Add basic test case

Author: ongchi

tests/test_placeholder.py

@@ -0,0 +1,52 @@
+from django.contrib.auth.models import Group, Permission
+from django.contrib.contenttypes.models import ContentType
+from django.test import TestCase
+from testapp.models import MathPage
+from wagtail.blocks.stream_block import StreamValue
+from wagtail.models import Page
+from wagtail.test.utils import WagtailTestUtils
+
+
+class TestStreamField(WagtailTestUtils, TestCase):
+    def setUp(self):
+        self.user = self.login()
+
+        # Convert the user into an moderator
+        self.moderators_group = Group.objects.get(name="Moderators")
+        for permission in Permission.objects.filter(
+            content_type=ContentType.objects.get_for_model(MathPage)
+        ):
+            self.moderators_group.permissions.add(permission)
+        self.user.is_superuser = False
+        self.user.groups.add(self.moderators_group)
+        self.user.save()
+
+        # Create test page with a draft revision
+        self.page = Page.objects.get(id=1).add_child(
+            instance=MathPage(title="Test", slug="test")
+        )
+
+        self.page.body = StreamValue(
+            stream_block=self.page.body.stream_block,
+            stream_data=[
+                {
+                    "type": "equation",
+                    "value": "$ y = ax + b $",
+                }
+            ],
+            is_lazy=True,
+        )
+
+        self.page.save_revision().publish()
+
+    def test_streamfield_value(self):
+        page = MathPage.objects.first()
+        self.assertTrue(page is not None)
+
+        response = self.client.get(f"/admin/pages/{page.id}/edit/")
+        self.assertEqual(response.status_code, 200)
+
+        self.assertRegex(
+            response.content.decode(),
+            r""value": "\$ y = ax \+ b \$"",
+        )

tests/test_streamfield.py

@@ -151,3 +151,6 @@
 
 WAGTAIL_SITE_NAME = "Wagtail Polymath test site"
 WAGTAILADMIN_BASE_URL = "http://localhost:8020"
+
+# Wagtail-polymath settings
+WAGTAILPOLYMATH_ENGINE = os.environ.setdefault("WAGTAILPOLYMATH_ENGINE", "mathjax")

tests/testproject/settings.py

@@ -2,8 +2,8 @@
 min_version = 4.11
 
 envlist =
-    python{3.8,3.9,3.10,3.11}-django{4.2}-wagtail{5.2,6.1}-{sqlite}
-    python{3.10,3.11,3.12}-django{5.0}-wagtail{5.2,6.1}-{sqlite}
+    python{3.8,3.9,3.10,3.11}-django{4.2}-wagtail{5.2,6.1}-{sqlite}-{mathjax,katex}
+    python{3.10,3.11,3.12}-django{5.0}-wagtail{5.2,6.1}-{sqlite}-{mathjax,katex}
 
 [gh-actions]
 python =
@@ -29,6 +29,8 @@ setenv =
     # will use the Python 3.12+ sys.monitoring when available
     COVERAGE_CORE=sysmon
     COVERAGE_FILE = .coverage.{envname}
+    mathjax: WAGTAILPOLYMATH_ENGINE = mathjax
+    katex: WAGTAILPOLYMATH_ENGINE = katex
 
 deps =
     coverage>=7.0,<8.0