diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/test/test_fifo.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/test/test_fifo.c b/test/test/test_fifo.c index f9bfc5f03..0a5f4d3b9 100644 --- a/test/test/test_fifo.c +++ b/test/test/test_fifo.c @@ -292,3 +292,27 @@ void test_full(void) // write info } + +void test_rd_idx_wrap() +{ + tu_fifo_t ff10; + uint8_t buf[10]; + uint8_t dst[10]; + + tu_fifo_config(&ff10, buf, 10, 1, 1); + + uint16_t n; + + ff10.wr_idx = 6; + ff10.rd_idx = 15; + + n = tu_fifo_read_n(&ff10, dst, 4); + TEST_ASSERT_EQUAL(n, 4); + TEST_ASSERT_EQUAL(ff10.rd_idx, 0); + n = tu_fifo_read_n(&ff10, dst, 4); + TEST_ASSERT_EQUAL(n, 4); + TEST_ASSERT_EQUAL(ff10.rd_idx, 4); + n = tu_fifo_read_n(&ff10, dst, 4); + TEST_ASSERT_EQUAL(n, 2); + TEST_ASSERT_EQUAL(ff10.rd_idx, 6); +}
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