"""Unit tests for features.py."""

import pytest

from features.models import feature_variant


def test_create():
    """Test the creation of a feature variant."""
    variant = feature_variant.FeatureVariant('catchy')
    assert variant.name == 'catchy'
    assert variant.active is False


def test_create_fails_no_variant_name():
    """Test the creation of feature variant throws exception."""
    with pytest.raises(Exception) as excinfo:
        feature_variant.FeatureVariant('', (0, 10))
    assert 'Name is mandatory' in str(excinfo.value)


def test_is_active_default():
    """Check if a feature variant is active defaults to false."""
    variant = feature_variant.FeatureVariant('catchy')
    assert variant.is_active() is False


def test_is_active_overridden():
    """Test if variant is_active uses constructor parameter."""
    variant = feature_variant.FeatureVariant('catchy', active=True)
    assert variant.is_active() is True


def test_to_dict():
    """Test to_dict has all fields and values."""
    variant = feature_variant.FeatureVariant('catchy', active=True)
    result = variant.to_dict()
    assert result == {'name': 'catchy', 'active': True}