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add test_write_double_overflowed for fifo

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hathach 2022-12-09 15:39:57 +07:00
parent 3e32fa36b8
commit 75989673e5
1 changed files with 29 additions and 1 deletions
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30
test/unit-test/test/test_fifo.c
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@ -138,6 +138,34 @@ void test_write_n(void)
TEST_ASSERT_EQUAL(24, tu_fifo_count(ff));
}
void test_write_double_overflowed(void)
{
tu_fifo_set_overwritable(ff, true);
uint8_t rd_buf[FIFO_SIZE] = { 0 };
uint8_t* buf = test_data;
// full
buf += tu_fifo_write_n(ff, buf, FIFO_SIZE);
TEST_ASSERT_EQUAL(FIFO_SIZE, tu_fifo_count(ff));
// write more, should still full
buf += tu_fifo_write_n(ff, buf, FIFO_SIZE-8);
TEST_ASSERT_EQUAL(FIFO_SIZE, tu_fifo_count(ff));
// double overflowed: in total, write more than > 2*FIFO_SIZE
buf += tu_fifo_write_n(ff, buf, 16);
TEST_ASSERT_EQUAL(FIFO_SIZE, tu_fifo_count(ff));
// reading back should give back data from last FIFO_SIZE write
tu_fifo_read_n(ff, rd_buf, FIFO_SIZE);
TEST_ASSERT_EQUAL_MEMORY(buf-16, rd_buf+FIFO_SIZE-16, 16);
// TODO whole buffer should match, but we deliberately not implement it
// TEST_ASSERT_EQUAL_MEMORY(buf-FIFO_SIZE, rd_buf, FIFO_SIZE);
}
static uint16_t help_write(uint16_t total, uint16_t n)
{
tu_fifo_write_n(ff, test_data, n);
@ -149,7 +177,7 @@ static uint16_t help_write(uint16_t total, uint16_t n)
return total;
}
void test_write_overwritable(void)
void test_write_overwritable2(void)
{
tu_fifo_set_overwritable(ff, true);