1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "api/rtc_event_log_output_file.h"
#include <fstream>
#include <iterator>
#include <memory>
#include <string>
#include "rtc_base/checks.h"
#include "test/gtest.h"
#include "test/testsupport/file_utils.h"
namespace webrtc {
class RtcEventLogOutputFileTest : public ::testing::Test {
public:
RtcEventLogOutputFileTest() : output_file_name_(GetOutputFilePath()) {
// Ensure no leftovers from previous runs, which might not have terminated
// in an orderly fashion.
remove(output_file_name_.c_str());
}
~RtcEventLogOutputFileTest() override { remove(output_file_name_.c_str()); }
protected:
std::string GetOutputFilePath() const {
auto test_info = ::testing::UnitTest::GetInstance()->current_test_info();
return test::OutputPath() + test_info->test_case_name() + test_info->name();
}
std::string GetOutputFileContents() const {
std::ifstream file(output_file_name_,
std::ios_base::in | std::ios_base::binary);
RTC_CHECK(file.is_open());
RTC_CHECK(file.good());
std::string file_str((std::istreambuf_iterator<char>(file)),
std::istreambuf_iterator<char>());
return file_str;
}
const std::string output_file_name_;
};
TEST_F(RtcEventLogOutputFileTest, NonDefectiveOutputsStartOutActive) {
auto output_file = std::make_unique<RtcEventLogOutputFile>(output_file_name_);
EXPECT_TRUE(output_file->IsActive());
}
TEST_F(RtcEventLogOutputFileTest, DefectiveOutputsStartOutInactive) {
const std::string illegal_filename = "/////////";
auto output_file = std::make_unique<RtcEventLogOutputFile>(illegal_filename);
EXPECT_FALSE(output_file->IsActive());
}
// Sanity over opening a file (by filename) with an unlimited size.
TEST_F(RtcEventLogOutputFileTest, UnlimitedOutputFile) {
const std::string output_str = "one two three";
auto output_file = std::make_unique<RtcEventLogOutputFile>(output_file_name_);
output_file->Write(output_str);
output_file.reset(); // Closing the file flushes the buffer to disk.
EXPECT_EQ(GetOutputFileContents(), output_str);
}
// Do not allow writing more bytes to the file than
TEST_F(RtcEventLogOutputFileTest, LimitedOutputFileCappedToCapacity) {
// Fit two bytes, then the third should be rejected.
auto output_file =
std::make_unique<RtcEventLogOutputFile>(output_file_name_, 2);
output_file->Write("1");
output_file->Write("2");
output_file->Write("3");
// Unsuccessful writes close the file; no need to delete the output to flush.
EXPECT_EQ(GetOutputFileContents(), "12");
}
// Make sure that calls to Write() either write everything to the file, or
// nothing (short of underlying issues in the module that handles the file,
// which would be beyond our control).
TEST_F(RtcEventLogOutputFileTest, DoNotWritePartialLines) {
const std::string output_str_1 = "0123456789";
const std::string output_str_2 = "abcdefghij";
// Set a file size limit just shy of fitting the entire second line.
const size_t size_limit = output_str_1.length() + output_str_2.length() - 1;
auto output_file =
std::make_unique<RtcEventLogOutputFile>(output_file_name_, size_limit);
output_file->Write(output_str_1);
output_file->Write(output_str_2);
// Unsuccessful writes close the file; no need to delete the output to flush.
EXPECT_EQ(GetOutputFileContents(), output_str_1);
}
TEST_F(RtcEventLogOutputFileTest, UnsuccessfulWriteReturnsFalse) {
auto output_file =
std::make_unique<RtcEventLogOutputFile>(output_file_name_, 2);
EXPECT_FALSE(output_file->Write("abc"));
}
TEST_F(RtcEventLogOutputFileTest, SuccessfulWriteReturnsTrue) {
auto output_file =
std::make_unique<RtcEventLogOutputFile>(output_file_name_, 3);
EXPECT_TRUE(output_file->Write("abc"));
}
// Even if capacity is reached, a successful write leaves the output active.
TEST_F(RtcEventLogOutputFileTest, FileStillActiveAfterSuccessfulWrite) {
auto output_file =
std::make_unique<RtcEventLogOutputFile>(output_file_name_, 3);
ASSERT_TRUE(output_file->Write("abc"));
EXPECT_TRUE(output_file->IsActive());
}
// Unsuccessful writes switch the output to inactive, even if capacity has
// not yet been reached.
TEST_F(RtcEventLogOutputFileTest, FileInactiveAfterUnsuccessfulWrite) {
auto output_file =
std::make_unique<RtcEventLogOutputFile>(output_file_name_, 2);
ASSERT_FALSE(output_file->Write("abc"));
EXPECT_FALSE(output_file->IsActive());
}
TEST_F(RtcEventLogOutputFileTest, AllowReasonableFileSizeLimits) {
auto output_file = std::make_unique<RtcEventLogOutputFile>(
output_file_name_, RtcEventLogOutputFile::kMaxReasonableFileSize);
EXPECT_TRUE(output_file->IsActive());
}
#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
TEST_F(RtcEventLogOutputFileTest, WritingToInactiveFileForbidden) {
RtcEventLogOutputFile output_file(output_file_name_, 2);
ASSERT_FALSE(output_file.Write("abc"));
ASSERT_FALSE(output_file.IsActive());
EXPECT_DEATH(output_file.Write("abc"), "");
}
TEST_F(RtcEventLogOutputFileTest, DisallowUnreasonableFileSizeLimits) {
// Keeping in a temporary unique_ptr to make it clearer that the death is
// triggered by construction, not destruction.
std::unique_ptr<RtcEventLogOutputFile> output_file;
auto create_output_file = [&] {
const size_t unreasonable_size =
RtcEventLogOutputFile::kMaxReasonableFileSize + 1;
output_file = std::make_unique<RtcEventLogOutputFile>(output_file_name_,
unreasonable_size);
};
EXPECT_DEATH(create_output_file(), "");
}
#endif
} // namespace webrtc
|
