/*

* geometry_test.c

* Andy Sayler

* CSCI 3308

* Summer 2014

*

* This file containsunit tests for geometry.c

*

* Requires http://check.sourceforge.net/

*

*/

#include <stdlib.h>

#include <check.h>

#include "geometry.h"

/* coord_2d_eq Test */

START_TEST(test_2d_eq)

{

coord_2d_t a;

coord_2d_t b;

a.x = b.x = 0;

a.y = b.y = 0;

ck_assert(coord_2d_eq(&a, &b));

a.x = b.x = 9.99;

a.y = b.y = 9.99;

ck_assert(coord_2d_eq(&a, &b));

a.x = b.x = 3.33;

a.y = b.y = 9.99;

ck_assert(coord_2d_eq(&a, &b));

a.x = 3.33;

a.y = 9.99;

b.x = 3.33;

b.y = 10.99;

ck_assert(!coord_2d_eq(&a, &b));

a.x = 3.33;

a.y = 9.99;

b.x = 2.33;

b.y = 9.99;

ck_assert(!coord_2d_eq(&a, &b));

a.x = 1.11;

a.y = 2.22;

b.x = 7.77;

b.y = 8.88;

ck_assert(!coord_2d_eq(&a, &b));

}

END_TEST

/* coord_2d_dist Test */

START_TEST(test_2d_dist)

{

coord_2d_t a;

coord_2d_t b;

a.x = b.x = 0;

a.y = b.y = 0;

ck_assert(coord_2d_dist(&a, &b) == 0.0);

a.x = 0;

a.y = 0;

b.x = 3;

b.y = 0;

ck_assert(coord_2d_dist(&a, &b) == 3.0);

a.x = 0;

a.y = 0;

b.x = 0;

b.y = 3;

ck_assert(coord_2d_dist(&a, &b) == 3.0);

a.x = 0;

a.y = 0;

b.x = 3;

b.y = 4;

ck_assert(coord_2d_dist(&a, &b) == 5.0);

a.x = 1;

a.y = 2;

b.x = 4;

b.y = 6;

ck_assert(coord_2d_dist(&a, &b) == 5.0);

}

END_TEST

START_TEST(test_2d_area_triangle) {

coord_2d_t a;

coord_2d_t b;

coord_2d_t c;

a.x = 25;

a.y = 0;

b.x = 35;

b.y = 40;

c.x = 51;

c.y = 20;

ck_assert(coord_2d_area_triangle(&a, &b, &c) == 420.0);

a.x = 15;

a.y = 20;

b.x = 27;

b.y = 42;

c.x = 32;

c.y = 12;

ck_assert(coord_2d_area_triangle(&a, &b, &c) == 235.0);

}

END_TEST

/* coord_2d_midpoint Test */

START_TEST(test_2d_midpoint)

{

coord_2d_t a;

coord_2d_t b;

coord_2d_t mid;

coord_2d_t exp;

a.x = b.x = 0;

a.y = b.y = 0;

coord_2d_midpoint(&mid, &a, &b);

exp.x = 0;

exp.y = 0;

ck_assert(coord_2d_eq(&mid, &exp));

a.x = 0;

a.y = 0;

b.x = 3;

b.y = 0;

coord_2d_midpoint(&mid, &a, &b);

exp.x = 1.5;

exp.y = 0;

ck_assert(coord_2d_eq(&mid, &exp));

a.x = 0;

a.y = 0;

b.x = 0;

b.y = 3;

coord_2d_midpoint(&mid, &a, &b);

exp.x = 0;

exp.y = 1.5;

ck_assert(coord_2d_eq(&mid, &exp));

a.x = 0;

a.y = 0;

b.x = 3;

b.y = 3;

coord_2d_midpoint(&mid, &a, &b);

exp.x = 1.5;

exp.y = 1.5;

ck_assert(coord_2d_eq(&mid, &exp));

a.x = 1;

a.y = 2;

b.x = 3;

b.y = 4;

coord_2d_midpoint(&mid, &a, &b);

exp.x = 2;

exp.y = 3;

ck_assert(coord_2d_eq(&mid, &exp));

}

END_TEST

/* coord_2d Test Suite */

Suite* coord_2d_suite(void)

{

/* Create Suite */

Suite* s = suite_create("coord_2d");

/* Setup Test Cases */

TCase* tc_2d_eq = tcase_create("coord_2d_eq");

tcase_add_test(tc_2d_eq, test_2d_eq);

TCase* tc_2d_dist = tcase_create("coord_2d_dist");

tcase_add_test(tc_2d_dist, test_2d_dist);

TCase* tc_2d_midpoint = tcase_create("coord_2d_midpoint");

tcase_add_test(tc_2d_midpoint, test_2d_midpoint);

TCase* tc_2d_area_triangle = tcase_create("coord_2d_area_triangle");

tcase_add_test(tc_2d_area_triangle, test_2d_area_triangle);

/* Add Cases to Suite */

suite_add_tcase(s, tc_2d_eq);

suite_add_tcase(s, tc_2d_dist);

suite_add_tcase(s, tc_2d_midpoint);

suite_add_tcase(s, tc_2d_area_triangle);

/* Return Suite */

return s;

}

/* main: run test suites and set exit status */

int main(void){

int failed = 0;

Suite* s = coord_2d_suite();

SRunner* sr = srunner_create(s);

srunner_run_all(sr, CK_VERBOSE);

failed = srunner_ntests_failed(sr);

srunner_free(sr);

return (failed ? EXIT_FAILURE : EXIT_SUCCESS);

}