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// This source code is released into the public domain.
#include <unistd.h>
#include <catch2/catch_test_macros.hpp>
import nihil.std;
import nihil.error;
import nihil.posix;
namespace {
TEST_CASE("getenv: existing value", "[getenv]")
{
auto constexpr *name = "NIHIL_TEST_VAR";
auto constexpr *value = "test is a test";
REQUIRE(::setenv(name, value, 1) == 0);
auto const s = nihil::getenv(name);
REQUIRE(s);
REQUIRE(*s == value);
}
TEST_CASE("getenv: non-existing value", "[getenv]")
{
auto constexpr *name = "NIHIL_TEST_VAR";
REQUIRE(::unsetenv(name) == 0);
auto const s = nihil::getenv(name);
REQUIRE(!s);
REQUIRE(s.error() == std::errc::no_such_file_or_directory);
}
// Force the call to getenv_r() to reallocate.
TEST_CASE("getenv: long value")
{
auto constexpr *name = "NIHIL_TEST_VAR";
auto const value = std::string(4096, 'a');
REQUIRE(::setenv(name, value.c_str(), 1) == 0);
auto const s = nihil::getenv(name);
REQUIRE(s);
REQUIRE(*s == value);
}
} // anonymous namespace
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