transmission/tests/libtransmission/subprocess-test.cc

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// This file Copyright (C) 2017-2022 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
#include <libtransmission/transmission.h>
#include <libtransmission/error.h>
#include <libtransmission/file.h>
#include <libtransmission/platform.h>
#include <libtransmission/subprocess.h>
#include "gtest/internal/gtest-port.h" // GetArgvs()
#include "test-fixtures.h"
#include <array>
#include <fstream>
#include <map>
#include <string>
#include <string_view>
#ifdef _WIN32
#include <windows.h>
#define setenv(key, value, unused) SetEnvironmentVariableA(key, value)
#endif
namespace libtransmission::test
{
std::string getTestProgramPath(std::string const& filename)
{
auto const exe_path = tr_sys_path_resolve(testing::internal::GetArgvs().front().data());
auto const exe_dir = tr_sys_path_dirname(exe_path);
return std::string{ exe_dir } + TR_PATH_DELIMITER + filename;
}
class SubprocessTest
: public ::testing::Test
, public testing::WithParamInterface<std::string>
{
protected:
Sandbox sandbox_;
[[nodiscard]] std::string buildSandboxPath(std::string const& filename) const
{
auto path = sandbox_.path();
path += TR_PATH_DELIMITER;
path += filename;
tr_sys_path_native_separators(&path.front());
return path;
}
[[nodiscard]] static std::string nativeCwd()
{
auto path = tr_sys_dir_get_current();
tr_sys_path_native_separators(path.data());
return path;
}
std::string const arg_dump_args_{ "--dump-args" };
std::string const arg_dump_env_{ "--dump-env" };
std::string const arg_dump_cwd_{ "--dump-cwd" };
std::string self_path_;
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static void waitForFileToBeReadable(std::string const& path)
{
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auto const test = [&path]()
{
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return std::ifstream{ path, std::ios_base::in }.is_open();
};
EXPECT_TRUE(waitFor(test, 30000));
}
void SetUp() override
{
self_path_ = GetParam();
}
};
TEST_P(SubprocessTest, SpawnAsyncMissingExec)
{
auto const missing_exe_path = std::string{ TR_IF_WIN32("C:\\", "/") "tr-missing-test-exe" TR_IF_WIN32(".exe", "") };
auto args = std::array<char const*, 2>{ missing_exe_path.data(), nullptr };
tr_error* error = nullptr;
auto const ret = tr_spawn_async(std::data(args), {}, {}, &error);
EXPECT_FALSE(ret);
EXPECT_NE(nullptr, error);
EXPECT_NE(0, error->code);
EXPECT_NE(nullptr, error->message);
tr_error_clear(&error);
}
TEST_P(SubprocessTest, SpawnAsyncArgs)
{
auto const result_path = buildSandboxPath("result.txt");
bool const allow_batch_metachars = TR_IF_WIN32(false, true) || !tr_strv_ends_with(tr_strlower(self_path_), ".cmd"sv);
auto const test_arg1 = std::string{ "arg1 " };
auto const test_arg2 = std::string{ " arg2" };
auto const test_arg3 = std::string{};
auto const test_arg4 = std::string{ "\"arg3'^! $PATH %PATH% \\" };
auto const args = std::array<char const*, 8>{ self_path_.c_str(),
result_path.data(),
arg_dump_args_.data(),
test_arg1.data(),
test_arg2.data(),
test_arg3.data(),
allow_batch_metachars ? test_arg4.data() : nullptr,
nullptr };
tr_error* error = nullptr;
bool const ret = tr_spawn_async(std::data(args), {}, {}, &error);
EXPECT_TRUE(ret) << args[0] << ' ' << args[1];
EXPECT_EQ(nullptr, error) << *error;
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waitForFileToBeReadable(result_path);
auto in = std::ifstream{ result_path, std::ios_base::in };
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EXPECT_TRUE(in.is_open()) << strerror(errno);
auto line = std::string{};
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_arg1, line);
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_arg2, line);
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_arg3, line);
if (allow_batch_metachars)
{
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_arg4, line);
}
EXPECT_FALSE(std::getline(in, line));
}
TEST_P(SubprocessTest, SpawnAsyncEnv)
{
auto const result_path = buildSandboxPath("result.txt");
auto const test_env_key1 = std::string{ "VAR1" };
auto const test_env_key2 = std::string{ "_VAR_2_" };
auto const test_env_key3 = std::string{ "vAr#" };
auto const test_env_key4 = std::string{ "FOO" };
auto const test_env_key5 = std::string{ "ZOO" };
auto const test_env_key6 = std::string{ "TR_MISSING_TEST_ENV_KEY" };
auto const test_env_value1 = std::string{ "value1 " };
auto const test_env_value2 = std::string{ " value2" };
auto const test_env_value3 = std::string{ " \"value3'^! $PATH %PATH% " };
auto const test_env_value4 = std::string{ "bar" };
auto const test_env_value5 = std::string{ "jar" };
auto args = std::array<char const*, 10>{
self_path_.c_str(), //
result_path.data(), //
arg_dump_env_.data(), //
test_env_key1.data(), //
test_env_key2.data(), //
test_env_key3.data(), //
test_env_key4.data(), //
test_env_key5.data(), //
test_env_key6.data(), //
nullptr, //
};
auto const env = std::map<std::string_view, std::string_view>{
{ test_env_key1, test_env_value1 },
{ test_env_key2, test_env_value2 },
{ test_env_key3, test_env_value3 },
{ test_env_key5, test_env_value5 },
};
setenv("FOO", "bar", 1 /*true*/); // inherited
setenv("ZOO", "tar", 1 /*true*/); // overridden
tr_error* error = nullptr;
bool const ret = tr_spawn_async(std::data(args), env, {}, &error);
EXPECT_TRUE(ret);
EXPECT_EQ(nullptr, error) << *error;
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waitForFileToBeReadable(result_path);
auto in = std::ifstream{ result_path, std::ios_base::in };
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EXPECT_TRUE(in.is_open()) << strerror(errno);
auto line = std::string{};
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_env_value1, line);
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_env_value2, line);
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_env_value3, line);
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_env_value4, line);
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ(test_env_value5, line);
EXPECT_TRUE(std::getline(in, line));
EXPECT_EQ("<null>"sv, line);
EXPECT_FALSE(std::getline(in, line));
}
TEST_P(SubprocessTest, SpawnAsyncCwdExplicit)
{
auto const test_dir = sandbox_.path();
auto const result_path = buildSandboxPath("result.txt");
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auto const args = std::array<char const*, 4>{ self_path_.c_str(), result_path.c_str(), arg_dump_cwd_.c_str(), nullptr };
tr_error* error = nullptr;
bool const ret = tr_spawn_async(std::data(args), {}, test_dir, &error);
EXPECT_TRUE(ret);
EXPECT_EQ(nullptr, error) << *error;
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waitForFileToBeReadable(result_path);
auto in = std::ifstream{ result_path, std::ios_base::in };
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EXPECT_TRUE(in.is_open()) << strerror(errno);
auto line = std::string{};
EXPECT_TRUE(std::getline(in, line));
auto expected = std::string{ test_dir };
tr_sys_path_native_separators(std::data(expected));
auto actual = line;
tr_sys_path_native_separators(std::data(actual));
EXPECT_EQ(expected, actual);
EXPECT_FALSE(std::getline(in, line));
}
TEST_P(SubprocessTest, SpawnAsyncCwdInherit)
{
auto const result_path = buildSandboxPath("result.txt");
auto const expected_cwd = nativeCwd();
auto const args = std::array<char const*, 4>{ self_path_.c_str(), result_path.data(), arg_dump_cwd_.data(), nullptr };
tr_error* error = nullptr;
auto const ret = tr_spawn_async(std::data(args), {}, {}, &error);
EXPECT_TRUE(ret);
EXPECT_EQ(nullptr, error) << *error;
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waitForFileToBeReadable(result_path);
auto in = std::ifstream{ result_path, std::ios_base::in };
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EXPECT_TRUE(in.is_open()) << strerror(errno);
auto line = std::string{};
EXPECT_TRUE(std::getline(in, line));
auto actual = line;
tr_sys_path_native_separators(std::data(actual));
EXPECT_EQ(expected_cwd, actual);
EXPECT_FALSE(std::getline(in, line));
}
TEST_P(SubprocessTest, SpawnAsyncCwdMissing)
{
auto const result_path = buildSandboxPath("result.txt");
auto const args = std::array<char const*, 4>{ self_path_.c_str(), result_path.data(), arg_dump_cwd_.data(), nullptr };
tr_error* error = nullptr;
auto const ret = tr_spawn_async(std::data(args), {}, TR_IF_WIN32("C:\\", "/") "tr-missing-test-work-dir", &error);
EXPECT_FALSE(ret);
EXPECT_NE(nullptr, error);
EXPECT_NE(0, error->code);
EXPECT_NE(nullptr, error->message);
tr_error_clear(&error);
}
INSTANTIATE_TEST_SUITE_P(
Subprocess,
SubprocessTest,
TR_IF_WIN32(
::testing::Values( //
getTestProgramPath("subprocess-test.exe"),
getTestProgramPath("subprocess-test.cmd")),
::testing::Values( //
getTestProgramPath("subprocess-test"))));
} // namespace libtransmission::test