import pytest
from errorfix.rules import Rule


class TestRule:
    def test_rule_creation(self):
        rule = Rule(
            id='test-rule',
            name='Test Rule',
            pattern='TestError: .*',
            fix='Fix it',
            description='A test rule',
        )
        assert rule.id == 'test-rule'
        assert rule.name == 'Test Rule'
        assert rule.pattern == 'TestError: .*'
        assert rule.fix == 'Fix it'
        assert rule.description == 'A test rule'
        assert rule.severity.value == 'error'

    def test_rule_from_dict(self):
        data = {
            'id': 'test-rule',
            'name': 'Test Rule',
            'pattern': 'TestError: .*',
            'fix': 'Fix it',
            'description': 'A test rule',
            'severity': 'warning',
            'language': 'python',
            'tags': ['test', 'example'],
            'priority': 10,
        }
        rule = Rule.from_dict(data)
        assert rule.id == 'test-rule'
        assert rule.severity.value == 'warning'
        assert rule.language == 'python'
        assert rule.tags == ['test', 'example']
        assert rule.priority == 10

    def test_rule_to_dict(self):
        rule = Rule(
            id='test-rule',
            name='Test Rule',
            pattern='TestError: .*',
            fix='Fix it',
            description='A test rule',
            severity='warning',
        )
        data = rule.to_dict()
        assert data['id'] == 'test-rule'
        assert data['severity'] == 'warning'

    def test_rule_with_all_fields(self):
        rule = Rule(
            id='full-rule',
            name=' 'Full Rule',
            pattern='FullError: (?P<msg>.*)',
            fix='Fix {msg}',
            description='A rule with all fields',
            severity='suggestion',
            language='javascript',
            tool='node',
            tags=['tag1', 'tag2'],
            priority=7,
            metadata={'extra': 'data'},
        )
        assert rule.tool == 'node'
        assert rule.metadata == {'extra': 'data'}