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#include "../../../src/lib/buffer.h"
#include "../../lib/runner.h"
TEST_MODULE(lib_buffer);
/******************************************************************************
*
* Fixture
*
******************************************************************************/
struct fixture
{
struct buffer buffer;
};
static void *setup(const MunitParameter params[], void *user_data)
{
struct fixture *f = munit_malloc(sizeof *f);
int rc;
(void)params;
(void)user_data;
rc = buffer__init(&f->buffer);
munit_assert_int(rc, ==, 0);
return f;
}
static void tear_down(void *data)
{
struct fixture *f = data;
buffer__close(&f->buffer);
free(f);
}
/******************************************************************************
*
* Helper macros.
*
******************************************************************************/
#define ADVANCE(SIZE) \
{ \
cursor = buffer__advance(&f->buffer, SIZE); \
munit_assert_ptr_not_null(cursor); \
}
/******************************************************************************
*
* Assertions.
*
******************************************************************************/
#define ASSERT_N_PAGES(N) munit_assert_int(f->buffer.n_pages, ==, N)
/******************************************************************************
*
* buffer__init
*
******************************************************************************/
TEST_SUITE(init);
TEST_SETUP(init, setup);
TEST_TEAR_DOWN(init, tear_down);
/* If n is 0, then the prefix is used to dermine the number of elements of the
* tuple. */
TEST_CASE(init, n_pages, NULL)
{
struct fixture *f = data;
(void)params;
ASSERT_N_PAGES(1);
munit_assert_long(f->buffer.page_size, ==, sysconf(_SC_PAGESIZE));
return MUNIT_OK;
}
/******************************************************************************
*
* buffer__advance
*
******************************************************************************/
TEST_SUITE(advance);
TEST_SETUP(advance, setup);
TEST_TEAR_DOWN(advance, tear_down);
/* The buffer already has enough capacity. */
TEST_CASE(advance, enough, NULL)
{
struct fixture *f = data;
void *cursor;
(void)params;
ADVANCE(16);
ASSERT_N_PAGES(1);
return MUNIT_OK;
}
/* The buffer needs to double its size once. */
TEST_CASE(advance, double, NULL)
{
struct fixture *f = data;
void *cursor;
(void)params;
ADVANCE(16 + f->buffer.page_size);
ASSERT_N_PAGES(2);
return MUNIT_OK;
}
/* The buffer needs to double its sice twice. */
TEST_CASE(advance, double_twice, NULL)
{
struct fixture *f = data;
void *cursor;
(void)params;
ADVANCE(16 + 3 * f->buffer.page_size);
ASSERT_N_PAGES(4);
return MUNIT_OK;
}
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