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#include "courgette/encoded_program.h"
6
7#include "courgette/streams.h"
8#include "testing/gtest/include/gtest/gtest.h"
9
10TEST(EncodedProgramTest, Test) {
11  //
12  // Create a simple program with a few addresses and references and
13  // check that the bits produced are as expected.
14  //
15  courgette::EncodedProgram* program = new courgette::EncodedProgram();
16
17  uint32 base = 0x00900000;
18  program->set_image_base(base);
19
20  EXPECT_TRUE(program->DefineRel32Label(5, 0));  // REL32 index 5 == base + 0
21  EXPECT_TRUE(program->DefineAbs32Label(7, 4));  // ABS32 index 7 == base + 4
22  program->EndLabels();
23
24  EXPECT_TRUE(program->AddOrigin(0));  // Start at base.
25  EXPECT_TRUE(program->AddAbs32(7));
26  EXPECT_TRUE(program->AddRel32(5));
27
28  // Serialize and deserialize.
29
30  courgette::SinkStreamSet sinks;
31  EXPECT_TRUE(program->WriteTo(&sinks));
32  delete program;
33
34  courgette::SinkStream sink;
35  bool can_collect = sinks.CopyTo(&sink);
36  EXPECT_TRUE(can_collect);
37
38  const void* buffer = sink.Buffer();
39  size_t length = sink.Length();
40
41  courgette::SourceStreamSet sources;
42  bool can_get_source_streams = sources.Init(buffer, length);
43  EXPECT_TRUE(can_get_source_streams);
44
45  courgette::EncodedProgram *encoded2 = new courgette::EncodedProgram();
46  bool can_read = encoded2->ReadFrom(&sources);
47  EXPECT_TRUE(can_read);
48
49  // Finally, try to assemble.
50  courgette::SinkStream assembled;
51  bool can_assemble = encoded2->AssembleTo(&assembled);
52  EXPECT_TRUE(can_assemble);
53  delete encoded2;
54
55  const void* assembled_buffer = assembled.Buffer();
56  size_t assembled_length = assembled.Length();
57
58  EXPECT_EQ(8U, assembled_length);
59
60  static const uint8 golden[] = {
61    0x04, 0x00, 0x90, 0x00,  // ABS32 to base + 4
62    0xF8, 0xFF, 0xFF, 0xFF   // REL32 from next line to base + 2
63  };
64
65  EXPECT_EQ(0, memcmp(assembled_buffer, golden, 8));
66}
67