import logging
import subprocess

import pytest
from flexmock import flexmock

from borgmatic import execute as module


def test_log_output_logs_each_line_separately():
    flexmock(module.logger).should_receive('log').with_args(logging.INFO, 'hi').once()
    flexmock(module.logger).should_receive('log').with_args(logging.INFO, 'there').once()
    flexmock(module).should_receive('exit_code_indicates_error').and_return(False)

    hi_process = subprocess.Popen(['echo', 'hi'], stdout=subprocess.PIPE)
    module.log_output(
        hi_process, hi_process.stdout, output_log_level=logging.INFO, error_on_warnings=False
    )

    there_process = subprocess.Popen(['echo', 'there'], stdout=subprocess.PIPE)
    module.log_output(
        there_process, there_process.stdout, output_log_level=logging.INFO, error_on_warnings=False
    )


def test_log_output_includes_error_output_in_exception():
    flexmock(module.logger).should_receive('log')
    flexmock(module).should_receive('exit_code_indicates_error').and_return(True)

    process = subprocess.Popen(['grep'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

    with pytest.raises(subprocess.CalledProcessError) as error:
        module.log_output(
            process, process.stdout, output_log_level=logging.INFO, error_on_warnings=False
        )

    assert error.value.returncode == 2
    assert error.value.output


def test_log_output_truncates_long_error_output():
    flexmock(module).ERROR_OUTPUT_MAX_LINE_COUNT = 0
    flexmock(module.logger).should_receive('log')
    flexmock(module).should_receive('exit_code_indicates_error').and_return(True)

    process = subprocess.Popen(['grep'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

    with pytest.raises(subprocess.CalledProcessError) as error:
        module.log_output(
            process, process.stdout, output_log_level=logging.INFO, error_on_warnings=False
        )

    assert error.value.returncode == 2
    assert error.value.output.startswith('...')


def test_log_output_with_no_output_logs_nothing():
    flexmock(module.logger).should_receive('log').never()
    flexmock(module).should_receive('exit_code_indicates_error').and_return(False)

    process = subprocess.Popen(['true'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
    module.log_output(
        process, process.stdout, output_log_level=logging.INFO, error_on_warnings=False
    )