Add some more unit testing for the builds

InvenTree/InvenTree/settings.py

@@ -205,10 +205,12 @@ When running unit tests, enforce usage of sqlite3 database,
 so that the tests can be run in RAM without any setup requirements
 """
 if 'test' in sys.argv:
-    eprint('Running tests - Using sqlite3 memory database')
+    eprint('InvenTree: Running tests - Using sqlite3 memory database')
     DATABASES['default'] = {
+        # Ensure sqlite3 backend is being used
         'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': 'test_db.sqlite3'
+        # Doesn't matter what the database is called, it is executed in RAM
+        'NAME': 'ram_test_db.sqlite3',
     }
 
 # Database backend selection

InvenTree/build/models.py

@@ -371,7 +371,8 @@ class Build(MPTTModel):
         parts = []
 
         for item in self.part.bom_items.all().prefetch_related('sub_part'):
-            part = {'part': item.sub_part,
+            part = {
+                'part': item.sub_part,
                 'per_build': item.quantity,
                 'quantity': item.quantity * self.quantity,
                 'allocated': self.getAllocatedQuantity(item.sub_part)

InvenTree/build/test_build.py

@@ -0,0 +1,181 @@
+# -*- coding: utf-8 -*-
+
+from django.test import TestCase
+
+from django.core.exceptions import ValidationError
+from django.db import transaction
+from django.db.utils import IntegrityError
+
+from build.models import Build, BuildItem
+from stock.models import StockItem
+from part.models import Part, BomItem
+from InvenTree import status_codes as status
+
+
+class BuildTest(TestCase):
+    """
+    Run some tests to ensure that the Build model is working properly.
+    """
+
+    def setUp(self):
+        """
+        Initialize data to use for these tests.
+        """
+
+        # Create a base "Part"
+        self.assembly = Part.objects.create(
+            name="An assembled part",
+            description="Why does it matter what my description is?",
+            assembly=True
+        )
+
+        self.sub_part_1 = Part.objects.create(
+            name="Widget A",
+            description="A widget",
+            component=True
+        )
+
+        self.sub_part_2 = Part.objects.create(
+            name="Widget B",
+            description="A widget",
+            component=True
+        )
+
+        # Create BOM item links for the parts
+        BomItem.objects.create(
+            part=self.assembly,
+            sub_part=self.sub_part_1,
+            quantity=10
+        )
+
+        BomItem.objects.create(
+            part=self.assembly,
+            sub_part=self.sub_part_2,
+            quantity=25
+        )
+
+        # Create a "Build" object to make 10x objects
+        self.build = Build.objects.create(
+            title="This is a build",
+            part=self.assembly,
+            quantity=10
+        )
+
+        # Create some stock items to assign to the build
+        self.stock_1_1 = StockItem.objects.create(part=self.sub_part_1, quantity=1000)
+        self.stock_1_2 = StockItem.objects.create(part=self.sub_part_1, quantity=100)
+
+        self.stock_2_1 = StockItem.objects.create(part=self.sub_part_2, quantity=5000)
+
+    def test_init(self):
+        # Perform some basic tests before we start the ball rolling
+
+        self.assertEqual(StockItem.objects.count(), 3)
+        self.assertEqual(self.build.status, status.BuildStatus.PENDING)
+        self.assertFalse(self.build.isFullyAllocated())
+
+        self.assertFalse(self.build.isPartFullyAllocated(self.sub_part_1))
+        self.assertFalse(self.build.isPartFullyAllocated(self.sub_part_2))
+
+        self.assertEqual(self.build.getRequiredQuantity(self.sub_part_1), 100)
+        self.assertEqual(self.build.getRequiredQuantity(self.sub_part_2), 250)
+
+        self.assertTrue(self.build.can_build)
+        self.assertFalse(self.build.is_complete)
+
+    def test_duplicate_bom_line(self):
+        # Try to add a duplicate BOM item - it should fail!
+
+        with self.assertRaises(IntegrityError):
+            BomItem.objects.create(
+                part=self.assembly,
+                sub_part=self.sub_part_1,
+                quantity=99
+            )
+
+    def allocate_stock(self, q11, q12, q21):
+        # Assign stock to this build
+
+        BuildItem.objects.create(
+            build=self.build,
+            stock_item=self.stock_1_1,
+            quantity=q11
+        )
+
+        BuildItem.objects.create(
+            build=self.build,
+            stock_item=self.stock_1_2,
+            quantity=q12
+        )
+
+        BuildItem.objects.create(
+            build=self.build,
+            stock_item=self.stock_2_1,
+            quantity=q21
+        )
+
+        with transaction.atomic():
+            with self.assertRaises(IntegrityError):
+                BuildItem.objects.create(
+                    build=self.build,
+                    stock_item=self.stock_2_1,
+                    quantity=99
+                )
+
+        self.assertEqual(BuildItem.objects.count(), 3)
+
+    def test_partial_allocation(self):
+
+        self.allocate_stock(50, 50, 200)
+
+        self.assertFalse(self.build.isFullyAllocated())
+        self.assertTrue(self.build.isPartFullyAllocated(self.sub_part_1))
+        self.assertFalse(self.build.isPartFullyAllocated(self.sub_part_2))
+
+
+    def test_cancel(self):
+
+        self.allocate_stock(50, 50, 200)
+        self.build.cancelBuild(None)
+
+        self.assertEqual(BuildItem.objects.count(), 0)
+
+    def test_complete(self):
+
+        self.allocate_stock(50, 50, 250)
+
+        self.assertTrue(self.build.isFullyAllocated())
+
+        self.build.completeBuild(None, None, None)
+
+        self.assertEqual(self.build.status, status.BuildStatus.COMPLETE)
+
+        # the original BuildItem objects should have been deleted!
+        self.assertEqual(BuildItem.objects.count(), 0)
+
+        # Four new stock items should have been created!
+        # - One for the build output
+        # - Three for the split items assigned to the build
+        self.assertEqual(StockItem.objects.count(), 7)
+
+        # Stock should have been subtracted from the original items
+        self.assertEqual(StockItem.objects.get(pk=1).quantity, 950)
+        self.assertEqual(StockItem.objects.get(pk=2).quantity, 50)
+        self.assertEqual(StockItem.objects.get(pk=3).quantity, 4750)
+
+        # New stock items created and assigned to the build
+        self.assertEqual(StockItem.objects.get(pk=4).quantity, 50)
+        self.assertEqual(StockItem.objects.get(pk=4).build_order, self.build)
+        self.assertEqual(StockItem.objects.get(pk=4).status, status.StockStatus.ASSIGNED_TO_BUILD)
+
+        self.assertEqual(StockItem.objects.get(pk=5).quantity, 50)
+        self.assertEqual(StockItem.objects.get(pk=5).build_order, self.build)
+        self.assertEqual(StockItem.objects.get(pk=5).status, status.StockStatus.ASSIGNED_TO_BUILD)
+
+        self.assertEqual(StockItem.objects.get(pk=6).quantity, 250)
+        self.assertEqual(StockItem.objects.get(pk=6).build_order, self.build)
+        self.assertEqual(StockItem.objects.get(pk=6).status, status.StockStatus.ASSIGNED_TO_BUILD)
+        
+        # And a new stock item created for the build output
+        self.assertEqual(StockItem.objects.get(pk=7).quantity, 10)
+        self.assertEqual(StockItem.objects.get(pk=7).build, self.build)

InvenTree/order/test_sales_order.py

@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 from django.test import TestCase
 
 from django.core.exceptions import ValidationError