/*----------------------------------------------------------
 *				HTBLA-Leonding
 * ---------------------------------------------------------
 * Author:			S. Schraml
 * ----------------------------------------------------------
 * Description:
 * Test functions for Roman Number.
 * ----------------------------------------------------------
 */

#include "test_roman_number.h"
#include "roman_number.h"

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

#include "shortcut.h"

char* number_strs[] = {"MDCCCCLXXXIIII", "CMXLIXIV", "V", "", "CXI", "CCLIX"};
int   number_vals[] = {1984, 953, 5, 0, 111, 259};
int   number_cnt = sizeof(number_vals) / sizeof(number_vals[0]);

struct Tuple {
    int x;
    int y;
    int exp_res;
};

static struct Tuple gdc_values[] = { 
    {111, 259, 37},
    { 12,   9,  3},
    { 23,  92, 23},
    {527, 899, 31},
    { 42,  42, 42},    
    { 83,  97,  1},
};
static int gdc_value_cnt = sizeof(gdc_values) / sizeof(gdc_values[0]);

TEST(test_create_with_valid_number) {
    for(int i = 0; i < number_cnt; i++) {
        RomanNumber result = rn_create(number_strs[i]);
        ASSERT_TRUE(rn_is_valid(result), MSG("Expected that string '%s' is be a valid number", number_strs[i]));
    }
}

TEST(test_create_with_invalid_number) {
    char* number = "MCDR";
    RomanNumber result = rn_create(number);
	ASSERT_TRUE(!rn_is_valid(result), MSG("Expected that string '%s' is not be a valid number", number));
}

TEST(test_create_with_null_string) {
    RomanNumber result = rn_create(0);
	ASSERT_TRUE(!rn_is_valid(result), MSG("Expected that NULL (%d) string is not a valid number", 0));
}

TEST(test_get_valid_value) {
    for(int i = 0; i < number_cnt; i++) {
        RomanNumber result = rn_create(number_strs[i]);
        int value = rn_get_value(result);
        ASSERT_TRUE(value == number_vals[i], MSG("Expected that string '%s' is converted to %d but retrieved %d", number_strs[i], number_vals[i], value));
    }
}

TEST(test_get_value_from_invalid_number) {
    char* number = "MCDR";
    RomanNumber result = rn_create(number);
    int value = rn_get_value(result);
	ASSERT_TRUE(value < 0, MSG("Expected that value of string '%s' is less than 0, but got %d", number, value));
}

TEST(test_calc_roman_gcd) {
    int exp_res = 37;
    RomanNumber x = rn_create(number_strs[4]);
    RomanNumber y = rn_create(number_strs[5]);
    RomanNumber result = rn_gcd(x, y);
	ASSERT_TRUE(rn_is_valid(result), MSG("Expected that result (%d) of GCD is a valid roman number", exp_res));
    int value = rn_get_value(result);
	ASSERT_TRUE(value == exp_res, MSG("Expected that result of GCD for strings '%s' and '%s' is '%d', but got '%d'", number_strs[4], number_strs[5], exp_res, value));
}

TEST(test_int_gdc) {
    for(int i = 0; i < gdc_value_cnt; i++) {
        int act_res = int_gcd(gdc_values[i].x, gdc_values[i].y);
        ASSERT_TRUE(act_res == gdc_values[i].exp_res, MSG("Expected that GDC of %d and %d is %d, but got %d", 
            gdc_values[i].x, gdc_values[i].y, gdc_values[i].exp_res, act_res));
    }
}