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from contextlib import contextmanager
import os
from mako.cmd import cmdline
from test import eq_
from test import mock
from test import raises
from test import template_base
from test import TemplateTest
class CmdTest(TemplateTest):
@contextmanager
def _capture_output_fixture(self, stream="stdout"):
with mock.patch("sys.%s" % stream) as stdout:
yield stdout
def test_stdin_success(self):
with self._capture_output_fixture() as stdout:
with mock.patch(
"sys.stdin",
mock.Mock(read=mock.Mock(return_value="hello world ${x}")),
):
cmdline(["--var", "x=5", "-"])
eq_(stdout.write.mock_calls[0][1][0], "hello world 5")
def test_stdin_syntax_err(self):
with mock.patch(
"sys.stdin", mock.Mock(read=mock.Mock(return_value="${x"))
):
with self._capture_output_fixture("stderr") as stderr:
with raises(SystemExit):
cmdline(["--var", "x=5", "-"])
assert (
"SyntaxException: Expected" in stderr.write.mock_calls[0][1][0]
)
assert "Traceback" in stderr.write.mock_calls[0][1][0]
def test_stdin_rt_err(self):
with mock.patch(
"sys.stdin", mock.Mock(read=mock.Mock(return_value="${q}"))
):
with self._capture_output_fixture("stderr") as stderr:
with raises(SystemExit):
cmdline(["--var", "x=5", "-"])
assert "NameError: Undefined" in stderr.write.mock_calls[0][1][0]
assert "Traceback" in stderr.write.mock_calls[0][1][0]
def test_file_success(self):
with self._capture_output_fixture() as stdout:
cmdline(
["--var", "x=5", os.path.join(template_base, "cmd_good.mako")]
)
eq_(stdout.write.mock_calls[0][1][0], "hello world 5")
def test_file_syntax_err(self):
with self._capture_output_fixture("stderr") as stderr:
with raises(SystemExit):
cmdline(
[
"--var",
"x=5",
os.path.join(template_base, "cmd_syntax.mako"),
]
)
assert "SyntaxException: Expected" in stderr.write.mock_calls[0][1][0]
assert "Traceback" in stderr.write.mock_calls[0][1][0]
def test_file_rt_err(self):
with self._capture_output_fixture("stderr") as stderr:
with raises(SystemExit):
cmdline(
[
"--var",
"x=5",
os.path.join(template_base, "cmd_runtime.mako"),
]
)
assert "NameError: Undefined" in stderr.write.mock_calls[0][1][0]
assert "Traceback" in stderr.write.mock_calls[0][1][0]
def test_file_notfound(self):
with raises(SystemExit, "error: can't find fake.lalala"):
cmdline(["--var", "x=5", "fake.lalala"])
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