"""Unit tests for request util."""

import pytest

from abacus_contract.constants.error import ERROR_INVALID_LIMIT_OFFSET
from abacus_contract.utils.request import (
    escape_like_pattern,
    validate_pagination_params,
)


def test_validate_pagination_params_success():
    """Test validate_pagination_params when all parameters are valid."""
    params = {'limit': 1, 'offset': 0}
    expected_response = {'limit': 1, 'offset': 0}

    res = validate_pagination_params(**params)

    assert res == expected_response


def test_validate_pagination_params_error():
    """Test validate_pagination_params for an invalid params."""
    with pytest.raises(Exception, match=ERROR_INVALID_LIMIT_OFFSET):
        params = {'limit': 'test', 'offset': 0}
        validate_pagination_params(**params)


@pytest.mark.parametrize(
    ('raw', 'expected'),
    [
        ('foo', 'foo'),
        ('', ''),
        ('100%', r'100\%'),
        ('foo_bar', r'foo\_bar'),
        ('back\\slash', r'back\\slash'),
        ('%_\\', r'\%\_\\'),
        ('mix 50% on_track', r'mix 50\% on\_track'),
        # Wildcards from other systems (e.g. `*`, `?`) are NOT SQL LIKE
        # wildcards and must pass through unchanged.
        ('*?', '*?'),
    ],
)
def test_escape_like_pattern_escapes_only_sql_wildcards(raw, expected):
    """Backslash, percent, and underscore are escaped; everything else passes through."""
    assert escape_like_pattern(raw) == expected


def test_escape_like_pattern_coerces_non_string_input():
    """Non-string input (e.g. an int from a caller) is stringified before escaping."""
    assert escape_like_pattern(42) == '42'