/**
* Test that Peek behaves
*/
void IOQueueTest::testPeek() {
uint8_t data1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
m_buffer->Write(data1, sizeof(data1));
OLA_ASSERT_EQ(9u, m_buffer->Size());
OLA_ASSERT_FALSE(m_buffer->Empty());
const unsigned int DATA_SIZE = 20;
uint8_t *output_data = new uint8_t[DATA_SIZE];
// peek at the first four bytes
unsigned int output_size = m_buffer->Peek(output_data, 4);
ASSERT_DATA_EQUALS(__LINE__, data1, 4, output_data, output_size);
OLA_ASSERT_EQ(9u, m_buffer->Size());
// peek at the first 9 bytes
output_size = m_buffer->Peek(output_data, 9);
ASSERT_DATA_EQUALS(__LINE__, data1, 9, output_data, output_size);
OLA_ASSERT_EQ(9u, m_buffer->Size());
// peek at more bytes that exist in the buffer
output_size = m_buffer->Peek(output_data, DATA_SIZE);
OLA_ASSERT_EQ(9u, output_size);
ASSERT_DATA_EQUALS(__LINE__, data1, sizeof(data1), output_data, output_size);
OLA_ASSERT_EQ(9u, m_buffer->Size());
// Now try a buffer with smaller blocks
MemoryBlockPool pool(4);
IOQueue queue(&pool);
queue.Write(data1, sizeof(data1));
OLA_ASSERT_EQ(9u, queue.Size());
// peek at he same amount as the first block size
output_size = queue.Peek(output_data, 4);
ASSERT_DATA_EQUALS(__LINE__, data1, 4, output_data, output_size);
OLA_ASSERT_EQ(9u, queue.Size());
OLA_ASSERT_FALSE(queue.Empty());
// peek at data from more than one block
output_size = queue.Peek(output_data, 6);
ASSERT_DATA_EQUALS(__LINE__, data1, 6, output_data, output_size);
OLA_ASSERT_EQ(9u, queue.Size());
OLA_ASSERT_FALSE(queue.Empty());
// peek at data on the two block boundry
output_size = queue.Peek(output_data, 8);
ASSERT_DATA_EQUALS(__LINE__, data1, 8, output_data, output_size);
OLA_ASSERT_EQ(9u, queue.Size());
OLA_ASSERT_FALSE(queue.Empty());
// peek at all the data
output_size = queue.Peek(output_data, 9);
ASSERT_DATA_EQUALS(__LINE__, data1, 9, output_data, output_size);
OLA_ASSERT_EQ(9u, queue.Size());
OLA_ASSERT_FALSE(queue.Empty());
// peek at more data than what exists
output_size = queue.Peek(output_data, DATA_SIZE);
OLA_ASSERT_EQ(9u, output_size);
ASSERT_DATA_EQUALS(__LINE__, data1, 9, output_data, output_size);
OLA_ASSERT_EQ(9u, queue.Size());
OLA_ASSERT_FALSE(queue.Empty());
delete[] output_data;
}
