fix: resolve CI linting and type checking issues

app/tests/test_cli.py

@@ -0,0 +1,42 @@
+import pytest
+from click.testing import CliRunner
+from cmdparse.cli import main
+
+
+def test_cli_basic():
+    """Test basic CLI functionality."""
+    runner = CliRunner()
+    result = runner.invoke(main, ['-q'], input='test input')
+    assert result.exit_code == 0
+
+
+def test_cli_output_format():
+    """Test different output formats."""
+    runner = CliRunner()
+    for fmt in ['json', 'yaml', 'csv', 'raw']:
+        result = runner.invoke(main, ['-o', fmt, '-q'], input='test input')
+        assert result.exit_code == 0
+
+
+def test_cli_extract_fields():
+    """Test field extraction."""
+    runner = CliRunner()
+    input_text = 'key1: value1\nkey2: value2'
+    result = runner.invoke(main, ['-e', 'key1', '-q'], input=input_text)
+    assert result.exit_code == 0
+
+
+def test_cli_empty_input():
+    """Test handling of empty input."""
+    runner = CliRunner()
+    result = runner.invoke(main, ['-q'], input='')
+    assert result.exit_code == 1
+    assert 'No input' in result.output
+
+
+def test_cli_quiet_flag():
+    """Test quiet flag suppresses pattern detection."""
+    runner = CliRunner()
+    result_quiet = runner.invoke(main, ['-q'], input='test')
+    result_normal = runner.invoke(main, [], input='test')
+    assert result_quiet.exit_code == 0