#include <string.h>
#include <stdio.h>
#include "tokenizer.h"
#include "history.h"

/*
    The following is a simple testing script with a single example of input
    your code is expected to handle. The testing of your code should be more
    thorough and explore other input cases.
*/

#define TEST_TOKENIZER 1
#define TEST_HISTORY 1

/* MinUnit: http://www.jera.com/techinfo/jtns/jtn002.html */
 #define mu_assert(message, test) do { if (!(test)) return message; } while (0)
 #define mu_run_test(test) do { char *message = test(); tests_run++; if (message) return message; } while (0)
int tests_run;
/* end MinUnit */


/* Tokenizer test cases */
static char* test_string_length() {
    mu_assert("string_length('happy') == 5", string_length("happy") == 5);
    return 0;
}
static char* test_is_valid_character() {
    mu_assert("is_valid_character(' ') == 0", is_valid_character(' ') == 0);
    mu_assert("is_valid_character('h') == 1", is_valid_character('h') == 1);
    return 0;
}

static char* test_find_word_start() {
    char* str = "  happy";
    mu_assert("*find_word_start('  happy') == 'h'", *find_word_start(str) == 'h');
    return 0;
}

static char* test_find_word_end() {
    char* str = "happy joy";
    mu_assert("*find_word_end('happy joy') == ' '", *find_word_end(str) == ' ');
    return 0;
}

static char* test_count_words() {
    char* str = "happy happy joy joy";
    mu_assert("count_words('happy happy joy joy') == 4", count_words(str) == 4);
    return 0;
}

static char* test_tokenize() {
    char* str = "happy happy joy joy";
    char** tokens = tokenize(str);
    mu_assert("tokens[0] == 'happy'", strcmp(tokens[0], "happy") == 0);
    mu_assert("tokens[1] == 'happy'", strcmp(tokens[1], "happy") == 0);
    mu_assert("tokens[2] == 'joy'", strcmp(tokens[2], "joy") == 0);
    mu_assert("tokens[3] == 'joy'", strcmp(tokens[3], "joy") == 0);
    free_tokens(tokens);
    return 0;
}

/* History test cases */
static char* test_add_history() {
    List* list = init_history();
    add_history(list, "happy");
    mu_assert("add_history(list, 'happy')", strcmp(list->root->str, "happy") == 0);
    add_history(list, "joy");
    mu_assert("add_history(list, 'joy')", strcmp(list->root->next->str, "joy") == 0);
    return 0;
}

static char* test_get_history() {
    List* list = init_history();
    add_history(list, "happy");
    mu_assert("get_history(list, 1)", strcmp(get_history(list, 1), "happy") == 0);
    return 0;
}


static char* all_tests() {
    if (TEST_TOKENIZER) {
        mu_run_test(test_string_length);
        mu_run_test(test_is_valid_character);
        mu_run_test(test_find_word_start);
        mu_run_test(test_find_word_end);
        mu_run_test(test_count_words);
        mu_run_test(test_tokenize);
    }

    if (TEST_HISTORY) {
        mu_run_test(test_add_history);
        mu_run_test(test_get_history);
    }

    return 0;
}

 int main(int argc, char **argv) {
    char *result = all_tests();

    if (result != 0)
        printf("Failed test: %s\n", result);
    else
        printf("ALL TESTS PASSED\n");

    printf("Tests run: %d\n", tests_run);

    return result != 0;
 }