Issues with expect? (RDT-1317)

[evandavey]

I am using pytest with ESP-IDF v5.4.1 to run some automated tests. My test_app is setup to just run unity_run_menu();

I want to extract the device id for a test report so I have written a test to print it. This is my pytest to first check the Device ID is printed (before I attempt to write a regex to extract it). The tests correctly upload and run, I can see the device_id test being selected and the correct device ID being output. However pytest is unable to parse the output and I just see "Enter next test, or 'enter' to see menu" in the buffer of the error message (like this was the only line expect tried to parse).

I have tried various methods for extracting the full output for parsing without success e.g. dut.read(...) as they don't seem supported.

import pytest
from pytest_embedded import Dut
import re

@pytest.mark.supported_targets
@pytest.mark.generic
def test_device_id(dut: Dut) -> None:
    dut.run_all_single_board_cases(name='device_id')
   
    # Wait for the output with a timeout
    dut.expect('Device ID:'), timeout=20)
  

[evandavey]

This appears to be an issues with run_all_single_board_cases consuming all the output. This works (where 9 is the number of the device_id test in the menu), but is a much less robust approach.

@pytest.mark.supported_targets
@pytest.mark.generic
def test_device_id(dut: Dut) -> None:
    dut.expect("Press ENTER to see the list of tests")
    dut.write(( "9\n")
    
    match = dut.expect(r'Device ID: ([0-9A-F]{20})', timeout=20)
    if match and match.group(1):
        device_id = match.group(1).decode('utf-8')
        print(f"Extracted Device ID: {device_id}")
    else:
        pytest.fail("Device ID format incorrect or not captured.")

[horw]

Hello, can you please provide the logs for this test case?

import pytest
from pytest_embedded import Dut
import re

@pytest.mark.supported_targets
@pytest.mark.generic
def test_device_id(dut: Dut) -> None:
dut.run_all_single_board_cases(name='device_id')

# Wait for the output with a timeout
dut.expect('Device ID:'), timeout=20)

[horw]

@evandavey Hello, as I understand your issue, it seems like a feature request to make "expect" possible for an entire file, is that correct?
Currently, every expect call clears the buffer, so it is not possible to retrieve information from the beginning.
The current behavior can actually be considered as expected.