nix-super/tests/unit/libexpr/nix_api_external.cc
2024-03-28 10:52:01 +01:00

83 lines
2.3 KiB
C++

#include "nix_api_store.h"
#include "nix_api_store_internal.h"
#include "nix_api_util.h"
#include "nix_api_util_internal.h"
#include "nix_api_expr.h"
#include "nix_api_expr_internal.h"
#include "nix_api_value.h"
#include "nix_api_external.h"
#include "tests/nix_api_store.hh"
#include <string>
#include <gtest/gtest.h>
namespace nixC {
class MyExternalValueDesc : public NixCExternalValueDesc
{
public:
MyExternalValueDesc(int x)
: _x(x)
{
print = print_function;
showType = show_type_function;
typeOf = type_of_function;
}
private:
int _x;
static void print_function(void * self, nix_printer * printer) {}
static void show_type_function(void * self, nix_string_return * res) {}
static void type_of_function(void * self, nix_string_return * res)
{
std::cout << self << std::endl;
MyExternalValueDesc * obj = static_cast<MyExternalValueDesc *>(self);
std::string type_string = "nix-external<MyExternalValueDesc( ";
type_string += std::to_string(obj->_x);
type_string += " )>";
res->str = &*type_string.begin();
}
};
class nix_api_external_test : public nix_api_store_test
{
public:
nix_api_external_test()
{
state = nix_state_create(nullptr, nullptr, store);
value = nix_alloc_value(nullptr, state);
}
~nix_api_external_test()
{
nix_gc_decref(nullptr, value);
nix_state_free(state);
}
EvalState * state;
Value * value;
};
TEST_F(nix_api_external_test, nix_expr_eval_from_string)
{
MyExternalValueDesc * external = new MyExternalValueDesc(42);
ExternalValue * val = nix_create_external_value(ctx, external, external);
nix_init_external(nullptr, value, val);
EvalState * stateResult = nix_state_create(nullptr, nullptr, store);
Value * valueResult = nix_alloc_value(nullptr, stateResult);
EvalState * stateFn = nix_state_create(nullptr, nullptr, store);
Value * valueFn = nix_alloc_value(nullptr, stateFn);
nix_expr_eval_from_string(nullptr, state, "builtins.typeOf", ".", valueFn);
ASSERT_EQ(NIX_TYPE_EXTERNAL, nix_get_type(nullptr, value));
nix_value_call(ctx, state, valueFn, value, valueResult);
ASSERT_STREQ("nix-external<MyExternalValueDesc( 42 )>", nix_get_string(nullptr, valueResult));
}
}