"""Tests for the basic utils library."""

from unittest.mock import MagicMock

from users import constants
from users.utils import basic_utils


def test_sign_token():
    """Test sign_token."""
    unassigned_token = bytes(
        'timestamp={0}&label_id={1}&user_id={2}'.format('1530106655', '123', 'alw:123').encode(
            'utf-8'
        )
    )
    shared_secret = bytes('I-am-a-shared-secret'.encode('utf-8'))
    expected_result = bytes(
        'MTlmZGUzYjRmNTM0NzEwZjgxZjlkOGQ4N2I5OWU1N2EyYTkwOGZkOA=='.encode('utf-8')
    )

    result = basic_utils.sign_token(unassigned_token, shared_secret)

    assert result == expected_result


def test_get_pagination(monkeypatch):
    """Test pagination is returned as namedtuple."""
    expected_offset = 10
    expected_limit = 100

    mockRequest = MagicMock()
    mockRequest.args.get.side_effect = [expected_offset, expected_limit]
    result = basic_utils.get_pagination(mockRequest)
    assert result.offset == expected_offset
    assert result.limit == expected_limit


def test_get_pagination_uses_defaults(monkeypatch):
    """Test pagination is returned as named tuple for default values."""
    mockRequest = MagicMock()
    mockRequest.args.get.side_effect = [None, None]
    result = basic_utils.get_pagination(mockRequest)
    assert result.offset == constants.PAGE_OFFSET_DEFAULT
    assert result.limit == constants.PAGE_LIMIT_DEFAULT


def test_get_pagination_handles_non_ints(monkeypatch):
    """Test pagination handles non ints."""
    mockRequest = MagicMock()
    mockRequest.args.get.side_effect = ['not', 'number']
    result = basic_utils.get_pagination(mockRequest)
    assert result.offset == constants.PAGE_OFFSET_DEFAULT
    assert result.limit == constants.PAGE_LIMIT_DEFAULT