new FT test_theme for theme switcher functionality; theme-switcher content added to home.html, several dashboard views & urls, all appropriate ITs & UTs; lyric user model saves theme (migrations run); django-compressor and django-libsass libraries added to dependencies

src/apps/dashboard/tests/integrated/test_views.py

@@ -255,3 +255,50 @@ class ViewAuthListTest(TestCase):
         self.client.force_login(guest)
         response = self.client.get(reverse("view_list", args=[self.our_list.id]))
         self.assertEqual(response.status_code, 200)
+
+class SetThemeTest(TestCase):
+    def setUp(self):
+        self.user = User.objects.create(email="a@b.cde")
+        self.client.force_login(self.user)
+        self.url = reverse("home")
+    
+    def test_anonymous_user_is_redirected_home(self):
+        response = self.client.post("/dashboard/set_theme")
+        self.assertRedirects(response, "/")
+
+    def test_set_theme_updates_user_theme(self):
+        User.objects.filter(pk=self.user.pk).update(theme="theme-sheol")
+        self.client.post("/dashboard/set_theme", data={"theme": "theme-default"})
+        self.user.refresh_from_db()
+        self.assertEqual(self.user.theme, "theme-default")
+
+    def test_locked_theme_is_rejected(self):
+        response = self.client.post("/dashboard/set_theme", data={"theme": "theme-nirvana"})
+        self.user.refresh_from_db()
+        self.assertEqual(self.user.theme, "theme-default")
+        self.assertRedirects(response, "/")
+
+    def test_set_theme_redirects_home(self):
+        response = self.client.post("/dashboard/set_theme", data={"theme": "theme-default"})
+        self.assertRedirects(response, "/")
+
+    def test_my_lists_contains_set_theme_form(self):
+        response = self.client.get(self.url)
+        parsed = lxml.html.fromstring(response.content)
+        forms = parsed.cssselect('form[action="/dashboard/set_theme"]')
+        self.assertEqual(len(forms), 1)
+
+    def test_active_theme_swatch_has_active_class(self):
+        response = self.client.get(self.url)
+        parsed = lxml.html.fromstring(response.content)
+        [active] = parsed.cssselect(".swatch.active")
+        self.assertIn("theme-default", active.classes)
+
+    def test_locked_themes_are_not_forms(self):
+        response = self.client.get(self.url)
+        parsed = lxml.html.fromstring(response.content)
+        locked = parsed.cssselect(".swatch.locked")
+        self.assertEqual(len(locked), 2)
+        # they mustn't be button els
+        for swatch in locked:
+            self.assertNotEqual(swatch.tag, "button")

src/apps/dashboard/urls.py

@@ -6,4 +6,5 @@ urlpatterns = [
     path('list/<uuid:list_id>/', views.view_list, name='view_list'),
     path('users/<uuid:user_id>/', views.my_lists, name='my_lists'),
     path('list/<uuid:list_id>/share_list', views.share_list, name="share_list"),
+    path('set_theme', views.set_theme, name='set_theme'),
 ]

src/apps/dashboard/views.py

@@ -7,6 +7,9 @@ from .models import Item, List
 from apps.lyric.models import User
 
 
+UNLOCKED_THEMES = frozenset(["theme-default"])
+
+
 def home_page(request):
     return render(request, "apps/dashboard/home.html", {"form": ItemForm()})
 
@@ -59,3 +62,13 @@ def share_list(request, list_id):
         pass
     messages.success(request, "An invite has been sent if that address is registered.")
     return redirect(our_list)
+
+def set_theme(request):
+    if not request.user.is_authenticated:
+        return redirect("home")
+    if request.method == "POST":
+        theme = request.POST.get("theme", "")
+        if theme in UNLOCKED_THEMES:
+            request.user.theme = theme
+            request.user.save(update_fields=["theme"])
+    return redirect("home")

src/apps/lyric/migrations/0003_user_theme.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0 on 2026-03-02 04:15
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('lyric', '0002_user_searchable_user_username'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='theme',
+            field=models.CharField(default='theme-default', max_length=32),
+        ),
+    ]

src/apps/lyric/models.py

@@ -26,6 +26,8 @@ class User(AbstractBaseUser):
     email = models.EmailField(unique=True)
     username = models.CharField(max_length=35, unique=True, null=True, blank=True)
     searchable = models.BooleanField(default=False)
+    theme = models.CharField(max_length=32, default="theme-default")
+
     is_staff = models.BooleanField(default=False)
     is_superuser = models.BooleanField(default=False)
 

src/apps/lyric/tests/integrated/test_models.py

@@ -50,3 +50,8 @@ class UserManagerTest(TestCase):
             password="correct-password",
         )
         self.assertTrue(user.check_password("correct-password"))
+
+class UserThemeTest(TestCase):
+    def test_theme_field_defaults_to_theme_default(self):
+        user = User.objects.create(email="a@b.cde")
+        self.assertEqual(user.theme, "theme-default")