"""Tests for the flake8.style_guide.Violation class."""
import mock
import pytest

from flake8 import style_guide


@pytest.mark.parametrize('error_code,physical_line,expected_result', [
    ('E111', 'a = 1', False),
    ('E121', 'a = 1  # noqa: E111', False),
    ('E121', 'a = 1  # noqa: E111,W123,F821', False),
    ('E111', 'a = 1  # noqa: E111,W123,F821', True),
    ('W123', 'a = 1  # noqa: E111,W123,F821', True),
    ('W123', 'a = 1  # noqa: E111, W123,F821', True),
    ('E111', 'a = 1  # noqa: E11,W123,F821', True),
    ('E111', 'a = 1  # noqa, analysis:ignore', True),
    ('E111', 'a = 1  # noqa analysis:ignore', True),
    ('E111', 'a = 1  # noqa - We do not care', True),
    ('E111', 'a = 1  # noqa: We do not care', True),
])
def test_is_inline_ignored(error_code, physical_line, expected_result):
    """Verify that we detect inline usage of ``# noqa``."""
    error = style_guide.Violation(
        error_code, 'filename.py', 1, 1, 'error text', None)
    # We want `None` to be passed as the physical line so we actually use our
    # monkey-patched linecache.getline value.

    with mock.patch('linecache.getline', return_value=physical_line):
        assert error.is_inline_ignored(False) is expected_result


def test_disable_is_inline_ignored():
    """Verify that is_inline_ignored exits immediately if disabling NoQA."""
    error = style_guide.Violation(
        'E121', 'filename.py', 1, 1, 'error text', 'line')

    with mock.patch('linecache.getline') as getline:
        assert error.is_inline_ignored(True) is False

    assert getline.called is False


@pytest.mark.parametrize('violation_file,violation_line,diff,expected', [
    ('file.py', 10, {}, True),
    ('file.py', 1, {'file.py': range(1, 2)}, True),
    ('file.py', 10, {'file.py': range(1, 2)}, False),
    ('file.py', 1, {'other.py': range(1, 2)}, False),
    ('file.py', 10, {'other.py': range(1, 2)}, False),
])
def test_violation_is_in_diff(violation_file, violation_line, diff, expected):
    """Verify that we find violations within a diff."""
    violation = style_guide.Violation(
        'E001', violation_file, violation_line, 1, 'warning', 'line',
    )

    assert violation.is_in(diff) is expected