#include <assert.h>
#include "basic_testing.h"

#include "../chess_paths.h"

struct chessboard {
    unsigned int C;
    unsigned int R;
};

int value_at(const struct chessboard * c, unsigned int column, unsigned int row) {
    return column + row * c->C;
}

unsigned int columns(const struct chessboard * c) {
    return c->C;
}

unsigned int rows(const struct chessboard * c) {
    return c->R;
}

TEST(dec_pawn) {
    struct chessboard c = {.C = 10, .R = 10 };
    struct piece_position p;
    p.piece = PAWN;
    p.column = 0;
    p.row = 0;
    assert_uint_eq(decreasing_path_len(&c, &p), 0);
    assert_uint_eq(p.column, 0);
    assert_uint_eq(p.row, 0);
    TEST_PASSED;
}

TEST(dec_king) {
    struct chessboard c = {.C = 10, .R = 10 };
    struct piece_position p;
    p.piece = KING;
    p.column = 0;
    p.row = 0;
    assert_uint_eq(decreasing_path_len(&c, &p), 0);
    assert_uint_eq(p.column, 0);
    assert_uint_eq(p.row, 0);
    TEST_PASSED;
}

TEST(dec_queen) {
    struct chessboard c = {.C = 10, .R = 10 };
    struct piece_position p;
    p.piece = QUEEN;
    p.column = 0;
    p.row = 0;
    assert_uint_eq(decreasing_path_len(&c, &p), 0);
    assert_uint_eq(p.column, 0);
    assert_uint_eq(p.row, 0);
    TEST_PASSED;
}

TEST(dec_knight) {
    struct chessboard c = {.C = 10, .R = 10 };
    struct piece_position p;
    p.piece = KNIGHT;
    p.column = 0;
    p.row = 0;
    assert_uint_eq(decreasing_path_len(&c, &p), 0);
    assert_uint_eq(p.column, 0);
    assert_uint_eq(p.row, 0);
    TEST_PASSED;
}

TEST(dec_bishop) {
    struct chessboard c = {.C = 10, .R = 10 };
    struct piece_position p;
    p.piece = BISHOP;
    p.column = 0;
    p.row = 0;
    assert_uint_eq(decreasing_path_len(&c, &p), 0);
    assert_uint_eq(p.column, 0);
    assert_uint_eq(p.row, 0);
    TEST_PASSED;
}

TEST(dec_rook) {
    struct chessboard c = {.C = 10, .R = 10 };
    struct piece_position p;
    p.piece = ROOK;
    p.column = 0;
    p.row = 0;
    assert_uint_eq(decreasing_path_len(&c, &p), 0);
    assert_uint_eq(p.column, 0);
    assert_uint_eq(p.row, 0);
    TEST_PASSED;
}

int main() {
    RUN_TEST(dec_pawn);
    RUN_TEST(dec_king);
    RUN_TEST(dec_queen);
    RUN_TEST(dec_knight);
    RUN_TEST(dec_bishop);
    RUN_TEST(dec_rook);
    PRINT_TEST_RESULTS;
    assert(ALL_TESTS_PASSED);
}