diff --git a/tests/unit/test_parsers.py b/tests/unit/test_parsers.py
new file mode 100644
index 0000000..1888b87
--- /dev/null
+++ b/tests/unit/test_parsers.py
@@ -0,0 +1,208 @@
+import pytest
+from pathlib import Path
+from src.parsers.base import BaseParser, Entity, EntityType, ParserResult
+from src.parsers.python import PythonParser
+from src.parsers.javascript import JavaScriptParser
+from src.parsers.go import GoParser
+from src.parsers.rust import RustParser
+
+
+class TestBaseParser:
+    def test_entity_creation(self):
+        entity = Entity(
+            name="test_func",
+            entity_type=EntityType.FUNCTION,
+            file_path=Path("/test/file.py"),
+            start_line=1,
+            end_line=10,
+            code="def test_func(): pass",
+        )
+        assert entity.name == "test_func"
+        assert entity.entity_type == EntityType.FUNCTION
+        assert entity.start_line == 1
+        assert entity.end_line == 10
+
+    def test_parser_result(self):
+        result = ParserResult(
+            file_path=Path("/test/file.py"),
+            language="python",
+        )
+        assert result.file_path == Path("/test/file.py")
+        assert result.language == "python"
+        assert result.entities == []
+        assert result.imports == []
+
+
+class TestPythonParser:
+    def setup_method(self):
+        self.parser = PythonParser()
+
+    def test_parse_simple_function(self):
+        code = """
+def hello():
+    print("Hello, World!")
+"""
+        result = self.parser.parse(Path("/test.py"), code)
+        assert result.language == "python"
+        assert len(result.entities) >= 1
+
+    def test_parse_class_with_methods(self):
+        code = """
+class MyClass:
+    def method1(self):
+        pass
+
+    def method2(self):
+        pass
+"""
+        result = self.parser.parse(Path("/test.py"), code)
+        assert result.language == "python"
+        class_entities = [e for e in result.entities if e.entity_type == EntityType.CLASS]
+        assert len(class_entities) == 1
+
+    def test_extract_imports(self):
+        code = """
+import os
+import sys
+from pathlib import Path
+"""
+        result = self.parser.parse(Path("/test.py"), code)
+        assert "os" in result.imports
+        assert "sys" in result.imports
+
+    def test_can_parse_py_file(self):
+        assert self.parser.can_parse(Path("/test.py"))
+        assert self.parser.can_parse(Path("/test.pyi"))
+        assert not self.parser.can_parse(Path("/test.js"))
+
+
+class TestJavaScriptParser:
+    def setup_method(self):
+        self.parser = JavaScriptParser()
+
+    def test_parse_function(self):
+        code = """
+function hello() {
+    console.log("Hello");
+}
+"""
+        result = self.parser.parse(Path("/test.js"), code)
+        assert result.language == "javascript"
+        assert len(result.entities) >= 1
+
+    def test_parse_arrow_function(self):
+        code = """
+const add = (a, b) => a + b;
+"""
+        result = self.parser.parse(Path("/test.js"), code)
+        assert result.language == "javascript"
+
+    def test_parse_class(self):
+        code = """
+class MyClass {
+    constructor() {}
+
+    method1() {}
+}
+"""
+        result = self.parser.parse(Path("/test.js"), code)
+        class_entities = [e for e in result.entities if e.entity_type == EntityType.CLASS]
+        assert len(class_entities) == 1
+
+    def test_can_parse_js_file(self):
+        assert self.parser.can_parse(Path("/test.js"))
+        assert self.parser.can_parse(Path("/test.jsx"))
+        assert not self.parser.can_parse(Path("/test.py"))
+
+
+class TestGoParser:
+    def setup_method(self):
+        self.parser = GoParser()
+
+    def test_parse_function(self):
+        code = """
+func hello() {
+    fmt.Println("Hello")
+}
+"""
+        result = self.parser.parse(Path("/test.go"), code)
+        assert result.language == "go"
+        assert len(result.entities) >= 1
+
+    def test_parse_struct(self):
+        code = """
+type Person struct {
+    Name string
+    Age  int
+}
+"""
+        result = self.parser.parse(Path("/test.go"), code)
+        assert result.language == "go"
+
+    def test_can_parse_go_file(self):
+        assert self.parser.can_parse(Path("/test.go"))
+        assert not self.parser.can_parse(Path("/test.py"))
+
+
+class TestRustParser:
+    def setup_method(self):
+        self.parser = RustParser()
+
+    def test_parse_function(self):
+        code = """
+fn hello() {
+    println!("Hello");
+}
+"""
+        result = self.parser.parse(Path("/test.rs"), code)
+        assert result.language == "rust"
+        assert len(result.entities) >= 1
+
+    def test_parse_struct(self):
+        code = """
+struct Person {
+    name: String,
+    age: u32,
+}
+"""
+        result = self.parser.parse(Path("/test.rs"), code)
+        assert result.language == "rust"
+
+    def test_parse_trait(self):
+        code = """
+trait Drawable {
+    fn draw(&self);
+}
+"""
+        result = self.parser.parse(Path("/test.rs"), code)
+        assert result.language == "rust"
+
+    def test_can_parse_rs_file(self):
+        assert self.parser.can_parse(Path("/test.rs"))
+        assert not self.parser.can_parse(Path("/test.py"))
+
+
+class TestParserFactory:
+    def test_get_parser_for_python_file(self):
+        parser = BaseParser.get_parser_for_file(Path("/test.py"))
+        assert parser is not None
+        assert isinstance(parser, PythonParser)
+
+    def test_get_parser_for_js_file(self):
+        parser = BaseParser.get_parser_for_file(Path("/test.js"))
+        assert parser is not None
+        assert isinstance(parser, JavaScriptParser)
+
+    def test_get_parser_for_go_file(self):
+        parser = BaseParser.get_parser_for_file(Path("/test.go"))
+        assert parser is not None
+        assert isinstance(parser, GoParser)
+
+    def test_get_parser_for_rs_file(self):
+        parser = BaseParser.get_parser_for_file(Path("/test.rs"))
+        assert parser is not None
+        assert isinstance(parser, RustParser)
+
+    def test_get_parser_returns_none_for_unknown(self):
+        parser = BaseParser.get_parser_for_file(Path("/test.xyz"))
+        assert parser is None