Feature/create unit tests

blog/tests/__init__.py

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+"""Test collection for blog app."""

blog/tests/models_test.py

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+"""Tests for models."""
+
+from datetime import datetime
+from unittest.mock import patch
+
+from django.contrib.auth.models import User
+from django.test import TestCase
+from django.utils import timezone
+
+from ..models import Post
+
+
+class PostModelTest(TestCase):
+    """Tests for post model."""
+
+    def setUp(self):
+        """Set up non-modifiable objects used by all test methods."""
+        self.post = Post.objects.create(
+            author=User.objects.create(username="bob"),
+            title="Title",
+            text="A few lines of text",
+        )
+
+    def tearDown(self):
+        """Clean-up test data."""
+        del self.post
+
+    def test_post_str(self):
+        """Test post stringification."""
+        assert str(self.post) == "Title"
+
+    @patch(
+        "django.utils.timezone.now",
+        lambda: datetime(
+            day=11, month=9, year=2018, tzinfo=timezone.get_current_timezone()
+        ),
+    )
+    def test_post_publish(self):
+        """Test post has a published date after publish method called."""
+        assert self.post.published_date is None
+
+        self.post.publish()
+
+        assert self.post.published_date == datetime(
+            day=11, month=9, year=2018, tzinfo=timezone.get_current_timezone()
+        )

blog/tests/views_test.py

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+"""Test for views."""
+
+from datetime import datetime
+
+from django.contrib.auth.models import User
+from django.test import TestCase
+from django.urls import reverse
+
+from ..models import Post
+
+
+class PostListTest(TestCase):
+    """Tests for Post views."""
+
+    def setUp(self):
+        """Set up non-modifiable objects used by all test methods."""
+        bob = User.objects.create(username="bob")
+        self.post_first = Post.objects.create(
+            author=bob,
+            title="Title Bob",
+            text="Text bob",
+            published_date=datetime(day=8, month=11, year=2018),
+        )
+
+        john = User.objects.create(username="john")
+
+        self.post_second = Post.objects.create(
+            author=john, title="Title John", text="Text John"
+        )
+        self.post_third = Post.objects.create(
+            author=john, title="Title John 2", text="Text John 2"
+        )
+        self.post_third.publish()
+
+    def tearDown(self):
+        """Clean-up test data."""
+        del self.post_first
+        del self.post_second
+        del self.post_third
+
+    def test_post_list_correct_order(self):
+        """Test show post list on the page and test correct order."""
+        response = self.client.get(reverse("post_list"))
+        assert response.status_code == 200
+
+        self.assertTemplateUsed(response, "blog/post_list.html", "blog/base.html")
+
+        assert len(response.context["posts"]) == 2
+
+        first_title_on_the_page = response.context["posts"][0].title
+        first_text_on_the_page = response.context["posts"][0].text
+
+        second_title_on_the_page = response.context["posts"][1].title
+        second_text_on_the_page = response.context["posts"][1].text
+
+        assert first_title_on_the_page == "Title John 2"
+        assert first_text_on_the_page == "Text John 2"
+
+        assert second_title_on_the_page == "Title Bob"
+        assert second_text_on_the_page == "Text bob"
+
+    def test_post_detail(self):
+        """Test post contents displayed correctly."""
+        response = self.client.get(reverse("post_detail", kwargs={"pk": 1}))
+        assert response.status_code == 200
+
+        self.assertTemplateUsed(response, "blog/post_detail.html", "blog/base.html")
+
+        title_detail_db = Post.objects.filter(pk=1)[0].title
+        title_detail_page = response.context["post"].title
+
+        assert title_detail_db == title_detail_page
+
+        text_detail_db = Post.objects.filter(pk=1)[0].text
+        text_detail_page = response.context["post"].text
+
+        assert text_detail_db == text_detail_page
+
+    def test_post_new_and_edit(self):
+        """Test create and edit post."""
+        response = self.client.get(reverse("post_new"))
+        assert response.status_code == 200
+
+        paul_password = "test"
+        paul = User.objects.create_superuser(
+            username="paul", password=paul_password, email="[email protected]"
+        )
+        self.client.login(username=paul.username, password=paul_password)
+
+        response = self.client.post(
+            reverse("post_new"),
+            {
+                "author": paul,
+                "title": "Post with post new",
+                "text": "Text with post new",
+            },
+            follow=True,
+        )
+        assert response.status_code == 200
+
+        self.assertTemplateUsed(response, "blog/post_detail.html", "blog/base.html")
+
+        title_new_in_db = Post.objects.filter(pk=4)[0].title
+        title_new_on_the_page = response.context["post"].title
+
+        assert title_new_in_db == title_new_on_the_page
+
+        text_new_in_db = Post.objects.filter(pk=4)[0].text
+        text_new_on_the_page = response.context["post"].text
+
+        assert text_new_in_db == text_new_on_the_page
+
+        response = self.client.post(
+            reverse("post_edit", kwargs={"pk": 4}),
+            {
+                "author": paul,
+                "title": "Post with post edit",
+                "text": "Text with post edit",
+            },
+            follow=True,
+        )
+
+        title_edit_in_db = Post.objects.filter(pk=4)[0].title
+        title_edit_on_the_page = response.context["post"].title
+
+        assert title_edit_in_db == title_edit_on_the_page
+
+        response = self.client.get(reverse("post_edit", kwargs={"pk": 1}))
+        assert response.status_code == 200