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#include <gtest/gtest.h>
extern "C" {
#include "ringbuffer.h"
#include "osi.h"
}
TEST(RingbufferTest, test_new_simple) {
ringbuffer_t *rb = ringbuffer_init(4096);
ASSERT_TRUE(rb != NULL);
EXPECT_EQ(4096, ringbuffer_available(rb));
EXPECT_EQ(0, ringbuffer_size(rb));
ringbuffer_free(rb);
}
TEST(RingbufferTest, test_insert_basic) {
ringbuffer_t *rb = ringbuffer_init(16);
uint8_t buffer[10] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A};
ringbuffer_insert(rb, buffer, 10);
EXPECT_EQ(10, ringbuffer_size(rb));
EXPECT_EQ(6, ringbuffer_available(rb));
uint8_t peek[10] = {0};
size_t peeked = ringbuffer_peek(rb, peek, 10);
EXPECT_EQ(10, ringbuffer_size(rb)); // Ensure size doesn't change
EXPECT_EQ(6, ringbuffer_available(rb));
EXPECT_EQ(10, peeked);
ASSERT_TRUE(0 == memcmp(buffer, peek, peeked));
ringbuffer_free(rb);
}
TEST(RingbufferTest, test_insert_full) {
ringbuffer_t *rb = ringbuffer_init(5);
uint8_t aa[] = {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA};
uint8_t bb[] = {0xBB, 0xBB, 0xBB, 0xBB, 0xBB};
uint8_t peek[5] = {0};
size_t added = ringbuffer_insert(rb, aa, 7);
EXPECT_EQ(5, added);
EXPECT_EQ(0, ringbuffer_available(rb));
EXPECT_EQ(5, ringbuffer_size(rb));
added = ringbuffer_insert(rb, bb, 5);
EXPECT_EQ(0, added);
EXPECT_EQ(0, ringbuffer_available(rb));
EXPECT_EQ(5, ringbuffer_size(rb));
size_t peeked = ringbuffer_peek(rb, peek, 5);
EXPECT_EQ(5, peeked);
EXPECT_EQ(0, ringbuffer_available(rb));
EXPECT_EQ(5, ringbuffer_size(rb));
ASSERT_TRUE(0 == memcmp(aa, peek, peeked));
ringbuffer_free(rb);
}
TEST(RingbufferTest, test_multi_insert_delete) {
ringbuffer_t *rb = ringbuffer_init(16);
EXPECT_EQ(16, ringbuffer_available(rb));
EXPECT_EQ(0, ringbuffer_size(rb));
// Insert some bytes
uint8_t aa[] = {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA};
size_t added = ringbuffer_insert(rb, aa, sizeof(aa));
EXPECT_EQ(8, added);
EXPECT_EQ(8, ringbuffer_available(rb));
EXPECT_EQ(8, ringbuffer_size(rb));
uint8_t bb[] = {0xBB, 0xBB, 0xBB, 0xBB, 0xBB};
ringbuffer_insert(rb, bb, sizeof(bb));
EXPECT_EQ(3, ringbuffer_available(rb));
EXPECT_EQ(13, ringbuffer_size(rb));
uint8_t content[] = {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xBB, 0xBB, 0xBB, 0xBB, 0xBB};
uint8_t peek[16] = {0};
size_t peeked = ringbuffer_peek(rb, peek, 16);
EXPECT_EQ(13, peeked);
ASSERT_TRUE(0 == memcmp(content, peek, peeked));
// Delete some bytes
ringbuffer_delete(rb, sizeof(aa));
EXPECT_EQ(11, ringbuffer_available(rb));
EXPECT_EQ(5, ringbuffer_size(rb));
// Add some more to wrap buffer
uint8_t cc[] = {0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC};
ringbuffer_insert(rb, cc, sizeof(cc));
EXPECT_EQ(2, ringbuffer_available(rb));
EXPECT_EQ(14, ringbuffer_size(rb));
uint8_t content2[] = {0xBB, 0xBB, 0xBB, 0xBB, 0xBB, 0xCC, 0xCC};
peeked = ringbuffer_peek(rb, peek, 7);
EXPECT_EQ(7, peeked);
ASSERT_TRUE(0 == memcmp(content2, peek, peeked));
// Pop buffer
memset(peek, 0, 16);
size_t popped = ringbuffer_pop(rb, peek, 7);
EXPECT_EQ(7, popped);
EXPECT_EQ(9, ringbuffer_available(rb));
ASSERT_TRUE(0 == memcmp(content2, peek, peeked));
// Add more again to check head motion
uint8_t dd[] = { 0xDD, 0xDD, 0xDD, 0xDD, 0xDD, 0xDD, 0xDD, 0xDD };
added = ringbuffer_insert(rb, dd, sizeof(dd));
EXPECT_EQ(8, added);
EXPECT_EQ(1, ringbuffer_available(rb));
// Delete everything
ringbuffer_delete(rb, 16);
EXPECT_EQ(16, ringbuffer_available(rb));
EXPECT_EQ(0, ringbuffer_size(rb));
// Add small token
uint8_t ae[] = { 0xAE, 0xAE, 0xAE };
added = ringbuffer_insert(rb, ae, sizeof(ae));
EXPECT_EQ(13, ringbuffer_available(rb));
// Get everything
popped = ringbuffer_pop(rb, peek, 16);
EXPECT_EQ(added, popped);
EXPECT_EQ(16, ringbuffer_available(rb));
EXPECT_EQ(0, ringbuffer_size(rb));
ASSERT_TRUE(0 == memcmp(ae, peek, popped));
ringbuffer_free(rb);
}
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