Add canonical and social SEO meta tags for core page templates

apps/blog/tests/test_seo.py

@@ -0,0 +1,35 @@
+import pytest
+
+from apps.blog.models import ArticleIndexPage, ArticlePage
+from apps.blog.tests.factories import AuthorFactory
+
+
+@pytest.mark.django_db
+def test_article_page_renders_core_seo_meta(client, home_page):
+    index = ArticleIndexPage(title="Articles", slug="articles")
+    home_page.add_child(instance=index)
+    author = AuthorFactory()
+    article = ArticlePage(
+        title="SEO Article",
+        slug="seo-article",
+        author=author,
+        summary="Summary content",
+        body=[("rich_text", "<p>Body</p>")],
+    )
+    index.add_child(instance=article)
+    article.save_revision().publish()
+
+    resp = client.get("/articles/seo-article/")
+    html = resp.content.decode()
+    assert resp.status_code == 200
+    assert '<link rel="canonical" href="http' in html
+    assert 'property="og:type" content="article"' in html
+    assert 'name="twitter:card" content="summary_large_image"' in html
+
+
+@pytest.mark.django_db
+def test_homepage_renders_website_og_type(client, home_page):
+    resp = client.get("/")
+    html = resp.content.decode()
+    assert resp.status_code == 200
+    assert 'property="og:type" content="website"' in html