adding

apps/landing/tests.py

@@ -0,0 +1,51 @@
+import datetime
+
+from django.test import TestCase
+from django.urls import reverse
+
+from apps.landing.models import Article
+
+
+def _make_article(**overrides):
+    defaults = {
+        "slug": "test-article",
+        "title": "عنوان تست",
+        "excerpt": "خلاصه تست",
+        "content_html": "<p>متن تست</p>",
+        "published_at": datetime.date(2020, 1, 1),
+        "is_published": True,
+    }
+    defaults.update(overrides)
+    return Article.objects.create(**defaults)
+
+
+class ArticlePublishScheduleTests(TestCase):
+    """published_at یک gate واقعی است — مقاله‌ی is_published=True با تاریخِ
+    آینده نباید تا رسیدن آن تاریخ در سایت دیده شود (انتشار پلکانی/زمان‌بندی‌شده)."""
+
+    def test_past_dated_article_appears_in_list(self):
+        _make_article(slug="past-one", published_at=datetime.date(2020, 1, 1))
+        response = self.client.get(reverse("landing:article_list"))
+        self.assertContains(response, "عنوان تست")
+
+    def test_future_dated_article_hidden_from_list(self):
+        future = datetime.date.today() + datetime.timedelta(days=10)
+        _make_article(slug="future-one", published_at=future)
+        response = self.client.get(reverse("landing:article_list"))
+        self.assertNotContains(response, "عنوان تست")
+
+    def test_future_dated_article_detail_is_404(self):
+        future = datetime.date.today() + datetime.timedelta(days=10)
+        article = _make_article(slug="future-two", published_at=future)
+        response = self.client.get(reverse("landing:article_detail", args=[article.slug]))
+        self.assertEqual(response.status_code, 404)
+
+    def test_unpublished_article_hidden_regardless_of_date(self):
+        _make_article(slug="draft-one", is_published=False, published_at=datetime.date(2020, 1, 1))
+        response = self.client.get(reverse("landing:article_list"))
+        self.assertNotContains(response, "عنوان تست")
+
+    def test_today_dated_article_is_visible(self):
+        _make_article(slug="today-one", published_at=datetime.date.today())
+        response = self.client.get(reverse("landing:article_list"))
+        self.assertContains(response, "عنوان تست")