mirror of
https://github.com/PyCQA/flake8.git
synced 2026-04-04 20:26:53 +00:00
71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
"""Unit tests for the FileChecker class."""
|
|
from unittest import mock
|
|
|
|
import pytest
|
|
|
|
import flake8
|
|
from flake8 import checker
|
|
|
|
|
|
@mock.patch("flake8.processor.FileProcessor")
|
|
def test_run_ast_checks_handles_SyntaxErrors(FileProcessor): # noqa: N802,N803
|
|
"""Stress our SyntaxError handling.
|
|
|
|
Related to: https://github.com/pycqa/flake8/issues/169
|
|
"""
|
|
processor = mock.Mock(lines=[])
|
|
FileProcessor.return_value = processor
|
|
processor.build_ast.side_effect = SyntaxError(
|
|
"Failed to build ast", ("", 1, 5, "foo(\n")
|
|
)
|
|
file_checker = checker.FileChecker(__file__, checks={}, options=object())
|
|
|
|
with mock.patch.object(file_checker, "report") as report:
|
|
file_checker.run_ast_checks()
|
|
|
|
report.assert_called_once_with(
|
|
"E999",
|
|
1,
|
|
3,
|
|
"SyntaxError: Failed to build ast",
|
|
)
|
|
|
|
|
|
@mock.patch("flake8.checker.FileChecker._make_processor", return_value=None)
|
|
def test_repr(*args):
|
|
"""Verify we generate a correct repr."""
|
|
file_checker = checker.FileChecker(
|
|
"example.py",
|
|
checks={},
|
|
options=object(),
|
|
)
|
|
assert repr(file_checker) == "FileChecker for example.py"
|
|
|
|
|
|
def test_nonexistent_file():
|
|
"""Verify that checking non-existent file results in an error."""
|
|
c = checker.FileChecker("foobar.py", checks={}, options=object())
|
|
|
|
assert c.processor is None
|
|
assert not c.should_process
|
|
assert len(c.results) == 1
|
|
error = c.results[0]
|
|
assert error[0] == "E902"
|
|
|
|
|
|
def test_raises_exception_on_failed_plugin(tmp_path, default_options):
|
|
"""Checks that a failing plugin results in PluginExecutionFailed."""
|
|
foobar = tmp_path / "foobar.py"
|
|
foobar.write_text("I exist!") # Create temp file
|
|
plugin = {
|
|
"name": "failure",
|
|
"plugin_name": "failure", # Both are necessary
|
|
"parameters": dict(),
|
|
"plugin": mock.MagicMock(side_effect=ValueError),
|
|
}
|
|
"""Verify a failing plugin results in an plugin error"""
|
|
fchecker = checker.FileChecker(
|
|
str(foobar), checks=[], options=default_options
|
|
)
|
|
with pytest.raises(flake8.exceptions.PluginExecutionFailed):
|
|
fchecker.run_check(plugin)
|