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

from marshmallow import ValidationError
import pytest

from payment.constants.constants import (
    DEFAULT_PAGE_LIMIT,
    DEFAULT_PAGE_OFFSET,
    DEFAULT_SORT_BY,
    DEFAULT_SORT_ORDER,
)
from payment.utils.request import validate_pagination_params


def test_validate_pagination_params_valid():
    """Test no error is raised when params are valid."""
    params = {
        'limit': '25',
        'offset': '1',
        'sort_by': 'whatever',
        'sort_order': 'asc',
        'valid_sortable_columns': ['whatever'],
    }
    res = validate_pagination_params(**params)
    assert res == {
        'limit': int(params.get('limit')),
        'offset': int(params.get('offset')),
        'sort_by': params.get('sort_by'),
        'sort_order': params.get('sort_order'),
    }


def test_validate_pagination_params_valid_default():
    """Test default pagination params are valid."""
    res = validate_pagination_params()
    assert res == {
        'limit': DEFAULT_PAGE_LIMIT,
        'offset': DEFAULT_PAGE_OFFSET,
        'sort_by': DEFAULT_SORT_BY,
        'sort_order': DEFAULT_SORT_ORDER,
    }


def test_validate_pagination_params_invalid_limit():
    """Test error is raised when limit is not an int."""
    params = {'limit': 'does not exist'}
    with pytest.raises(ValidationError):
        validate_pagination_params(**params)


def test_validate_pagination_params_invalid_offset():
    """Test error is raised when offset is not an int."""
    params = {'offset': 'onset'}
    with pytest.raises(ValidationError):
        validate_pagination_params(**params)


def test_validate_pagination_params_invalid_sort_by():
    """Test error is raised when sort_by is not a valid column."""
    params = {'sort_by': 'nothing'}
    with pytest.raises(ValidationError):
        validate_pagination_params(**params)


def test_validate_pagination_params_invalid_sort_order():
    """Test error is raised when sort_order is not 'asc' or 'desc'."""
    params = {'sort_order': ''}
    with pytest.raises(ValidationError):
        validate_pagination_params(**params)