diff --git a/tests/unit/test_cli.py b/tests/unit/test_cli.py
new file mode 100644
index 0000000..80479af
--- /dev/null
+++ b/tests/unit/test_cli.py
@@ -0,0 +1,109 @@
+import pytest
+import tempfile
+import os
+from click.testing import CliRunner
+from unittest.mock import patch, MagicMock
+from pathlib import Path
+from src.cli.main import cli, analyze, visualize, complexity, deps, export
+from src.graph.builder import GraphBuilder, GraphType
+
+
+class TestCLI:
+    def setup_method(self):
+        self.runner = CliRunner()
+
+    def test_cli_help(self):
+        result = self.runner.invoke(cli, ["--help"])
+        assert result.exit_code == 0
+        assert "Usage:" in result.output
+
+    @patch("src.cli.main._parse_files")
+    @patch("src.cli.main._get_parser")
+    def test_analyze_command(self, mock_get_parser, mock_parse_files):
+        mock_parser = MagicMock()
+        mock_get_parser.return_value = mock_parser
+
+        mock_result = MagicMock()
+        mock_result.file_path = Path("/test.py")
+        mock_result.entities = []
+        mock_result.imports = []
+        mock_parse_files.return_value = [mock_result]
+
+        mock_graph_builder = MagicMock()
+        mock_graph_builder.get_nodes.return_value = []
+
+        with patch("src.cli.main.GraphBuilder") as MockGraphBuilder:
+            MockGraphBuilder.return_value = mock_graph_builder
+
+            with tempfile.TemporaryDirectory() as tmpdir:
+                result = self.runner.invoke(cli, ["analyze", tmpdir])
+
+        assert result.exit_code == 0
+
+    @patch("src.cli.main._parse_files")
+    @patch("src.cli.main._get_parser")
+    def test_visualize_command(self, mock_get_parser, mock_parse_files):
+        mock_parser = MagicMock()
+        mock_get_parser.return_value = mock_parser
+
+        mock_result = MagicMock()
+        mock_result.file_path = Path("/test.py")
+        mock_result.entities = []
+        mock_result.imports = []
+        mock_parse_files.return_value = [mock_result]
+
+        mock_graph_builder = MagicMock()
+        mock_graph_builder.get_nodes.return_value = []
+
+        with patch("src.cli.main.GraphBuilder") as MockGraphBuilder:
+            MockGraphBuilder.return_value = mock_graph_builder
+
+            with tempfile.TemporaryDirectory() as tmpdir:
+                result = self.runner.invoke(visualize, [tmpdir])
+
+        assert result.exit_code == 0
+
+    @patch("src.cli.main._parse_files")
+    @patch("src.cli.main._get_parser")
+    def test_complexity_command(self, mock_get_parser, mock_parse_files):
+        mock_parser = MagicMock()
+        mock_get_parser.return_value = mock_parser
+
+        mock_result = MagicMock()
+        mock_result.file_path = Path("/test.py")
+        mock_result.entities = []
+        mock_result.imports = []
+        mock_parse_files.return_value = [mock_result]
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            result = self.runner.invoke(complexity, [tmpdir])
+
+        assert result.exit_code == 0
+
+    @patch("src.cli.main._parse_files")
+    @patch("src.cli.main._get_parser")
+    def test_deps_command(self, mock_get_parser, mock_parse_files):
+        mock_parser = MagicMock()
+        mock_get_parser.return_value = mock_parser
+
+        mock_result = MagicMock()
+        mock_result.file_path = Path("/test.py")
+        mock_result.entities = []
+        mock_result.imports = []
+        mock_parse_files.return_value = [mock_result]
+
+        mock_graph_builder = MagicMock()
+        mock_graph_builder.get_nodes.return_value = []
+        mock_graph_builder.edges = []
+
+        with patch("src.cli.main.GraphBuilder") as MockGraphBuilder:
+            MockGraphBuilder.return_value = mock_graph_builder
+
+            with tempfile.TemporaryDirectory() as tmpdir:
+                result = self.runner.invoke(deps, [tmpdir])
+
+        assert result.exit_code == 0
+
+    def test_verbose_flag(self):
+        result = self.runner.invoke(cli, ["--verbose", "--help"])
+        assert result.exit_code == 0