from django.test import TestCase
from .models import Item, List

class HomePageTest(TestCase):
    def test_uses_home_template(self):
        response = self.client.get('/')
        self.assertTemplateUsed(response, 'apps/dashboard/home.html')

    def test_renders_input_form(self):
        response = self.client.get('/')
        self.assertContains(response, '<form method="POST" action="/apps/dashboard/newlist">')
        self.assertContains(response, '<input name="item_text"')

class ListAndItemModelsTest(TestCase):
    def test_saving_and_retrieving_items(self):
        mylist = List()
        mylist.save()

        first_item = Item()
        first_item.text = "The first (ever) list item"
        first_item.list = mylist
        first_item.save()

        second_item = Item()
        second_item.text = "A sequel somehow better than the first"
        second_item.list = mylist
        second_item.save()

        saved_list = List.objects.get()
        self.assertEqual(saved_list, mylist)

        saved_items = Item.objects.all()
        self.assertEqual(saved_items.count(), 2)

        first_saved_item = saved_items[0]
        second_saved_item = saved_items[1]
        self.assertEqual(first_saved_item.text, "The first (ever) list item")
        self.assertEqual(first_saved_item.list, mylist)
        self.assertEqual(second_saved_item.text, "A sequel somehow better than the first")
        self.assertEqual(second_saved_item.list, mylist)

class DashViewTest(TestCase):
    def test_uses_list_template(self):
        response = self.client.get('/apps/dashboard/the-only-list-in-the-world/')
        self.assertTemplateUsed(response, 'apps/dashboard/list.html')

    def test_renders_input_form(self):
        response = self.client.get('/apps/dashboard/the-only-list-in-the-world/')
        self.assertContains(response, '<form method="POST" action="/apps/dashboard/newlist">')
        self.assertContains(response, '<input name="item_text"')

    def test_displays_all_list_items(self):
        # Given/Arrange
        mylist = List.objects.create()
        Item.objects.create(text='itemey 1', list=mylist)
        Item.objects.create(text='itemey 2', list=mylist)
        # When/Act
        response = self.client.get('/apps/dashboard/the-only-list-in-the-world/')
        # Then/Assert
        self.assertContains(response, 'itemey 1')
        self.assertContains(response, 'itemey 2')

class NewListTest(TestCase):
    def test_can_save_a_POST_request(self):
        self. client.post('/apps/dashboard/newlist', data={'item_text': 'A new list item'})
        self.assertEqual(Item.objects.count(), 1)
        new_item = Item.objects.get()
        self.assertEqual(new_item.text, 'A new list item')

    def test_redirects_after_POST(self):
        response = self.client.post('/apps/dashboard/newlist', data={'item_text': 'A new list item'})
        self.assertRedirects(response, '/apps/dashboard/the-only-list-in-the-world/')