from __future__ import annotations

import unittest

from src.jupyter_runtime import (
    clean_terminal_output,
    extract_terminal_command_output,
)


class TestJupyterRuntimeOutputFiltering(unittest.TestCase):
    def test_extract_terminal_command_output_drops_wrapper_echo(self) -> None:
        start_marker = '__ZK_AGENT_START_test__'
        raw = (
            'root@host:/workspace# mkdir -p /workspace && cd /workspace && '
            'printf "\\n__ZK_AGENT_START_test__\\n"; '
            '( setsid bash -lc \'export A=1; echo real-output\' ) &\r\n'
            f'{start_marker}\r\n'
            'real-output\r\n'
        )

        output = extract_terminal_command_output(
            clean_terminal_output(raw),
            start_marker=start_marker,
        )

        self.assertEqual(output, 'real-output')

    def test_extract_terminal_command_output_uses_last_marker(self) -> None:
        start_marker = '__ZK_AGENT_START_test__'
        output = extract_terminal_command_output(
            f'echo text containing {start_marker}\n{start_marker}\nactual',
            start_marker=start_marker,
        )

        self.assertEqual(output, 'actual')


if __name__ == '__main__':
    unittest.main()