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65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
"""Unit tests for the FileChecker class."""
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from unittest import mock
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import pytest
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import flake8
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from flake8 import checker
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@mock.patch('flake8.processor.FileProcessor')
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def test_run_ast_checks_handles_SyntaxErrors(FileProcessor): # noqa: N802,N803
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"""Stress our SyntaxError handling.
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Related to: https://gitlab.com/pycqa/flake8/issues/237
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"""
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processor = mock.Mock(lines=[])
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FileProcessor.return_value = processor
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processor.build_ast.side_effect = SyntaxError('Failed to build ast',
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('', 1, 5, 'foo(\n'))
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file_checker = checker.FileChecker(__file__, checks={}, options=object())
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with mock.patch.object(file_checker, 'report') as report:
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file_checker.run_ast_checks()
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report.assert_called_once_with(
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'E999', 1, 3,
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'SyntaxError: Failed to build ast',
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)
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@mock.patch('flake8.checker.FileChecker._make_processor', return_value=None)
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def test_repr(*args):
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"""Verify we generate a correct repr."""
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file_checker = checker.FileChecker(
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'example.py', checks={}, options=object(),
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)
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assert repr(file_checker) == 'FileChecker for example.py'
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def test_nonexistent_file():
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"""Verify that checking non-existent file results in an error."""
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c = checker.FileChecker("foobar.py", checks={}, options=object())
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assert c.processor is None
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assert not c.should_process
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assert len(c.results) == 1
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error = c.results[0]
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assert error[0] == "E902"
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def test_raises_exception_on_failed_plugin(tmp_path, default_options):
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"""Checks that a failing plugin results in PluginExecutionFailed."""
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foobar = tmp_path / 'foobar.py'
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foobar.write_text("I exist!") # Create temp file
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plugin = {
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"name": "failure",
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"plugin_name": "failure", # Both are necessary
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"parameters": dict(),
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"plugin": mock.MagicMock(side_effect=ValueError),
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}
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"""Verify a failing plugin results in an plugin error"""
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fchecker = checker.FileChecker(
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str(foobar), checks=[], options=default_options)
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with pytest.raises(flake8.exceptions.PluginExecutionFailed):
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fchecker.run_check(plugin)
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