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// This source code is released into the public domain.
#include <catch2/catch_test_macros.hpp>
import nihil.error;
import nihil.posix;
namespace {
SCENARIO("nihil::open_in_path can find /bin/sh in the default path")
{
GIVEN ("A call to open_in_path for /bin/sh") {
auto ret = nihil::open_in_path("sh");
THEN ("The returned file descriptor should be /bin/sh") {
REQUIRE(ret);
auto sb1 = nihil::stat(*ret).value();
auto sb2 = nihil::stat("/bin/sh").value();
REQUIRE(sb1.st_ino == sb2.st_ino);
REQUIRE(sb1.st_dev == sb2.st_dev);
}
}
}
SCENARIO("nihil::open_in_path works with an explicit path")
{
GIVEN ("A call to open_in_path with an explicit path") {
auto ret = nihil::open_in_path("sh", "/bin:/usr/bin");
THEN ("The returned file descriptor should be /bin/sh") {
REQUIRE(ret);
auto sb1 = nihil::stat(*ret).value();
auto sb2 = nihil::stat("/bin/sh").value();
REQUIRE(sb1.st_ino == sb2.st_ino);
REQUIRE(sb1.st_dev == sb2.st_dev);
}
}
}
SCENARIO("nihil::open_in_path works with an absolute path")
{
GIVEN ("A call to open_in_path with an absolute filename and an empty path") {
auto ret = nihil::open_in_path("/bin/sh", "");
THEN ("The returned file descriptor should be /bin/sh") {
REQUIRE(ret);
auto sb1 = nihil::stat(*ret).value();
auto sb2 = nihil::stat("/bin/sh").value();
REQUIRE(sb1.st_ino == sb2.st_ino);
REQUIRE(sb1.st_dev == sb2.st_dev);
}
}
}
SCENARIO("nihil::open_in_path returns ENOENT when the executable is not found")
{
GIVEN ("A call to open_in_path for a non-existent executable") {
auto ret = nihil::open_in_path("nihil_no_such_executable");
THEN ("The return value should be std::errc::no_such_file_or_directory") {
REQUIRE(!ret);
REQUIRE(ret.error() == std::errc::no_such_file_or_directory);
}
}
}
SCENARIO("nihil::open_in_path returns errors from open(2)")
{
GIVEN ("A call to open_in_path for a non-executable file") {
auto ret = nihil::open_in_path("passwd", "/etc");
THEN ("The return value should be std::errc::permission_denied") {
REQUIRE(!ret);
REQUIRE(ret.error() == std::errc::permission_denied);
}
}
}
} // anonymous namespace
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