diff --git a/.tests/test_parser.py b/.tests/test_parser.py
new file mode 100644
index 0000000..3162337
--- /dev/null
+++ b/.tests/test_parser.py
@@ -0,0 +1,113 @@
+import pytest
+from curl_to_code.parser import parse_curl_command, curl_tokenize
+from curl_to_code.parser.models import RequestMethod, AuthType, DataType
+
+
+class TestCurlTokenizer:
+    def test_simple_curl(self):
+        tokens = curl_tokenize("curl https://example.com")
+        assert "curl" in tokens
+        assert "https://example.com" in tokens
+    
+    def test_curl_with_headers(self):
+        tokens = curl_tokenize('curl -H "Accept: application/json" https://example.com')
+        assert len(tokens) >= 4
+    
+    def test_curl_with_quoted_values(self):
+        tokens = curl_tokenize('curl -H "Content-Type: application/json" https://example.com')
+        assert any('"Content-Type: application/json"' in t or 'Content-Type: application/json' in t for t in tokens)
+
+
+class TestCurlParser:
+    def test_parse_simple_get(self):
+        result = parse_curl_command("curl https://api.example.com/users")
+        assert result.url == "https://api.example.com/users"
+        assert result.method == RequestMethod.GET
+    
+    def test_parse_post_method(self):
+        result = parse_curl_command("curl -X POST https://api.example.com/users")
+        assert result.method == RequestMethod.POST
+    
+    def test_parse_put_method(self):
+        result = parse_curl_command("curl --request PUT https://api.example.com/users/1")
+        assert result.method == RequestMethod.PUT
+    
+    def test_parse_delete_method(self):
+        result = parse_curl_command("curl -X DELETE https://api.example.com/users/1")
+        assert result.method == RequestMethod.DELETE
+    
+    def test_parse_header(self):
+        result = parse_curl_command('curl -H "Accept: application/json" https://api.example.com')
+        assert len(result.headers) >= 1
+        header = result.headers[0]
+        assert header.key == "Accept"
+        assert header.value == "application/json"
+    
+    def test_parse_multiple_headers(self):
+        result = parse_curl_command(
+            'curl -H "Accept: application/json" -H "X-Custom-Header: value" https://api.example.com'
+        )
+        assert len(result.headers) >= 2
+    
+    def test_parse_basic_auth(self):
+        result = parse_curl_command("curl -u user:pass https://api.example.com")
+        assert result.auth is not None
+        assert result.auth.username == "user"
+        assert result.auth.password == "pass"
+    
+    def test_parse_post_data(self):
+        result = parse_curl_command("curl -d 'name=test' https://api.example.com")
+        assert result.data is not None
+        assert result.data.content == "name=test"
+    
+    def test_parse_json_data(self):
+        result = parse_curl_command("curl -d '{\"name\":\"test\"}' https://api.example.com")
+        assert result.data is not None
+        assert result.data.data_type == DataType.JSON
+        assert result.data.json_data == {"name": "test"}
+    
+    def test_parse_url_flag(self):
+        result = parse_curl_command("curl --url https://api.example.com")
+        assert result.url == "https://api.example.com"
+    
+    def test_parse_user_agent(self):
+        result = parse_curl_command("curl -A 'Mozilla/5.0' https://api.example.com")
+        assert result.user_agent == "Mozilla/5.0"
+    
+    def test_parse_cookie(self):
+        result = parse_curl_command("curl -b 'session=abc123' https://api.example.com")
+        assert "session" in result.cookies
+        assert result.cookies["session"] == "abc123"
+    
+    def test_parse_timeout(self):
+        result = parse_curl_command("curl --connect-timeout 30 https://api.example.com")
+        assert result.timeout == 30
+    
+    def test_parse_follow_redirects(self):
+        result = parse_curl_command("curl -L https://api.example.com")
+        assert result.follow_redirects is True
+    
+    def test_complex_curl_command(self):
+        cmd = '''curl -X POST -H "Content-Type: application/json" -H "Authorization: Bearer token123" -d '{"name":"John","age":30}' https://api.example.com/users'''
+        result = parse_curl_command(cmd)
+        assert result.method == RequestMethod.POST
+        assert result.url == "https://api.example.com/users"
+        assert len(result.headers) >= 1
+        assert result.data is not None
+        assert result.data.data_type == DataType.JSON
+    
+    def test_curl_with_data_raw(self):
+        result = parse_curl_command("curl --data-raw 'name=test' https://api.example.com")
+        assert result.data is not None
+        assert result.data.content == "name=test"
+    
+    def test_curl_with_data_binary(self):
+        result = parse_curl_command("curl --data-binary '@file.txt' https://api.example.com")
+        assert result.data is not None
+    
+    def test_bearer_token_auth(self):
+        result = parse_curl_command("-H \"Authorization: Bearer mytoken123\" https://api.example.com")
+        assert result.auth is None
+        auth_header = next((h for h in result.headers if h.key == "Authorization"), None)
+        assert auth_header is not None
+        assert "Bearer" in auth_header.value