/** * @brief Adds byte to ring buffer. * @param data ^^ byte * Does not block. Ring buffer shold not be full. */ void RingBuffer_add(struct RingBuffer *self, uint8_t data) { assert(!RingBuffer_full(self)); self->buff[self->start++] = data; self->start %= BUFF_SIZE; self->empty = false; }
char *test_read_write() { RingBuffer_puts(rbuf, &test_data_0); mu_assert(rbuf->end == 6, "ends at not reset correctly"); mu_assert(RingBuffer_empty(rbuf) == 0, "not actually empty"); RingBuffer_puts(rbuf, &test_data_1); mu_assert(rbuf->end == 34, "ends at not reset correctly"); char *data_1 = malloc(sizeof(char) * 6); RingBuffer_read(rbuf, data_1, 6); mu_assert(bstrcmp(bfromcstr(data_1), &test_data_0) == 0, "read did not return proper string" ); mu_assert(rbuf->start == 6, "did not reset start correctly"); char *data_2 = malloc(sizeof(char) * 28); RingBuffer_read(rbuf, data_2, 28); mu_assert(bstrcmp(bfromcstr(data_2), &test_data_1) == 0, "read did not return proper string" ); mu_assert(rbuf->start == 0, "did not reset start correctly"); mu_assert(rbuf->end == 0, "did not reset end correctly"); RingBuffer_puts(rbuf, &test_data_2); RingBuffer_puts(rbuf, &test_data_3); mu_assert(rbuf->start == 0, "start not maintained"); mu_assert(rbuf->end == 64, "end not set correctly"); mu_assert(RingBuffer_full(rbuf) == 1, "RingBuffer actually full"); mu_assert(RingBuffer_available_space(rbuf) == 0, "RingBuffer has no space"); mu_assert(RingBuffer_available_data(rbuf) == 64, "RingBuffer has wrong available data"); bstring data_3 = RingBuffer_get_all(rbuf); bstring expected = bformat("%s%s", bdata(&test_data_2), bdata(&test_data_3)); mu_assert(bstrcmp(data_3, expected) == 0, "data not returned correctly"); mu_assert(RingBuffer_empty(rbuf) == 1, "RingBuffer should be empty"); return NULL; }