1// Copyright 2013 The Flutter 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 "testing.h"
6
7#include "flutter/fml/file.h"
8
9namespace flutter {
10namespace testing {
11
12std::string GetCurrentTestName() {
13 return ::testing::UnitTest::GetInstance()->current_test_info()->name();
14}
15
16fml::UniqueFD OpenFixturesDirectory() {
17 auto fixtures_directory =
18 OpenDirectory(GetFixturesPath(), // path
19 false, // create
20 fml::FilePermission::kRead // permission
21 );
22
23 if (!fixtures_directory.is_valid()) {
24 FML_LOG(ERROR) << "Could not open fixtures directory.";
25 return {};
26 }
27 return fixtures_directory;
28}
29
30fml::UniqueFD OpenFixture(std::string fixture_name) {
31 if (fixture_name.size() == 0) {
32 FML_LOG(ERROR) << "Invalid fixture name.";
33 return {};
34 }
35
36 auto fixtures_directory = OpenFixturesDirectory();
37
38 auto fixture_fd = fml::OpenFile(fixtures_directory, // base directory
39 fixture_name.c_str(), // path
40 false, // create
41 fml::FilePermission::kRead // permission
42 );
43 if (!fixture_fd.is_valid()) {
44 FML_LOG(ERROR) << "Could not open fixture for path: " << GetFixturesPath()
45 << "/" << fixture_name << ".";
46 return {};
47 }
48
49 return fixture_fd;
50}
51
52std::unique_ptr<fml::Mapping> OpenFixtureAsMapping(std::string fixture_name) {
53 return fml::FileMapping::CreateReadOnly(OpenFixture(fixture_name));
54}
55
56bool MemsetPatternSetOrCheck(uint8_t* buffer, size_t size, MemsetPatternOp op) {
57 if (buffer == nullptr) {
58 return false;
59 }
60
61 auto pattern = reinterpret_cast<const uint8_t*>("dErP");
62 constexpr auto pattern_length = 4;
63
64 uint8_t* start = buffer;
65 uint8_t* p = buffer;
66
67 while ((start + size) - p >= pattern_length) {
68 switch (op) {
69 case MemsetPatternOp::kMemsetPatternOpSetBuffer:
70 memmove(p, pattern, pattern_length);
71 break;
72 case MemsetPatternOp::kMemsetPatternOpCheckBuffer:
73 if (memcmp(pattern, p, pattern_length) != 0) {
74 return false;
75 }
76 break;
77 };
78 p += pattern_length;
79 }
80
81 if ((start + size) - p != 0) {
82 switch (op) {
83 case MemsetPatternOp::kMemsetPatternOpSetBuffer:
84 memmove(p, pattern, (start + size) - p);
85 break;
86 case MemsetPatternOp::kMemsetPatternOpCheckBuffer:
87 if (memcmp(pattern, p, (start + size) - p) != 0) {
88 return false;
89 }
90 break;
91 }
92 }
93
94 return true;
95}
96
97bool MemsetPatternSetOrCheck(std::vector<uint8_t>& buffer, MemsetPatternOp op) {
98 return MemsetPatternSetOrCheck(buffer.data(), buffer.size(), op);
99}
100
101} // namespace testing
102} // namespace flutter
103