#include <stdio.h>
#include <string.h>

#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>

#include "honeysuckle.h"

/* minunit testing macros modified from those at 
   www.jera.com/techinfo/jtns/jtn002.html */
#define mu_assert(message, test) do { if (!(test)) return message; } while (0)
#define mu_run_test(name, test) do {                            \
        lua_State *L = luaL_newstate();                         \
        luaL_openlibs(L);                                       \
        char *message = test(L);                                \
        lua_close(L);                                           \
        tests_run++;                                            \
        if (message) {                                          \
            printf("test '%s' failed: %s\n", name, message);    \
            tests_failed++;                                     \
        }                                                       \
    } while (0)

int tests_run = 0;
int tests_failed = 0;

/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * tests for hs_type_to_string
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

static char* hs_bool_to_string(lua_State *L)
{
    mu_assert("HS_BOOL does not result in 'boolean'!",
	      strcmp(hs_type_to_string(HS_BOOL), "boolean") == 0);
    return 0;
}

static char* hs_int_to_string(lua_State *L)
{
    mu_assert("HS_INT does not result in 'integer'!",
	      strcmp(hs_type_to_string(HS_INT), "integer") == 0);
    return 0;
}

static char* hs_num_to_string(lua_State *L)
{
    mu_assert("HS_NUM does not result in 'number'!",
	      strcmp(hs_type_to_string(HS_NUM), "number") == 0);
    return 0;
}

static char* hs_str_to_string(lua_State *L)
{
    mu_assert("HS_STR does not result in 'string'!",
	      strcmp(hs_type_to_string(HS_STR), "string") == 0);
    return 0;
}

static char* hs_tbl_to_string(lua_State *L)
{
    mu_assert("HS_TBL does not result in 'table'!",
	      strcmp(hs_type_to_string(HS_TBL), "table") == 0);
    return 0;
}

static char* hs_func_to_string(lua_State *L)
{
    mu_assert("HS_FUNC does not result in 'function'!",
	      strcmp(hs_type_to_string(HS_FUNC), "function") == 0);
    return 0;
}

static char* hs_cfunc_to_string(lua_State *L)
{
    mu_assert("HS_CFUNC does not result in 'C function'!",
	      strcmp(hs_type_to_string(HS_CFUNC), "C function") == 0);
    return 0;
}

static char* hs_user_to_string(lua_State *L)
{
    mu_assert("HS_USER does not result in 'userdata'!",
	      strcmp(hs_type_to_string(HS_USER), "userdata") == 0);
    return 0;
}

static char* hs_light_to_string(lua_State *L)
{
    mu_assert("HS_LIGHT does not result in 'light userdata'!",
	      strcmp(hs_type_to_string(HS_LIGHT), "light userdata") == 0);
    return 0;
}

static char* hs_nil_to_string(lua_State *L)
{
    mu_assert("HS_NIL does not result in 'nil'!",
	      strcmp(hs_type_to_string(HS_NIL), "nil") == 0);
    return 0;
}

static char* hs_any_to_string(lua_State *L)
{
    mu_assert("HS_ANY does not result in 'any'!",
	      strcmp(hs_type_to_string(HS_ANY), "any") == 0);
    return 0;
}


/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * tests for hs_pushstring
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

static char* push_noformat(lua_State *L)
{
    hs_pushstring(L, "a string");
    mu_assert("no string at top of stack!", lua_isstring(L, -1));
    const char *string = lua_tostring(L, -1);
    mu_assert("string != 'a string'", strcmp(string, "a string") == 0);
    return 0;
}

static char* push_formatint(lua_State *L)
{
    hs_pushstring(L, "%d is 5", 5);
    mu_assert("no string at top of stack!", lua_isstring(L, -1));
    const char *string = lua_tostring(L, -1);
    mu_assert("string != '5 is 5'", strcmp(string, "5 is 5") == 0);
    return 0;
}

static char* push_formatstring(lua_State *L)
{
    hs_pushstring(L, "%s is 'hello'", "hello");
    mu_assert("no string at top of stack!", lua_isstring(L, -1));
    const char *string = lua_tostring(L, -1);
    mu_assert("string != 'hello is 'hello''",
              strcmp(string, "hello is 'hello'") == 0);
    return 0;
}

/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * RUN TESTS
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

int main()
{
    printf("================ start tests ================\n\n");
    
    printf("running hs_type_to_string() tests...\n");
    mu_run_test("bool to string", hs_bool_to_string);
    mu_run_test("int to string", hs_int_to_string);
    mu_run_test("num to string", hs_num_to_string);
    mu_run_test("str to string", hs_str_to_string);
    mu_run_test("tbl to string", hs_tbl_to_string);
    mu_run_test("func to string", hs_func_to_string);
    mu_run_test("cfunc to string", hs_cfunc_to_string);
    mu_run_test("user to string", hs_user_to_string);
    mu_run_test("light to string", hs_light_to_string);
    mu_run_test("nil to string", hs_nil_to_string);
    mu_run_test("any to string", hs_any_to_string);
    
    printf("running hs_pushstring() tests...\n");
    mu_run_test("hs_pushstring (no printf formatting)", push_noformat);
    mu_run_test("hs_pushstring (integer formatting)", push_formatint);
    mu_run_test("hs_pushstring (string formatting)", push_formatstring);
    
    printf("\n=============== tests finished ===============\n\n");
    printf("ran %d tests, %d failed\n", tests_run, tests_failed);
    return 0;
}