Initial upload: ErrorFix CLI with rule engine and pattern matching

tests/unit/test_patterns.py

@@ -0,0 +1,109 @@
+import pytest
+from errorfix.patterns import PatternMatcher, MatchResult
+from errorfix.rules import Rule
+
+
+class TestPatternMatcher:
+    def setup_method(self):
+        self.matcher = PatternMatcher()
+        self.rule = Rule(
+            id='test-rule',
+            name='Test Rule',
+            pattern=r"Error: (?P<message>.*)",
+            fix="Fix: {message}",
+            description="Test pattern",
+        )
+
+    def test_simple_match(self):
+        text = "Error: something went wrong"
+        result = self.matcher.match(text, self.rule)
+        assert result is not None
+        assert result.matched_text == "Error: something went wrong"
+        assert result.groups['message'] == "something went wrong"
+
+    def test_no_match(self):
+        text = "This is not an error"
+        result = self.matcher.match(text, self.rule)
+        assert result is None
+
+    def test_match_with_special_chars(self):
+        rule = Rule(
+            id='special-rule',
+            name='Special Rule',
+            pattern=r"ValueError: invalid value '(?P<value>[^']+)'",
+            fix="Correct value: {value}",
+            description="Special pattern",
+        )
+        text = "ValueError: invalid value 'test@example.com'"
+        result = self.matcher.match(text, rule)
+        assert result is not None
+        assert result.groups['value'] == 'test@example.com'
+
+    def test_match_all(self):
+        rules = [
+            Rule(
+                id='rule1',
+                name='Rule 1',
+                pattern=r"Error1: (?P<msg>.*)",
+                fix="Fix 1: {msg}",
+                description="Rule 1",
+                priority=10,
+            ),
+            Rule(
+                id='rule2',
+                name='Rule 2',
+                pattern=r"Error2: (?P<msg>.*)",
+                fix="Fix 2: {msg}",
+                description="Rule 2",
+                priority=5,
+            ),
+        ]
+        text = "Error1: test1\nError2: test2"
+        results = self.matcher.match_all(text, rules)
+        assert len(results) == 2
+
+    def test_match_with_priority(self):
+        rules = [
+            Rule(
+                id='low-priority',
+                name='Low Priority',
+                pattern=r"GenericError: (?P<msg>.*)",
+                fix="Fix: {msg}",
+                description="Generic",
+                priority=1,
+            ),
+            Rule(
+                id='high-priority',
+                name='High Priority',
+                pattern=r"GenericError: (?P<msg>.*)",
+                fix="Fix: {msg}",
+                description="Specific",
+                priority=10,
+            ),
+        ]
+        text = "GenericError: test"
+        result = self.matcher.find_best_match(text, rules)
+        assert result is not None
+        assert result.rule.id == 'high-priority'
+
+    def test_apply_fix_with_variables(self):
+        rule = Rule(
+            id='fix-rule',
+            name='Fix Rule',
+            pattern=r"NameError: name '(?P<name>[^']+)' is not defined",
+            fix="Define {name} before using it",
+            description="Name error',
+        )
+        text = "NameError: name 'foo' is not defined"
+        result = self.matcher.match(text, rule)
+        assert result is not None
+        fix = result.apply_fix()
+        assert "foo" in fix
+
+    def test_caching(self):
+        self.matcher._compile_pattern.cache_clear()
+        pattern = r"Test: (?P<val>.*)"
+        self.matcher._compile_pattern(pattern)
+        assert self.matcher._compile_pattern.cache_info().currsize == 1
+        self.matcher._compile_pattern(pattern)
+        assert self.matcher._compile_pattern.cache_info().currsize == 1