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#include <cstdlib>
#include <iostream>
#include "catch2/catch.hpp"
#include "src/buildtool/system/system_command.hpp"
namespace {
[[nodiscard]] auto GetTestDir() -> std::filesystem::path {
auto* tmp_dir = std::getenv("TEST_TMPDIR");
if (tmp_dir != nullptr) {
return tmp_dir;
}
return FileSystemManager::GetCurrentDirectory() /
"test/buildtool/file_system";
}
} // namespace
TEST_CASE("SystemCommand", "[filesystem]") {
using Catch::Matchers::Contains;
using Catch::Matchers::StartsWith;
std::string name{"ExecutorTest"};
SystemCommand system{name};
auto const testdir = GetTestDir();
SECTION("empty command") {
auto tmpdir = testdir / "empty";
REQUIRE(FileSystemManager::CreateDirectoryExclusive(tmpdir));
auto output = system.Execute(
{}, {}, FileSystemManager::GetCurrentDirectory(), tmpdir);
CHECK(not output.has_value());
}
SECTION("simple command, no arguments, no env variables") {
auto tmpdir = testdir / "simple_noargs";
REQUIRE(FileSystemManager::CreateDirectoryExclusive(tmpdir));
auto output = system.Execute(
{"echo"}, {}, FileSystemManager::GetCurrentDirectory(), tmpdir);
REQUIRE(output.has_value());
CHECK(output->return_value == 0);
CHECK(*FileSystemManager::ReadFile(output->stdout_file) == "\n");
CHECK(FileSystemManager::ReadFile(output->stderr_file)->empty());
}
SECTION(
"simple command, env variables are expanded only when wrapped with "
"/bin/sh") {
auto tmpdir = testdir / "simple_env0";
REQUIRE(FileSystemManager::CreateDirectoryExclusive(tmpdir));
auto output = system.Execute({"echo", "${MY_MESSAGE}"},
{{"MY_MESSAGE", "hello"}},
FileSystemManager::GetCurrentDirectory(),
tmpdir);
REQUIRE(output.has_value());
CHECK(output->return_value == 0);
CHECK(*FileSystemManager::ReadFile(output->stdout_file) ==
"${MY_MESSAGE}\n");
CHECK(FileSystemManager::ReadFile(output->stderr_file)->empty());
tmpdir = testdir / "simple_env1";
REQUIRE(FileSystemManager::CreateDirectoryExclusive(tmpdir));
auto output_wrapped =
system.Execute({"/bin/sh", "-c", "set -e\necho ${MY_MESSAGE}"},
{{"MY_MESSAGE", "hello"}},
FileSystemManager::GetCurrentDirectory(),
tmpdir);
REQUIRE(output_wrapped.has_value());
CHECK(output_wrapped->return_value == 0);
CHECK(*FileSystemManager::ReadFile(output_wrapped->stdout_file) ==
"hello\n");
CHECK(
FileSystemManager::ReadFile(output_wrapped->stderr_file)->empty());
}
SECTION("executable, producing std output, std error and return value") {
auto tmpdir = testdir / "exe_output";
REQUIRE(FileSystemManager::CreateDirectoryExclusive(tmpdir));
auto output = system.Execute(
{"/bin/sh",
"-c",
"set -e\necho this is stdout; echo this is stderr >&2; exit 5"},
{},
FileSystemManager::GetCurrentDirectory(),
tmpdir);
REQUIRE(output.has_value());
CHECK(output->return_value == 5);
CHECK(*FileSystemManager::ReadFile(output->stdout_file) ==
"this is stdout\n");
CHECK(*FileSystemManager::ReadFile(output->stderr_file) ==
"this is stderr\n");
}
SECTION(
"executable dependent on env, producing std output, std error and "
"return value") {
auto tmpdir = testdir / "exe_output_from_env";
REQUIRE(FileSystemManager::CreateDirectoryExclusive(tmpdir));
std::string const stdout = "this is stdout from env var";
std::string const stderr = "this is stderr from env var";
auto output = system.Execute(
{"/bin/sh",
"-c",
"set -e\necho ${MY_STDOUT}; echo ${MY_STDERR} >&2; exit 5"},
{{"MY_STDOUT", stdout}, {"MY_STDERR", stderr}},
FileSystemManager::GetCurrentDirectory(),
tmpdir);
REQUIRE(output.has_value());
CHECK(output->return_value == 5);
CHECK(*FileSystemManager::ReadFile(output->stdout_file) ==
stdout + '\n');
CHECK(*FileSystemManager::ReadFile(output->stderr_file) ==
stderr + '\n');
}
}
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