import pytest
from cmdparse.patterns import detect_pattern_type, PATTERNS


def test_detect_table_with_pipes():
    """Test detection of table format with pipe separators."""
    text = "| Name | Age |\n| Alice | 30 |"
    assert detect_pattern_type(text) == 'table'


def test_detect_key_value_colon():
    """Test detection of key-value with colon."""
    text = "key1: value1\nkey2: value2"
    assert detect_pattern_type(text) == 'key_value_colon'


def test_detect_delimited_tab():
    """Test detection of tab-delimited format."""
    text = "name\tage\tcity\nalice\t30\tnyc"
    assert detect_pattern_type(text) == 'delimited_tab'


def test_detect_empty():
    """Test detection of empty input."""
    assert detect_pattern_type("") == 'empty'


def test_detect_raw():
    """Test detection of raw/unstructured text."""
    text = "some random text without pattern"
    assert detect_pattern_type(text) == 'raw'


def test_patterns_not_empty():
    """Test that PATTERNS list is not empty."""
    assert len(PATTERNS) > 0