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tests: i2s: Fix i2s_states_test test suite

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1. Update the way test_i2s_state_error_neg test handles
RX overflow.
2. Clean up after test_i2s_state_stopping_neg test in case the
receiving channel is stuck in the STOPPING State if the data
was received prior to calling the STOP trigger.

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
This commit is contained in:
Mahesh Mahadevan 2021-02-04 16:13:20 -06:00 • committed by Maureen Helm
commit 96fd76edda
1 changed files with 18 additions and 7 deletions
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25
tests/drivers/i2s/i2s_api/src/test_i2s_states.c
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@ -340,6 +340,12 @@ void test_i2s_state_stopping_neg(void)
ret = rx_block_read(dev_i2s_rx, 0);
zassert_equal(ret, TC_PASS, NULL);
/* This is incase the RX channel is stuck in STOPPING state.
* Clear out the state before running the next test.
*/
ret = i2s_trigger(dev_i2s_rx, I2S_DIR_RX, I2S_TRIGGER_DROP);
zassert_equal(ret, 0, "RX DROP trigger failed");
}
/** @brief Verify all failure cases in ERROR state.
@ -380,14 +386,19 @@ void test_i2s_state_error_neg(void)
/* Wait for transmission to finish */
k_sleep(K_MSEC(200));
/* Read all available data blocks in RX queue */
for (int i = 0; i < NUM_RX_BLOCKS; i++) {
ret = rx_block_read(dev_i2s_rx, 0);
zassert_equal(ret, TC_PASS, NULL);
}
/* Read one data block, expect success even if RX queue is already in
* the error state.
*/
ret = rx_block_read(dev_i2s_rx, 0);
zassert_equal(ret, TC_PASS, NULL);
/* Attempt to read one more data block, expect an error */
ret = i2s_buf_read(dev_i2s_rx, rx_buf, &rx_size);
/* Attempt to read more data blocks than are available in the RX queue */
for (int i = 0; i < NUM_RX_BLOCKS; i++) {
ret = i2s_buf_read(dev_i2s_rx, rx_buf, &rx_size);
if (ret != 0) {
break;
}
}
zassert_equal(ret, -EIO, "RX overrun error not detected");
/* Send invalid triggers, expect failure */