Add box detail page with thumbnails and view tests

boxes/tests.py

@@ -1,7 +1,8 @@
 from django.contrib.admin.sites import AdminSite
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.db import IntegrityError
-from django.test import TestCase
+from django.test import Client, TestCase
+from django.urls import reverse
 
 from .admin import BoxAdmin, BoxTypeAdmin, ThingAdmin, ThingTypeAdmin
 from .models import Box, BoxType, Thing, ThingType
@@ -337,3 +338,152 @@ class ThingAdminTests(TestCase):
     def test_search_fields(self):
         """ThingAdmin should search by name and description."""
         self.assertEqual(self.admin.search_fields, ('name', 'description'))
+
+
+class IndexViewTests(TestCase):
+    """Tests for the index view."""
+
+    def setUp(self):
+        """Set up test client."""
+        self.client = Client()
+
+    def test_index_returns_200(self):
+        """Index page should return 200 status."""
+        response = self.client.get('/')
+        self.assertEqual(response.status_code, 200)
+
+    def test_index_contains_labhelper(self):
+        """Index page should contain LabHelper title."""
+        response = self.client.get('/')
+        self.assertContains(response, 'LabHelper')
+
+    def test_index_contains_admin_link(self):
+        """Index page should contain link to admin."""
+        response = self.client.get('/')
+        self.assertContains(response, '/admin/')
+
+
+class BoxDetailViewTests(TestCase):
+    """Tests for the box detail view."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        self.client = Client()
+        self.box_type = BoxType.objects.create(
+            name='Standard Box',
+            width=200,
+            height=100,
+            length=300
+        )
+        self.box = Box.objects.create(
+            id='BOX001',
+            box_type=self.box_type
+        )
+        self.thing_type = ThingType.objects.create(name='Electronics')
+
+    def test_box_detail_returns_200(self):
+        """Box detail page should return 200 status."""
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertEqual(response.status_code, 200)
+
+    def test_box_detail_returns_404_for_invalid_box(self):
+        """Box detail page should return 404 for non-existent box."""
+        response = self.client.get('/box/INVALID/')
+        self.assertEqual(response.status_code, 404)
+
+    def test_box_detail_shows_box_id(self):
+        """Box detail page should show box ID."""
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, 'BOX001')
+
+    def test_box_detail_shows_box_type(self):
+        """Box detail page should show box type name."""
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, 'Standard Box')
+
+    def test_box_detail_shows_dimensions(self):
+        """Box detail page should show box dimensions."""
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, '200')
+        self.assertContains(response, '100')
+        self.assertContains(response, '300')
+
+    def test_box_detail_shows_empty_message(self):
+        """Box detail page should show empty message when no things."""
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, 'This box is empty')
+
+    def test_box_detail_shows_thing(self):
+        """Box detail page should show things in the box."""
+        Thing.objects.create(
+            name='Arduino Uno',
+            thing_type=self.thing_type,
+            box=self.box,
+            description='A microcontroller board'
+        )
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, 'Arduino Uno')
+        self.assertContains(response, 'Electronics')
+        self.assertContains(response, 'A microcontroller board')
+
+    def test_box_detail_shows_no_image_placeholder(self):
+        """Box detail page should show placeholder for things without images."""
+        Thing.objects.create(
+            name='Test Item',
+            thing_type=self.thing_type,
+            box=self.box
+        )
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, 'No image')
+
+    def test_box_detail_shows_multiple_things(self):
+        """Box detail page should show multiple things."""
+        Thing.objects.create(
+            name='Item One',
+            thing_type=self.thing_type,
+            box=self.box
+        )
+        Thing.objects.create(
+            name='Item Two',
+            thing_type=self.thing_type,
+            box=self.box
+        )
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, 'Item One')
+        self.assertContains(response, 'Item Two')
+
+    def test_box_detail_uses_correct_template(self):
+        """Box detail page should use the correct template."""
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertTemplateUsed(response, 'boxes/box_detail.html')
+
+    def test_box_detail_with_image(self):
+        """Box detail page should show thumbnail for things with images."""
+        # Create a simple 1x1 pixel PNG
+        image_data = (
+            b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01'
+            b'\x00\x00\x00\x01\x08\x02\x00\x00\x00\x90wS\xde\x00'
+            b'\x00\x00\x0cIDATx\x9cc\xf8\x0f\x00\x00\x01\x01\x00'
+            b'\x05\x18\xd8N\x00\x00\x00\x00IEND\xaeB`\x82'
+        )
+        image = SimpleUploadedFile(
+            name='test.png',
+            content=image_data,
+            content_type='image/png'
+        )
+        thing = Thing.objects.create(
+            name='Item With Image',
+            thing_type=self.thing_type,
+            box=self.box,
+            picture=image
+        )
+        response = self.client.get(f'/box/{self.box.id}/')
+        self.assertContains(response, 'Item With Image')
+        self.assertContains(response, '<img')
+        # Clean up
+        thing.picture.delete()
+
+    def test_box_detail_url_name(self):
+        """Box detail URL should be reversible by name."""
+        url = reverse('box_detail', kwargs={'box_id': 'BOX001'})
+        self.assertEqual(url, '/box/BOX001/')