diff options
Diffstat (limited to 'test/regression/buffer-discard.c')
-rw-r--r-- | test/regression/buffer-discard.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/test/regression/buffer-discard.c b/test/regression/buffer-discard.c new file mode 100644 index 0000000..d3eefb8 --- /dev/null +++ b/test/regression/buffer-discard.c @@ -0,0 +1,67 @@ +#include <stdio.h> +#include <string.h> + +#include <parserutils/parserutils.h> +#include <parserutils/utils/buffer.h> + +#include "utils/utils.h" + +#include "testutils.h" + +#define BUFF_LEN 2000 + +int main(int argc, char **argv) +{ + uint8_t data[BUFF_LEN]; + parserutils_buffer *buf; + int i; + + UNUSED(argc); + UNUSED(argv); + + assert(parserutils_buffer_create(&buf) == PARSERUTILS_OK); + + /* Populate the data with '4's */ + for (i = 0; i < BUFF_LEN; i++) + data[i] = '4'; + + assert(parserutils_buffer_append(buf, data, BUFF_LEN) == + PARSERUTILS_OK); + + /* Double the size, appending 'c's */ + for (i = 0; i < BUFF_LEN; i++) + data[i] = 'c'; + + assert(parserutils_buffer_append(buf, data, BUFF_LEN) == + PARSERUTILS_OK); + assert(buf->length == 2 * BUFF_LEN); + + /* Now reduce the length by half */ + /* Buffer length is all '4's now */ + buf->length = BUFF_LEN; + + /* Now discard half of the 4s from the middle of the buffer */ + assert(parserutils_buffer_discard(buf, BUFF_LEN / 4, BUFF_LEN / 2) == + PARSERUTILS_OK); + + /* Now check that the length is what we expect */ + assert(buf->length == BUFF_LEN / 2); + + /* Now check that the buffer contains what we expect */ + for (i = 0; i < BUFF_LEN / 2; i++) + assert(buf->data[i] == '4'); + + /* Now check that the space we allocated beyond the buffer length is + * as we expect, and not overwritten with 'c', which should be beyond + * what the buffer_ code is allowed to move. */ + for (i = BUFF_LEN / 2; i < BUFF_LEN; i++) + assert(buf->data[i] != 'c'); + + + assert(parserutils_buffer_destroy(buf) == PARSERUTILS_OK); + + printf("PASS\n"); + + return 0; +} + |