// Copyright (c) Lysann Tranvouez.  All rights reserved.

#include <catch2/catch_test_macros.hpp>

#include <mach_detours.h>

char* (*realStrerror)(int) = strerror;
char* strerrorDetour(int errno)
{
    return (char *)"strerrorOverride";
}

TEST_CASE( "Overriding system function", "[attach][system]" )
{
    REQUIRE( std::string_view(strerror( 0 )) == "Undefined error: 0" );

    REQUIRE( detour_transaction_begin() == err_none );
    REQUIRE( detour_attach_and_commit(reinterpret_cast<detour_func_t*>(&realStrerror), reinterpret_cast<detour_func_t>(strerrorDetour)) == err_none );

    CHECK( std::string_view(strerror( 0 )) == "strerrorOverride" );

    // clean up
    CHECK( detour_transaction_begin() == err_none );
    CHECK( detour_detach_and_commit(reinterpret_cast<detour_func_t*>(&realStrerror), reinterpret_cast<detour_func_t>(strerrorDetour)) == err_none );
}