diff --git a/.tests/unit/test_parsers.py b/.tests/unit/test_parsers.py
new file mode 100644
index 0000000..f95c869
--- /dev/null
+++ b/.tests/unit/test_parsers.py
@@ -0,0 +1,300 @@
+"""Unit tests for parsers."""
+
+import pytest
+import os
+from code_doc_cli.parsers.python_parser import PythonParser
+from code_doc_cli.parsers.typescript_parser import TypeScriptParser
+from code_doc_cli.parsers.go_parser import GoParser
+from code_doc_cli.parsers.registry import ParserRegistry
+from code_doc_cli.parsers.base import ElementType
+import tempfile
+
+
+class TestPythonParser:
+    """Tests for Python parser."""
+
+    def test_parse_function(self):
+        """Test parsing a Python function."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".py", delete=False) as f:
+            f.write('''
+def add(a: int, b: int) -> int:
+    """Add two numbers together.
+
+    Args:
+        a: First number
+        b: Second number
+
+    Returns:
+        The sum of a and b
+    """
+    return a + b
+''')
+            f.flush()
+            
+            parser = PythonParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        assert len(elements) > 0
+
+        func_names = [e.name for e in elements]
+        assert "add" in func_names
+
+        add_elem = next(e for e in elements if e.name == "add")
+        assert add_elem.element_type == ElementType.FUNCTION
+        assert len(add_elem.parameters) == 2
+
+    def test_parse_class(self):
+        """Test parsing a Python class."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".py", delete=False) as f:
+            f.write('''
+class Calculator:
+    """A simple calculator class."""
+
+    def __init__(self, initial: int = 0):
+        """Initialize calculator."""
+        self.memory = initial
+
+    def multiply(self, x: int, y: int) -> int:
+        """Multiply two numbers."""
+        return x * y
+''')
+            f.flush()
+            
+            parser = PythonParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        class_names = [e.name for e in elements]
+        assert "Calculator" in class_names
+
+        calc_elem = next(e for e in elements if e.name == "Calculator")
+        assert calc_elem.element_type == ElementType.CLASS
+
+    def test_parse_module(self):
+        """Test parsing module docstring."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".py", delete=False) as f:
+            f.write('''"""This is a test module."""
+
+def test_func():
+    pass
+''')
+            f.flush()
+            
+            parser = PythonParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        module_elems = [e for e in elements if e.element_type == ElementType.MODULE]
+        assert len(module_elems) == 1
+        assert "test module" in module_elems[0].description.lower()
+
+    def test_language_name(self):
+        """Test language name detection."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".py", delete=False) as f:
+            f.write("x = 1\n")
+            f.flush()
+            
+            parser = PythonParser(f.name)
+            os.unlink(f.name)
+            
+        assert parser.get_language_name() == "python"
+
+    def test_supports_file(self):
+        """Test file extension support."""
+        assert PythonParser.supports_file("test.py")
+        assert PythonParser.supports_file("test.pyw")
+        assert not PythonParser.supports_file("test.ts")
+        assert not PythonParser.supports_file("test.go")
+
+
+class TestTypeScriptParser:
+    """Tests for TypeScript parser."""
+
+    def test_parse_function(self):
+        """Test parsing a TypeScript function."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".ts", delete=False) as f:
+            f.write('''
+export function add(a: number, b: number): number {
+    return a + b;
+}
+''')
+            f.flush()
+            
+            parser = TypeScriptParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        func_names = [e.name for e in elements if e.element_type == ElementType.FUNCTION]
+        assert "add" in func_names
+
+    def test_parse_interface(self):
+        """Test parsing a TypeScript interface."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".ts", delete=False) as f:
+            f.write('''
+export interface User {
+    id: number;
+    name: string;
+}
+''')
+            f.flush()
+            
+            parser = TypeScriptParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        interface_names = [e.name for e in elements if e.element_type == ElementType.INTERFACE]
+        assert "User" in interface_names
+
+    def test_parse_class(self):
+        """Test parsing a TypeScript class."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".ts", delete=False) as f:
+            f.write('''
+export class Calculator {
+    private memory: number;
+    
+    constructor(initial: number = 0) {
+        this.memory = initial;
+    }
+    
+    public multiply(x: number, y: number): number {
+        return x * y;
+    }
+}
+''')
+            f.flush()
+            
+            parser = TypeScriptParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        class_names = [e.name for e in elements if e.element_type == ElementType.CLASS]
+        assert "Calculator" in class_names
+
+    def test_language_name(self):
+        """Test language name detection."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".ts", delete=False) as f:
+            f.write("const x = 1;\n")
+            f.flush()
+            
+            parser = TypeScriptParser(f.name)
+            os.unlink(f.name)
+            
+        assert parser.get_language_name() == "typescript"
+
+    def test_supports_file(self):
+        """Test file extension support."""
+        assert TypeScriptParser.supports_file("test.ts")
+        assert TypeScriptParser.supports_file("test.tsx")
+        assert not TypeScriptParser.supports_file("test.py")
+
+
+class TestGoParser:
+    """Tests for Go parser."""
+
+    def test_parse_function(self):
+        """Test parsing a Go function."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".go", delete=False) as f:
+            f.write('''
+package main
+
+func Add(a, b int) int {
+    return a + b
+}
+''')
+            f.flush()
+            
+            parser = GoParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        func_names = [e.name for e in elements if e.element_type == ElementType.FUNCTION]
+        assert "Add" in func_names
+
+    def test_parse_struct(self):
+        """Test parsing a Go struct."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".go", delete=False) as f:
+            f.write('''
+package main
+
+type Calculator struct {
+    memory int
+}
+''')
+            f.flush()
+            
+            parser = GoParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        struct_names = [e.name for e in elements if e.element_type == ElementType.STRUCT]
+        assert "Calculator" in struct_names
+
+    def test_parse_package(self):
+        """Test parsing package docstring."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".go", delete=False) as f:
+            f.write('''// Package main provides math functions.
+package main
+
+func Add(a, b int) int {
+    return a + b
+}
+''')
+            f.flush()
+            
+            parser = GoParser(f.name)
+            elements = parser.parse()
+            
+            os.unlink(f.name)
+
+        module_elems = [e for e in elements if e.element_type == ElementType.MODULE]
+        assert len(module_elems) >= 1
+
+    def test_language_name(self):
+        """Test language name detection."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".go", delete=False) as f:
+            f.write("package main\n")
+            f.flush()
+            
+            parser = GoParser(f.name)
+            os.unlink(f.name)
+            
+        assert parser.get_language_name() == "go"
+
+    def test_supports_file(self):
+        """Test file extension support."""
+        assert GoParser.supports_file("test.go")
+        assert not GoParser.supports_file("test.py")
+
+
+class TestParserRegistry:
+    """Tests for parser registry."""
+
+    def test_get_parser_class(self):
+        """Test getting parser class by language."""
+        assert ParserRegistry.get_parser_class("python") == PythonParser
+        assert ParserRegistry.get_parser_class("py") == PythonParser
+        assert ParserRegistry.get_parser_class("typescript") == TypeScriptParser
+        assert ParserRegistry.get_parser_class("ts") == TypeScriptParser
+        assert ParserRegistry.get_parser_class("go") == GoParser
+
+    def test_get_language_from_extension(self):
+        """Test language detection from extension."""
+        assert ParserRegistry.get_language_from_extension("test.py") == "python"
+        assert ParserRegistry.get_language_from_extension("test.ts") == "typescript"
+        assert ParserRegistry.get_language_from_extension("test.go") == "go"
+
+    def test_get_supported_languages(self):
+        """Test getting supported languages."""
+        languages = ParserRegistry.get_supported_languages()
+        assert "python" in languages
+        assert "typescript" in languages
+        assert "go" in languages