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import io
import re
import subprocess
import pytest
import graphviz
import _common
SVG_PATTERN = r'(?s)^<\?xml .+</svg>\s*$'
@pytest.mark.exe
@pytest.mark.xfail('graphviz.version() == (2, 36, 0)',
reason='https://bugs.launchpad.net/ubuntu/+source/graphviz/+bug/1694108')
def test_pipe_invalid_data(capsys, quiet, engine='dot', format_='svg'):
with pytest.raises(subprocess.CalledProcessError) as e:
graphviz.pipe(engine, format_, b'nongraph', quiet=quiet)
assert e.value.returncode == 1
assert 'syntax error in line' in str(e.value)
out, err = capsys.readouterr()
assert out == ''
if quiet:
assert err == ''
else:
assert 'syntax error in line' in err
def test_pipe_pipe_invalid_data_mocked(mocker, sentinel, mock_run, quiet):
mock_sys_stderr = mocker.patch('sys.stderr', autospec=True,
flush=mocker.Mock(),
encoding=sentinel.encoding)
mock_out = mocker.create_autospec(bytes, instance=True, name='mock_out')
mock_err = mocker.create_autospec(bytes, instance=True, name='mock_err',
**{'__len__.return_value': 1})
mock_run.return_value = subprocess.CompletedProcess(_common.INVALID_CMD,
returncode=5,
stdout=mock_out,
stderr=mock_err)
with pytest.raises(subprocess.CalledProcessError) as e:
graphviz.pipe('dot', 'png', b'nongraph', quiet=quiet)
assert e.value.returncode == 5
assert e.value.cmd == _common.INVALID_CMD
assert e.value.stdout is mock_out
assert e.value.stderr is mock_err
e.value.stdout = sentinel.new_stdout
assert e.value.stdout is sentinel.new_stdout
mock_run.assert_called_once_with([_common.EXPECTED_DOT_BINARY,
'-Kdot', '-Tpng'],
input=b'nongraph',
capture_output=True,
startupinfo=_common.StartupinfoMatcher())
if not quiet:
mock_out.decode.assert_not_called()
mock_err.decode.assert_called_once_with(sentinel.encoding)
mock_sys_stderr.write.assert_called_once_with(mock_err.decode.return_value)
mock_sys_stderr.flush.assert_called_once_with()
@pytest.mark.exe
@pytest.mark.parametrize(
'engine, format_, renderer, formatter, pattern',
[('dot', 'svg', None, None, SVG_PATTERN),
('dot', 'ps', 'ps', 'core', r'%!PS-'),
# Error: remove_overlap: Graphviz not built with triangulation library
pytest.param('sfdp', 'svg', None, None, SVG_PATTERN,
marks=pytest.mark.xfail('graphviz.version() > (2, 38, 0)'
" and platform.system().lower() == 'windows'",
reason='https://gitlab.com/graphviz/graphviz/-/issues/1269'))])
def test_pipe(capsys, engine, format_, renderer, formatter, pattern,
data=b'graph { spam }'):
with pytest.deprecated_call(match=r'3 positional args'):
out = graphviz.pipe(engine, format_, data,
renderer, formatter).decode('ascii')
if pattern is not None:
assert re.match(pattern, out)
assert capsys.readouterr() == ('', '')
def test_pipe_mocked(capsys, mock_run, quiet):
mock_run.return_value = subprocess.CompletedProcess(_common.INVALID_CMD,
returncode=0,
stdout=b'stdout',
stderr=b'stderr')
assert graphviz.pipe('dot', 'png', b'nongraph',
quiet=quiet) == b'stdout'
mock_run.assert_called_once_with([_common.EXPECTED_DOT_BINARY,
'-Kdot', '-Tpng'],
input=b'nongraph',
capture_output=True,
startupinfo=_common.StartupinfoMatcher())
assert capsys.readouterr() == ('', '' if quiet else 'stderr')
def test_pipe_string_mocked(capsys, mock_run, quiet,
encoding='ascii'):
mock_run.return_value = subprocess.CompletedProcess(_common.INVALID_CMD,
returncode=0,
stdout='stdout',
stderr='stderr')
assert graphviz.pipe_string('dot', 'png', 'nongraph',
encoding=encoding, quiet=quiet) == 'stdout'
mock_run.assert_called_once_with([_common.EXPECTED_DOT_BINARY, '-Kdot', '-Tpng'],
input='nongraph',
encoding=encoding,
capture_output=True,
startupinfo=_common.StartupinfoMatcher())
assert capsys.readouterr() == ('', '' if quiet else 'stderr')
def test_pipe_lines_mocked(capsys, mock_popen, quiet,
input_encoding='ascii'):
proc = mock_popen.return_value
proc.configure_mock(args=_common.EXPECTED_DOT_BINARY,
returncode=0,
stdin=io.BytesIO(),
stdout=io.BytesIO(b'stdout'),
stderr=io.BytesIO(b'stderr'))
proc.communicate.side_effect = lambda: (proc.stdout.read(), proc.stderr.read())
assert graphviz.pipe_lines('dot', 'png', iter(['nongraph\n']),
input_encoding=input_encoding,
quiet=quiet) == b'stdout'
assert proc.stdin.getvalue() == b'nongraph\n'
mock_popen.assert_called_once_with([_common.EXPECTED_DOT_BINARY,
'-Kdot', '-Tpng'],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
startupinfo=_common.StartupinfoMatcher())
assert capsys.readouterr() == ('', '' if quiet else 'stderr')
def test_pipe_lines_string_mocked(capsys, mock_popen, quiet,
encoding='ascii'):
proc = mock_popen.return_value
proc.configure_mock(args=_common.INVALID_CMD,
returncode=0,
stdin=io.StringIO(),
stdout=io.StringIO('stdout'),
stderr=io.StringIO('stderr'))
proc.communicate.side_effect = lambda: (proc.stdout.read(), proc.stderr.read())
assert graphviz.pipe_lines_string('dot', 'png', iter(['nongraph\n']),
encoding=encoding,
quiet=quiet) == 'stdout'
assert proc.stdin.getvalue() == 'nongraph\n'
mock_popen.assert_called_once_with([_common.EXPECTED_DOT_BINARY,
'-Kdot', '-Tpng'],
encoding=encoding,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
startupinfo=_common.StartupinfoMatcher())
assert capsys.readouterr() == ('', '' if quiet else 'stderr')
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