#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_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_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;
}