b38292cd69
Add a circular buffer implementation, to factorize multiple specific queues implementation.
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
#include <assert.h>
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#include <string.h>
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#include "cbuf.h"
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struct int_queue CBUF(int, 32);
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static void test_cbuf_empty(void) {
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struct int_queue queue;
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cbuf_init(&queue);
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assert(cbuf_is_empty(&queue));
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bool push_ok = cbuf_push(&queue, 42);
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assert(push_ok);
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assert(!cbuf_is_empty(&queue));
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int item;
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bool take_ok = cbuf_take(&queue, &item);
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assert(take_ok);
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assert(cbuf_is_empty(&queue));
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bool take_empty_ok = cbuf_take(&queue, &item);
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assert(!take_empty_ok); // the queue is empty
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}
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static void test_cbuf_full(void) {
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struct int_queue queue;
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cbuf_init(&queue);
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assert(!cbuf_is_full(&queue));
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// fill the queue
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for (int i = 0; i < 32; ++i) {
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bool ok = cbuf_push(&queue, i);
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assert(ok);
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}
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bool ok = cbuf_push(&queue, 42);
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assert(!ok); // the queue if full
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int item;
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bool take_ok = cbuf_take(&queue, &item);
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assert(take_ok);
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assert(!cbuf_is_full(&queue));
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}
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static void test_cbuf_push_take(void) {
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struct int_queue queue;
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cbuf_init(&queue);
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bool push1_ok = cbuf_push(&queue, 42);
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assert(push1_ok);
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bool push2_ok = cbuf_push(&queue, 35);
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assert(push2_ok);
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int item;
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bool take1_ok = cbuf_take(&queue, &item);
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assert(take1_ok);
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assert(item == 42);
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bool take2_ok = cbuf_take(&queue, &item);
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assert(take2_ok);
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assert(item == 35);
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}
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int main(void) {
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test_cbuf_empty();
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test_cbuf_full();
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test_cbuf_push_take();
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return 0;
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}
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