# Path: graphviz/backend/execute.py
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[typing.Iterator[bytes]] = ...,
#               encoding: None = ...,
#               quiet: bool = ...,
#               **kwargs) -> subprocess.CompletedProcess:
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[typing.Iterator[str]] = ...,
#               encoding: str,
#               quiet: bool = ...,
#               **kwargs) -> subprocess.CompletedProcess:
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[BytesOrStrIterator] = ...,
#               encoding: typing.Optional[str] = ...,
#               capture_output: bool = ...,
#               quiet: bool = ...,
#               **kwargs) -> subprocess.CompletedProcess:
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[BytesOrStrIterator] = None,
#               encoding: typing.Optional[str] = None,
#               quiet: bool = False,
#               **kwargs) -> subprocess.CompletedProcess:
# def _run_input_lines(cmd, input_lines, *, kwargs):
# def _write_stderr(stderr) -> None:
#     def __init__(self, args) -> None:
#     def __str__(self) -> 'str':
# class ExecutableNotFound(RuntimeError):
# class CalledProcessError(subprocess.CalledProcessError):


import errno
import io
import subprocess
import pytest
import graphviz
import _common
from graphviz.backend import execute
    monkeypatch.setenv('PATH', '')


@pytest.mark.usefixtures('empty_path')
@pytest.mark.parametrize(
    'func, args',
    [(graphviz.render, ['dot', 'pdf', 'nonfilepath']),
     (graphviz.pipe, ['dot', 'pdf', b'nongraph']),
     (graphviz.unflatten, ['graph {}']),
     (graphviz.version, [])])
def test_missing_executable(func, args):
    with pytest.raises(graphviz.ExecutableNotFound, match=r'execute'):
        func(*args)


def test_run_check_oserror():
    with pytest.raises(OSError) as e:
        execute.run_check(_common.INVALID_CMD)

    assert e.value.errno in (errno.EACCES, errno.EINVAL)


def test_run_check_called_process_error_mocked(capsys, mock_run, quiet,
                                               stdout='I am the messiah',
                                               stderr='I am not the messiah!'):
    mock_run.return_value = subprocess.CompletedProcess(_common.INVALID_CMD,
                                                        returncode=500,
                                                        stdout=stdout,
                                                        stderr=stderr)
    with pytest.raises(execute.CalledProcessError, match=stderr):

# Path: graphviz/backend/execute.py
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[typing.Iterator[bytes]] = ...,
#               encoding: None = ...,
#               quiet: bool = ...,
#               **kwargs) -> subprocess.CompletedProcess:
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[typing.Iterator[str]] = ...,
#               encoding: str,
#               quiet: bool = ...,
#               **kwargs) -> subprocess.CompletedProcess:
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[BytesOrStrIterator] = ...,
#               encoding: typing.Optional[str] = ...,
#               capture_output: bool = ...,
#               quiet: bool = ...,
#               **kwargs) -> subprocess.CompletedProcess:
# def run_check(cmd: typing.Sequence[typing.Union[os.PathLike, str]], *,
#               input_lines: typing.Optional[BytesOrStrIterator] = None,
#               encoding: typing.Optional[str] = None,
#               quiet: bool = False,
#               **kwargs) -> subprocess.CompletedProcess:
# def _run_input_lines(cmd, input_lines, *, kwargs):
# def _write_stderr(stderr) -> None:
#     def __init__(self, args) -> None:
#     def __str__(self) -> 'str':
# class ExecutableNotFound(RuntimeError):
# class CalledProcessError(subprocess.CalledProcessError):


# Path: tests/backend/test_execute.py
import errno
import io
import subprocess
import pytest
import graphviz
import _common
from graphviz.backend import execute

    monkeypatch.setenv('PATH', '')


@pytest.mark.usefixtures('empty_path')
@pytest.mark.parametrize(
    'func, args',
    [(graphviz.render, ['dot', 'pdf', 'nonfilepath']),
     (graphviz.pipe, ['dot', 'pdf', b'nongraph']),
     (graphviz.unflatten, ['graph {}']),
     (graphviz.version, [])])
def test_missing_executable(func, args):
    with pytest.raises(graphviz.ExecutableNotFound, match=r'execute'):
        func(*args)


def test_run_check_oserror():
    with pytest.raises(OSError) as e:
        execute.run_check(_common.INVALID_CMD)

    assert e.value.errno in (errno.EACCES, errno.EINVAL)


def test_run_check_called_process_error_mocked(capsys, mock_run, quiet,
                                               stdout='I am the messiah',
                                               stderr='I am not the messiah!'):
    mock_run.return_value = subprocess.CompletedProcess(_common.INVALID_CMD,
                                                        returncode=500,
                                                        stdout=stdout,
                                                        stderr=stderr)
    with pytest.raises(execute.CalledProcessError, match=stderr):

        execute.run_check(_common.INVALID_CMD, capture_output=True,