erc-c/tests/vm_screen.c

/*
 * vm_screen.c
 *
 * Generally speaking the tests here are very incomplete; this is partly
 * because a lot of the code in vm_screen depends on a third-party
 * graphics library, but I think we can do a better job of decoupling
 * some concepts (like screen areas) from the graphics library, such
 * that we can make the code that uses those testable.
 */

#include <criterion/criterion.h>

#include "vm_screen.h"

static vm_screen *screen;

static void
setup()
{
    screen = vm_screen_create();
}

static void
teardown()
{
    vm_screen_free(screen);
}

TestSuite(vm_screen, .init = setup, .fini = teardown);

Test(vm_screen, create) {
    cr_assert_neq(screen, NULL);

    cr_assert_eq(screen->window, NULL);
    cr_assert_eq(screen->render, NULL);
    cr_assert_eq(screen->xcoords, 0);
    cr_assert_eq(screen->ycoords, 0);
}

Test(vm_screen, xcoords)
{
    screen->xcoords = 123;
    cr_assert_eq(screen->xcoords, 123);
    screen->xcoords = 234;
    cr_assert_eq(screen->xcoords, 234);
}

Test(vm_screen, ycoords)
{
    screen->ycoords = 123;
    cr_assert_eq(screen->ycoords, 123);
    screen->ycoords = 234;
    cr_assert_eq(screen->ycoords, 234);
}

Test(vm_screen, area_set)
{
    vm_area area;

    vm_area_set(&area, 1, 2, 3, 4);
    cr_assert_eq(area.xoff, 1);
    cr_assert_eq(area.yoff, 2);
    cr_assert_eq(area.width, 3);
    cr_assert_eq(area.height, 4);
}