import unittest

from django_components import component

from .django_test_setup import *  # NOQA


class MockComponent(component.Component):
    pass


class MockComponent2(component.Component):
    pass


class MockComponentView(component.Component):
    def get(self, request, *args, **kwargs):
        pass


class ComponentRegistryTest(unittest.TestCase):
    def setUp(self):
        self.registry = component.ComponentRegistry()

    def test_register_class_decorator(self):
        @component.register("decorated_component")
        class TestComponent(component.Component):
            pass

        self.assertEqual(component.registry.get("decorated_component"), TestComponent)

    def test_simple_register(self):
        self.registry.register(name="testcomponent", component=MockComponent)
        self.assertEqual(self.registry.all(), {"testcomponent": MockComponent})

    def test_register_two_components(self):
        self.registry.register(name="testcomponent", component=MockComponent)
        self.registry.register(name="testcomponent2", component=MockComponent)
        self.assertEqual(
            self.registry.all(),
            {
                "testcomponent": MockComponent,
                "testcomponent2": MockComponent,
            },
        )

    def test_prevent_registering_different_components_with_the_same_name(self):
        self.registry.register(name="testcomponent", component=MockComponent)
        with self.assertRaises(component.AlreadyRegistered):
            self.registry.register(name="testcomponent", component=MockComponent2)

    def test_allow_duplicated_registration_of_the_same_component(self):
        try:
            self.registry.register(name="testcomponent", component=MockComponentView)
            self.registry.register(name="testcomponent", component=MockComponentView)
        except component.AlreadyRegistered:
            self.fail("Should not raise AlreadyRegistered")

    def test_simple_unregister(self):
        self.registry.register(name="testcomponent", component=MockComponent)
        self.registry.unregister(name="testcomponent")
        self.assertEqual(self.registry.all(), {})

    def test_raises_on_failed_unregister(self):
        with self.assertRaises(component.NotRegistered):
            self.registry.unregister(name="testcomponent")