer with a repeating byte, initially 'r'.
21  virtual void RandBytes(void* data, size_t len) OVERRIDE;
22  // Returns base + the current increment.
23  virtual uint64 RandUint64() OVERRIDE;
24  // Does nothing.
25  virtual void Reseed(const void* additional_entropy,
26                      size_t entropy_len) OVERRIDE;
27
28  // ChangeValue increments |increment_|. This causes the value returned by
29  // |RandUint64| and the byte that |RandBytes| fills with, to change.
30  void ChangeValue();
31
32 private:
33  uint32 base_;
34  uint8 increment_;
35
36  DISALLOW_COPY_AND_ASSIGN(MockRandom);
37};
38
39}  // namespace net
40
41#endif  // NET_QUIC_TEST_TOOLS_MOCK_RANDOM_H_
42