"""Unit tests for dates validation."""
import pytest

from analytics.consts import error
from analytics.validation import date_validation


@pytest.mark.parametrize(
    'correct_dates',
    [('2017-02-01', '2017-02-28'),
     ('2017-03-01', '2017-05-29')]
)
def test_validate_correct_dates(correct_dates):
    """Test date range validation with correct dates."""
    from_date, to_date = correct_dates
    days_threshold = 90

    result = date_validation.validate_date_range(
        from_date, to_date, days_threshold)

    assert result


@pytest.mark.parametrize(
    'incorrect_dates',
    [('2017-02-28', '2017-02-01'),
     ('2017-05-29', '2017-03-01'),
     ('2017-05-29', '2017-05-29'),
     ('2017-01-01', '2018-01-01')]
)
def test_validate_incorrect_dates(incorrect_dates):
    """Test date range validation with incorrect dates."""
    from_date, to_date = incorrect_dates
    days_threshold = 90

    result = date_validation.validate_date_range(
        from_date, to_date, days_threshold)

    assert not result
    assert result.status == 400
    assert result.errors['message'] == error.INVALID_DATE_RANGE_VALUES_MESSAGE


@pytest.mark.parametrize(
    'ill_formatted_dates',
    [('2017-03-32', '2017-04-01'),
     ('31.03.2017', 'AAAAAAA')]
)
def test_validate_ill_formatted_dates(ill_formatted_dates):
    """Test date range validation with ill formatted dates."""
    from_date, to_date = ill_formatted_dates
    days_threshold = 90

    result = date_validation.validate_date_range(
        from_date, to_date, days_threshold)

    assert not result
    assert result.status == 400
    assert result.errors['message'] == error.INVALID_DATE_RANGE_FORMAT_MESSAGE


@pytest.mark.parametrize(
    'bad_threshold',
    [-5, 0]
)
def test_validate_correct_dates_with_bad_threshold(bad_threshold):
    """Test date range validation with correct dates."""
    from_date, to_date = ('2017-02-01', '2017-02-28')

    result = date_validation.validate_date_range(
        from_date, to_date, bad_threshold)

    assert not result
    assert result.status == 400
    assert result.errors['message'] == error.INVALID_DAYS_THRESHOLD_MESSAGE