1 /*
2 * Copyright 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <audio_utils/FdToString.h>
18
19 #include <signal.h>
20 #include <chrono>
21
22 #include <gtest/gtest.h>
23
24 using namespace android::audio_utils;
25
TEST(audio_utils_fdtostring,basic)26 TEST(audio_utils_fdtostring, basic) {
27 signal(SIGPIPE, SIG_IGN);
28 const std::string PREFIX{"aa "};
29 const std::string TEST_STRING{"hello world\n"};
30
31 auto writer_opt = FdToString::createWriter(PREFIX);
32 ASSERT_TRUE(writer_opt.has_value());
33 FdToString::Writer& writer = *writer_opt;
34 const int fd = writer.borrowFdUnsafe();
35 ASSERT_TRUE(fd >= 0);
36
37 write(fd, TEST_STRING.c_str(), TEST_STRING.size());
38
39 const std::string result = FdToString::closeWriterAndGetString(std::move(writer));
40 ASSERT_EQ((PREFIX + TEST_STRING), result);
41 }
42
TEST(audio_utils_fdtostring,multiline)43 TEST(audio_utils_fdtostring, multiline) {
44 signal(SIGPIPE, SIG_IGN);
45 const std::string PREFIX{"aa "};
46 const std::string INPUT[] = {"hello\n", "pt1", "pt2 ", "\n", "\n", "pt3\n", "pt4"};
47 const std::string GOLDEN = "aa hello\naa pt1pt2 \naa \naa pt3\npt4";
48
49 auto writer_opt = FdToString::createWriter(PREFIX);
50 ASSERT_TRUE(writer_opt.has_value());
51 FdToString::Writer& writer = *writer_opt;
52 const int fd = writer.borrowFdUnsafe();
53 ASSERT_TRUE(fd >= 0);
54
55 for (const auto& str : INPUT) {
56 write(fd, str.c_str(), str.size());
57 }
58
59 ASSERT_EQ(FdToString::closeWriterAndGetString(std::move(writer)), GOLDEN);
60 }
61
TEST(audio_utils_fdtostring,blocking)62 TEST(audio_utils_fdtostring, blocking) {
63 signal(SIGPIPE, SIG_IGN);
64 const std::string PREFIX{"- "};
65 const std::string INPUT[] = {"1\n", "2\n", "3\n", "4\n", "5\n"};
66 const std::string GOLDEN = "- 1\n- 2\n- 3\n- 4\n- 5\n";
67
68 auto writer_opt = FdToString::createWriter(PREFIX, std::chrono::milliseconds{200});
69
70 ASSERT_TRUE(writer_opt.has_value());
71 FdToString::Writer& writer = *writer_opt;
72 const int fd = writer.borrowFdUnsafe();
73 ASSERT_TRUE(fd >= 0);
74
75 // Chosen so that we shouldn't finish the entire array before the timeout
76 constexpr auto WAIT = std::chrono::milliseconds{90};
77
78 int count = 0;
79 for (const auto& str : INPUT) {
80 ASSERT_LT(count, 4) << "The reader has timed out, write should have failed by now";
81 if (write(fd, str.c_str(), str.size()) < 0) break;
82 std::this_thread::sleep_for(WAIT);
83 count++;
84 }
85
86 ASSERT_EQ(FdToString::closeWriterAndGetString(std::move(writer)).substr(0, 8),
87 GOLDEN.substr(0, 8)) << "Format mistake";
88 }
89