diff --git a/InvenTree/InvenTree/tests.py b/InvenTree/InvenTree/tests.py
index ccdf2e2d43..2d1b345687 100644
--- a/InvenTree/InvenTree/tests.py
+++ b/InvenTree/InvenTree/tests.py
@@ -1,5 +1,6 @@
 from django.test import TestCase
 import django.core.exceptions as django_exceptions
+from django.core.exceptions import ValidationError
 
 from .validators import validate_overage, validate_part_name
 from . import helpers
@@ -100,3 +101,50 @@ class TestDownloadFile(TestCase):
     def test_download(self):
         helpers.DownloadFile("hello world", "out.txt")
         helpers.DownloadFile(bytes("hello world".encode("utf8")), "out.bin")
+
+
+class TestSerialNumberExtraction(TestCase):
+    """ Tests for serial number extraction code """
+
+    def test_simple(self):
+
+        e = helpers.ExtractSerialNumbers
+
+        sn = e("1-5", 5)
+        self.assertEqual(len(sn), 5)
+        for i in range(1, 6):
+            self.assertIn(i, sn)
+
+        sn = e("1, 2, 3, 4, 5", 5)
+        self.assertEqual(len(sn), 5)
+
+        sn = e("1-5, 10-15", 11)
+        self.assertIn(3, sn)
+        self.assertIn(13, sn)
+
+    def test_failures(self):
+
+        e = helpers.ExtractSerialNumbers
+
+        # Test duplicates
+        with self.assertRaises(ValidationError):
+            e("1,2,3,3,3", 5)
+
+        # Test invalid length
+        with self.assertRaises(ValidationError):
+            e("1,2,3", 5)
+
+        # Test empty string
+        with self.assertRaises(ValidationError):
+            e(", , ,", 0)
+
+        # Test incorrect sign in group
+        with self.assertRaises(ValidationError):
+            e("10-2", 8)
+
+        # Test invalid group
+        with self.assertRaises(ValidationError):
+            e("1-5-10", 10)
+
+        with self.assertRaises(ValidationError):
+            e("10, a, 7-70j", 4)
diff --git a/InvenTree/order/test_views.py b/InvenTree/order/test_views.py
new file mode 100644
index 0000000000..a197455a8a
--- /dev/null
+++ b/InvenTree/order/test_views.py
@@ -0,0 +1,77 @@
+""" Unit tests for Order views (see views.py) """
+
+from django.test import TestCase
+from django.urls import reverse
+from django.contrib.auth import get_user_model
+
+
+class OrderViewTestCase(TestCase):
+    
+    fixtures = [
+        'category',
+        'part',
+        'bom',
+        'location',
+        'company',
+        'supplier_part',
+        'stock',
+        'order',
+    ]
+
+    def setUp(self):
+        super().setUp()
+
+        # Create a user
+        User = get_user_model()
+        User.objects.create_user('username', 'user@email.com', 'password')
+
+        self.client.login(username='username', password='password')
+
+
+class OrderListTest(OrderViewTestCase):
+
+    def test_order_list(self):
+        response = self.client.get(reverse('purchase-order-index'))
+
+        self.assertEqual(response.status_code, 200)
+
+
+class POTests(OrderViewTestCase):
+    """ Tests for PurchaseOrder views """
+
+    def test_detail_view(self):
+        """ Retrieve PO detail view """
+        response = self.client.get(reverse('purchase-order-detail', args=(1,)))
+        self.assertEqual(response.status_code, 200)
+        keys = response.context.keys()
+        self.assertIn('OrderStatus', keys)
+
+    def test_po_create(self):
+        """ Launch forms to create new PurchaseOrder"""
+        url = reverse('purchase-order-create')
+
+        # Without a supplier ID
+        response = self.client.get(url, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # With a valid supplier ID
+        response = self.client.get(url, {'supplier': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # With an invalid supplier ID
+        response = self.client.get(url, {'supplier': 'goat'}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_po_edit(self):
+        """ Launch form to edit a PurchaseOrder """
+
+        response = self.client.get(reverse('purchase-order-edit', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_po_export(self):
+        """ Export PurchaseOrder """
+
+        response = self.client.get(reverse('purchase-order-export', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+
+        # Response should be streaming-content (file download)
+        self.assertIn('streaming_content', dir(response))
diff --git a/InvenTree/order/views.py b/InvenTree/order/views.py
index ae27a0bcc4..5b7aca5cdc 100644
--- a/InvenTree/order/views.py
+++ b/InvenTree/order/views.py
@@ -84,7 +84,7 @@ class PurchaseOrderCreate(AjaxCreateView):
             try:
                 supplier = Company.objects.get(id=supplier_id)
                 initials['supplier'] = supplier
-            except Company.DoesNotExist:
+            except (Company.DoesNotExist, ValueError):
                 pass
 
         return initials
diff --git a/InvenTree/part/fixtures/part.yaml b/InvenTree/part/fixtures/part.yaml
index 7d669cf49d..3f7fbb9886 100644
--- a/InvenTree/part/fixtures/part.yaml
+++ b/InvenTree/part/fixtures/part.yaml
@@ -58,4 +58,4 @@
     name: 'Bob'
     description: 'Can we build it?'
     assembly: true
-    
\ No newline at end of file
+    purchaseable: false
\ No newline at end of file
diff --git a/InvenTree/part/test_views.py b/InvenTree/part/test_views.py
new file mode 100644
index 0000000000..c1dc38862c
--- /dev/null
+++ b/InvenTree/part/test_views.py
@@ -0,0 +1,218 @@
+""" Unit tests for Part Views (see views.py) """
+
+from django.test import TestCase
+from django.urls import reverse
+from django.contrib.auth import get_user_model
+
+from .models import Part
+
+
+class PartViewTestCase(TestCase):
+    
+    fixtures = [
+        'category',
+        'part',
+        'bom',
+        'location',
+        'company',
+        'supplier_part',
+    ]
+
+    def setUp(self):
+        super().setUp()
+
+        # Create a user
+        User = get_user_model()
+        User.objects.create_user('username', 'user@email.com', 'password')
+
+        self.client.login(username='username', password='password')
+
+
+class PartListTest(PartViewTestCase):
+
+    def test_part_index(self):
+        response = self.client.get(reverse('part-index'))
+        self.assertEqual(response.status_code, 200)
+        
+        keys = response.context.keys()
+        self.assertIn('csrf_token', keys)
+        self.assertIn('parts', keys)
+        self.assertIn('user', keys)
+    
+    def test_export(self):
+        """ Export part data to CSV """
+
+        response = self.client.get(reverse('part-export'), {'parts': '1,2,3,4,5,6,7,8,9,10'}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+
+        self.assertEqual(response.status_code, 200)
+        self.assertIn('streaming_content', dir(response))
+
+
+class PartDetailTest(PartViewTestCase):
+
+    def test_part_detail(self):
+        """ Test that we can retrieve a part detail page """
+
+        pk = 1
+
+        response = self.client.get(reverse('part-detail', args=(pk,)))
+        self.assertEqual(response.status_code, 200)
+
+        part = Part.objects.get(pk=pk)
+
+        keys = response.context.keys()
+
+        self.assertIn('part', keys)
+        self.assertIn('category', keys)
+
+        self.assertEqual(response.context['part'].pk, pk)
+        self.assertEqual(response.context['category'], part.category)
+
+        self.assertFalse(response.context['editing_enabled'])
+
+    def test_editable(self):
+
+        pk = 1
+        response = self.client.get(reverse('part-detail', args=(pk,)), {'edit': True})
+
+        self.assertEqual(response.status_code, 200)
+        self.assertTrue(response.context['editing_enabled'])
+
+    def test_bom_download(self):
+        """ Test downloading a BOM for a valid part """
+
+        response = self.client.get(reverse('bom-export', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+        self.assertIn('streaming_content', dir(response))
+    
+
+class PartTests(PartViewTestCase):
+    """ Tests for Part forms """
+
+    def test_part_edit(self):
+        response = self.client.get(reverse('part-edit', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        keys = response.context.keys()
+        data = str(response.content)
+
+        self.assertIn('part', keys)
+        self.assertIn('csrf_token', keys)
+
+        self.assertIn('html_form', data)
+        self.assertIn('"title":', data)
+
+    def test_part_create(self):
+        """ Launch form to create a new part """
+        response = self.client.get(reverse('part-create'), {'category': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # And again, with an invalid category
+        response = self.client.get(reverse('part-create'), {'category': 9999}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # And again, with no category
+        response = self.client.get(reverse('part-create'), {'name': 'Test part'}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_part_duplicate(self):
+        """ Launch form to duplicate part """
+
+        # First try with an invalid part
+        response = self.client.get(reverse('part-duplicate', args=(9999,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        response = self.client.get(reverse('part-duplicate', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_make_variant(self):
+
+        response = self.client.get(reverse('make-part-variant', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+
+class PartAttachmentTests(PartViewTestCase):
+
+    def test_valid_create(self):
+        """ test creation of an attachment for a valid part """
+
+        response = self.client.get(reverse('part-attachment-create'), {'part': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_invalid_create(self):
+        """ test creation of an attachment for an invalid part """
+
+        with self.assertRaises(Part.DoesNotExist):
+            self.client.get(reverse('part-attachment-create'), {'part': 999}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+
+    def test_edit(self):
+        """ test editing an attachment """
+
+        # TODO
+        pass
+
+
+class PartQRTest(PartViewTestCase):
+    """ Tests for the Part QR Code AJAX view """
+
+    def test_html_redirect(self):
+        # A HTML request for a QR code should be redirected (use an AJAX request instead)
+        response = self.client.get(reverse('part-qr', args=(1,)))
+        self.assertEqual(response.status_code, 302)
+
+    def test_valid_part(self):
+        response = self.client.get(reverse('part-qr', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+        
+        data = str(response.content)
+
+        self.assertIn('Part QR Code', data)
+        self.assertIn('<img src=', data)
+
+    def test_invalid_part(self):
+        response = self.client.get(reverse('part-qr', args=(9999,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+
+        data = str(response.content)
+        
+        self.assertIn('Error:', data)
+
+
+class CategoryTest(PartViewTestCase):
+    """ Tests for PartCategory related views """
+
+    def test_create(self):
+        """ Test view for creating a new category """
+        response = self.client.get(reverse('category-create'), {'category': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+
+        self.assertEqual(response.status_code, 200)
+
+    def test_create_invalid_parent(self):
+        """ test creation of a new category with an invalid parent """
+        response = self.client.get(reverse('category-create'), {'category': 9999}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+
+        # Form should still return OK
+        self.assertEqual(response.status_code, 200)
+
+    def test_edit(self):
+        """ Retrieve the part category editing form """
+        response = self.client.get(reverse('category-edit', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+
+class BomItemTests(PartViewTestCase):
+    """ Tests for BomItem related views """
+
+    def test_create_valid_parent(self):
+        """ Create a BomItem for a valid part """
+        response = self.client.get(reverse('bom-item-create'), {'parent': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_create_no_parent(self):
+        """ Create a BomItem without a parent """
+        response = self.client.get(reverse('bom-item-create'), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_create_invalid_parent(self):
+        """ Create a BomItem with an invalid parent """
+        response = self.client.get(reverse('bom-item-create'), {'parent': 99999}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
diff --git a/InvenTree/part/views.py b/InvenTree/part/views.py
index 74adc490b8..b7bed73003 100644
--- a/InvenTree/part/views.py
+++ b/InvenTree/part/views.py
@@ -295,7 +295,7 @@ class PartDuplicate(AjaxCreateView):
     def get_part_to_copy(self):
         try:
             return Part.objects.get(id=self.kwargs['pk'])
-        except Part.DoesNotExist:
+        except (Part.DoesNotExist, ValueError):
             return None
 
     def get_context_data(self):
@@ -419,7 +419,7 @@ class PartCreate(AjaxCreateView):
         if cat_id:
             try:
                 context['category'] = PartCategory.objects.get(pk=cat_id)
-            except PartCategory.DoesNotExist:
+            except (PartCategory.DoesNotExist, ValueError):
                 pass
 
         return context
@@ -494,7 +494,7 @@ class PartCreate(AjaxCreateView):
                 category = PartCategory.objects.get(pk=self.get_category_id())
                 initials['category'] = category
                 initials['keywords'] = category.default_keywords
-            except PartCategory.DoesNotExist:
+            except (PartCategory.DoesNotExist, ValueError):
                 pass
         
         # Allow initial data to be passed through as arguments
diff --git a/InvenTree/stock/test_views.py b/InvenTree/stock/test_views.py
new file mode 100644
index 0000000000..5a7278d7d8
--- /dev/null
+++ b/InvenTree/stock/test_views.py
@@ -0,0 +1,130 @@
+""" Unit tests for Stock views (see views.py) """
+
+from django.test import TestCase
+from django.urls import reverse
+from django.contrib.auth import get_user_model
+
+
+class StockViewTestCase(TestCase):
+
+    fixtures = [
+        'category',
+        'part',
+        'company',
+        'location',
+        'supplier_part',
+        'stock',
+    ]
+
+    def setUp(self):
+        super().setUp()
+
+        # Create a user
+        User = get_user_model()
+        User.objects.create_user('username', 'user@email.com', 'password')
+
+        self.client.login(username='username', password='password')
+
+
+class StockListTest(StockViewTestCase):
+    """ Tests for Stock list views """
+
+    def test_stock_index(self):
+        response = self.client.get(reverse('stock-index'))
+        self.assertEqual(response.status_code, 200)
+
+
+class StockLocationTest(StockViewTestCase):
+    """ Tests for StockLocation views """
+
+    def test_location_edit(self):
+        response = self.client.get(reverse('stock-location-edit', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_qr_code(self):
+        # Request the StockLocation QR view
+        response = self.client.get(reverse('stock-location-qr', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Test for an invalid StockLocation
+        response = self.client.get(reverse('stock-location-qr', args=(999,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_create(self):
+        # Test StockLocation creation view
+        response = self.client.get(reverse('stock-location-create'), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Create with a parent
+        response = self.client.get(reverse('stock-location-create'), {'location': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Create with an invalid parent
+        response = self.client.get(reverse('stock-location-create'), {'location': 999}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+        
+
+class StockItemTest(StockViewTestCase):
+    """" Tests for StockItem views """
+
+    def test_qr_code(self):
+        # QR code for a valid item
+        response = self.client.get(reverse('stock-item-qr', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # QR code for an invalid item
+        response = self.client.get(reverse('stock-item-qr', args=(9999,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        data = str(response.content)
+        self.assertIn('Error:', data)
+
+    def test_adjust_items(self):
+        url = reverse('stock-adjust')
+
+        # Move items
+        response = self.client.get(url, {'stock[]': [1, 2, 3, 4, 5], 'action': 'move'}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Count part
+        response = self.client.get(url, {'part': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Remove items
+        response = self.client.get(url, {'location': 1, 'action': 'take'}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Add items
+        response = self.client.get(url, {'item': 1, 'action': 'add'}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Blank response
+        response = self.client.get(url, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # TODO - Tests for POST data
+
+    def test_edit_item(self):
+        # Test edit view for StockItem
+        response = self.client.get(reverse('stock-item-edit', args=(1,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Test with a non-purchaseable part
+        response = self.client.get(reverse('stock-item-edit', args=(100,)), HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+    def test_create_item(self):
+        # Test creation of StockItem
+        response = self.client.get(reverse('stock-item-create'), {'part': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        response = self.client.get(reverse('stock-item-create'), {'part': 999}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Copy from a valid item, valid location
+        response = self.client.get(reverse('stock-item-create'), {'location': 1, 'copy': 1}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
+
+        # Copy from an invalid item, invalid location
+        response = self.client.get(reverse('stock-item-create'), {'location': 999, 'copy': 9999}, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        self.assertEqual(response.status_code, 200)
diff --git a/InvenTree/stock/views.py b/InvenTree/stock/views.py
index 6fbea9d885..3d36eb91b9 100644
--- a/InvenTree/stock/views.py
+++ b/InvenTree/stock/views.py
@@ -168,9 +168,9 @@ class StockAdjust(AjaxView, FormMixin):
         elif 'item' in self.request.GET:
             items = [StockItem.objects.get(id=self.request.GET.get('item'))]
 
-        # Unsupported query
+        # Unsupported query (no items)
         else:
-            items = None
+            items = []
 
         for item in items: