def test_run_joins_stdout_and_stderr_on_request(run_mock):
run_mock.return_value.stdout = 'foo'
run_mock.return_value.stderr = ''
subproc.run(['foo'], join_stderr=True)
assert run_mock.call_args_list == [
call(
('foo', ),
shell=False,
encoding='utf-8',
stdout='Mocked PIPE',
stderr='Mocked STDOUT',
stdin='Mocked PIPE',
)
]
def test_run_returns_stdout(run_mock):
run_mock.return_value.stderr = ''
run_mock.return_value.stdout = 'process output'
stdout = subproc.run(['foo', 'bar', '--baz'])
assert stdout == 'process output'
assert run_mock.call_args_list == [
call(
('foo', 'bar', '--baz'),
shell=False,
encoding='utf-8',
stdout='Mocked PIPE',
stderr='Mocked PIPE',
stdin='Mocked PIPE',
)
]
def test_run_caches_stdout_on_request(run_mock):
run_mock.return_value.stderr = ''
run_mock.return_value.stdout = 'process output'
for _ in range(5):
assert subproc.run(['foo', 'bar', '--baz'],
cache=True) == 'process output'
assert run_mock.call_args_list == [
call(
('foo', 'bar', '--baz'),
shell=False,
encoding='utf-8',
stdout='Mocked PIPE',
stderr='Mocked PIPE',
stdin='Mocked PIPE',
)
]
def test_run_ignores_stderr_on_request(run_mock):
run_mock.return_value.stderr = 'something went wrong'
run_mock.return_value.stdout = 'process output'
stdout = subproc.run(('foo', 'bar', '--baz'), ignore_errors=True)
assert stdout == 'process output'
def test_run_raises_ProcessError_if_stderr_is_truthy(run_mock):
run_mock.return_value.stderr = 'something went wrong'
run_mock.return_value.stdout = 'process output'
with pytest.raises(errors.ProcessError, match=r'^something went wrong$'):
subproc.run(('foo', 'bar', '--baz'))
def test_run_raises_DependencyError_if_command_cannot_be_executed(run_mock):
run_mock.side_effect = OSError()
with pytest.raises(errors.DependencyError,
match=r'^Missing dependency: foo$'):
subproc.run(['foo', 'bar', '--baz'])