Add Docker-executed pytest suite with >90% coverage

apps/blog/tests/test_models.py

@@ -0,0 +1,42 @@
+import pytest
+from django.db import IntegrityError
+from taggit.models import Tag
+
+from apps.blog.models import ArticleIndexPage, ArticlePage, HomePage, TagMetadata
+from apps.blog.tests.factories import AuthorFactory
+
+
+@pytest.mark.django_db
+def test_home_page_creation(home_page):
+    assert HomePage.objects.count() == 1
+
+
+@pytest.mark.django_db
+def test_article_index_parent_restriction():
+    assert ArticleIndexPage.parent_page_types == ["blog.HomePage"]
+
+
+@pytest.mark.django_db
+def test_article_compute_read_time_excludes_code(home_page):
+    index = ArticleIndexPage(title="Articles", slug="articles")
+    home_page.add_child(instance=index)
+    author = AuthorFactory()
+    article = ArticlePage(
+        title="A",
+        slug="a",
+        author=author,
+        summary="s",
+        body=[("rich_text", "<p>one two three</p>"), ("code", {"language": "python", "raw_code": "x y z"})],
+    )
+    index.add_child(instance=article)
+    article.save()
+    assert article.read_time_mins == 1
+
+
+@pytest.mark.django_db
+def test_tag_metadata_css_and_uniqueness():
+    tag = Tag.objects.create(name="llms", slug="llms")
+    meta = TagMetadata.objects.create(tag=tag, colour="cyan")
+    assert meta.get_css_classes()["bg"].startswith("bg-cyan")
+    with pytest.raises(IntegrityError):
+        TagMetadata.objects.create(tag=tag, colour="pink")