diff --git a/specifyweb/backend/businessrules/tests/test_gift.py b/specifyweb/backend/businessrules/tests/test_gift.py
index 5a890f4f871..540b69e07c4 100644
--- a/specifyweb/backend/businessrules/tests/test_gift.py
+++ b/specifyweb/backend/businessrules/tests/test_gift.py
@@ -1,4 +1,6 @@
+from decimal import Decimal
 from django.db import IntegrityError
+from django.utils import timezone
 from specifyweb.specify import models
 from specifyweb.specify.tests.test_api import ApiTests
 from ..exceptions import BusinessRuleException
@@ -29,3 +31,453 @@ def test_discipline_required(self):
             models.Gift.objects.create(
                 giftnumber='12',
                 discipline=None)
+
+    def test_create_gift_with_number_and_date(self):
+        gift_date = timezone.now()
+
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-8492-001',
+            giftdate=gift_date,
+            discipline=self.discipline,
+        )
+
+        fetched = models.Gift.objects.get(id=gift.id)
+
+        self.assertEqual(fetched.giftnumber, 'GIFT-8492-001')
+        self.assertEqual(fetched.giftdate, gift_date)
+        self.assertEqual(fetched.discipline, self.discipline)
+
+    def test_add_existing_agent_to_gift(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-AGENT-001',
+            discipline=self.discipline,
+        )
+
+        gift_agent = gift.giftagents.create(
+            agent=self.agent,
+            role='Recipient',
+            discipline=self.discipline,
+        )
+
+        fetched = models.Giftagent.objects.get(id=gift_agent.id)
+
+        self.assertEqual(fetched.gift, gift)
+        self.assertEqual(fetched.agent, self.agent)
+        self.assertEqual(fetched.role, 'Recipient')
+        self.assertEqual(fetched.discipline, self.discipline)
+
+    def test_create_new_agent_for_gift(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-NEW-AGENT-001',
+            discipline=self.discipline,
+        )
+
+        new_agent = models.Agent.objects.create(
+            agenttype=0,
+            firstname='New',
+            lastname='Gift Agent',
+            division=self.division,
+        )
+
+        gift_agent = models.Giftagent.objects.create(
+            gift=gift,
+            agent=new_agent,
+            role='Recipient',
+            discipline=self.discipline,
+        )
+
+        fetched_agent = models.Agent.objects.get(id=new_agent.id)
+        fetched_gift_agent = models.Giftagent.objects.get(id=gift_agent.id)
+
+        self.assertEqual(fetched_agent.firstname, 'New')
+        self.assertEqual(fetched_agent.lastname, 'Gift Agent')
+        self.assertEqual(fetched_agent.agenttype, 0)
+        self.assertEqual(fetched_agent.division, self.division)
+
+        self.assertEqual(fetched_gift_agent.role, 'Recipient')
+        self.assertEqual(fetched_gift_agent.gift, gift)
+        self.assertEqual(fetched_gift_agent.agent, new_agent)
+        self.assertEqual(fetched_gift_agent.discipline, self.discipline)
+
+    def test_add_shipment_with_all_fields_to_gift(self):
+        shipment_date = timezone.now()
+
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-SHIPMENT-001',
+            discipline=self.discipline,
+        )
+
+        shipment = gift.shipments.create(
+            shipmentnumber='SHIPMENT-001',
+            shipmentdate=shipment_date,
+            shipmentmethod='Courier',
+            numberofpackages=3,
+            insuredforamount='500.00',
+            weight='12.5 kg',
+            number1=Decimal('10.25'),
+            number2=Decimal('20.50'),
+            remarks='Shipment remarks',
+            text1='Shipment text one',
+            text2='Shipment text two',
+            yesno1=True,
+            yesno2=False,
+            shipper=self.agent,
+            discipline=self.discipline,
+        )
+
+        fetched = models.Shipment.objects.get(id=shipment.id)
+
+        self.assertEqual(fetched.gift, gift)
+        self.assertEqual(fetched.shipmentnumber, 'SHIPMENT-001')
+        self.assertEqual(fetched.shipmentdate, shipment_date)
+        self.assertEqual(fetched.shipmentmethod, 'Courier')
+        self.assertEqual(fetched.numberofpackages, 3)
+        self.assertEqual(fetched.insuredforamount, '500.00')
+        self.assertEqual(fetched.weight, '12.5 kg')
+        self.assertEqual(fetched.number1, Decimal('10.25'))
+        self.assertEqual(fetched.number2, Decimal('20.50'))
+        self.assertEqual(fetched.remarks, 'Shipment remarks')
+        self.assertEqual(fetched.text1, 'Shipment text one')
+        self.assertEqual(fetched.text2, 'Shipment text two')
+        self.assertIs(fetched.yesno1, True)
+        self.assertIs(fetched.yesno2, False)
+        self.assertEqual(fetched.shipper, self.agent)
+        self.assertEqual(fetched.discipline, self.discipline)
+
+    def test_add_existing_shipped_by_agent(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-SHIPPED-BY-001',
+            discipline=self.discipline,
+        )
+
+        shipment = gift.shipments.create(
+            shipmentnumber='SHIPMENT-SHIPPED-BY-001',
+            shippedby=self.agent,
+            discipline=self.discipline,
+        )
+
+        fetched = models.Shipment.objects.get(id=shipment.id)
+
+        self.assertEqual(fetched.gift, gift)
+        self.assertEqual(fetched.shippedby, self.agent)
+        self.assertEqual(
+            fetched.shipmentnumber,
+            'SHIPMENT-SHIPPED-BY-001',
+        )
+        self.assertEqual(fetched.discipline, self.discipline)
+
+    def test_add_new_shipped_by_agent(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-NEW-SHIPPED-BY-001',
+            discipline=self.discipline,
+        )
+
+        new_shipped_by = models.Agent.objects.create(
+            agenttype=0,
+            firstname='New',
+            lastname='Shipped By Agent',
+            division=self.division,
+        )
+
+        shipment = gift.shipments.create(
+            shipmentnumber='SHIPMENT-NEW-SHIPPED-BY-001',
+            shippedby=new_shipped_by,
+            discipline=self.discipline,
+        )
+
+        fetched_agent = models.Agent.objects.get(id=new_shipped_by.id)
+        fetched_shipment = models.Shipment.objects.get(id=shipment.id)
+
+        self.assertEqual(fetched_agent.firstname, 'New')
+        self.assertEqual(fetched_agent.lastname, 'Shipped By Agent')
+        self.assertEqual(fetched_agent.agenttype, 0)
+        self.assertEqual(fetched_agent.division, self.division)
+
+        self.assertEqual(fetched_shipment.gift, gift)
+        self.assertEqual(fetched_shipment.shippedby, fetched_agent)
+        self.assertEqual(
+            fetched_shipment.shipmentnumber,
+            'SHIPMENT-NEW-SHIPPED-BY-001',
+        )
+        self.assertEqual(fetched_shipment.discipline, self.discipline)
+
+    def test_add_existing_shipped_to_agent(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-SHIPPED-TO-001',
+            discipline=self.discipline,
+        )
+
+        shipment = gift.shipments.create(
+            shipmentnumber='SHIPMENT-SHIPPED-TO-001',
+            shippedto=self.agent,
+            discipline=self.discipline,
+        )
+
+        fetched = models.Shipment.objects.get(id=shipment.id)
+
+        self.assertEqual(fetched.gift, gift)
+        self.assertEqual(fetched.shippedto, self.agent)
+        self.assertEqual(
+            fetched.shipmentnumber,
+            'SHIPMENT-SHIPPED-TO-001',
+        )
+        self.assertEqual(fetched.discipline, self.discipline)
+
+    def test_add_new_shipped_to_agent(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-NEW-SHIPPED-TO-001',
+            discipline=self.discipline,
+        )
+
+        new_shipped_to = models.Agent.objects.create(
+            agenttype=0,
+            firstname='New',
+            lastname='Shipped To Agent',
+            division=self.division,
+        )
+
+        shipment = gift.shipments.create(
+            shipmentnumber='SHIPMENT-NEW-SHIPPED-TO-001',
+            shippedto=new_shipped_to,
+            discipline=self.discipline,
+        )
+
+        fetched_agent = models.Agent.objects.get(id=new_shipped_to.id)
+        fetched_shipment = models.Shipment.objects.get(id=shipment.id)
+
+        self.assertEqual(fetched_agent.firstname, 'New')
+        self.assertEqual(fetched_agent.lastname, 'Shipped To Agent')
+        self.assertEqual(fetched_agent.agenttype, 0)
+        self.assertEqual(fetched_agent.division, self.division)
+
+        self.assertEqual(fetched_shipment.gift, gift)
+        self.assertEqual(fetched_shipment.shippedto, fetched_agent)
+        self.assertEqual(
+            fetched_shipment.shipmentnumber,
+            'SHIPMENT-NEW-SHIPPED-TO-001',
+        )
+        self.assertEqual(fetched_shipment.discipline, self.discipline)
+
+    def test_add_multiple_agents_preparations_and_shipments(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-MULTIPLE-001',
+            discipline=self.discipline,
+        )
+
+        second_agent = models.Agent.objects.create(
+            agenttype=0,
+            firstname='Second',
+            lastname='Gift Agent',
+            division=self.division,
+        )
+
+        models.Giftagent.objects.create(
+            gift=gift,
+            agent=self.agent,
+            role='Recipient',
+            discipline=self.discipline,
+        )
+        models.Giftagent.objects.create(
+            gift=gift,
+            agent=second_agent,
+            role='Donor',
+            discipline=self.discipline,
+        )
+
+        self._create_prep_type()
+
+        first_preparation = self._create_prep(
+            self.collectionobjects[0],
+            None,
+            countamt=2,
+        )
+        second_preparation = self._create_prep(
+            self.collectionobjects[1],
+            None,
+            countamt=3,
+        )
+
+        models.Giftpreparation.objects.create(
+            gift=gift,
+            preparation=first_preparation,
+            quantity=1,
+            discipline=self.discipline,
+        )
+        models.Giftpreparation.objects.create(
+            gift=gift,
+            preparation=second_preparation,
+            quantity=2,
+            discipline=self.discipline,
+        )
+
+        gift.shipments.create(
+            shipmentnumber='GIFT-SHIPMENT-001',
+            discipline=self.discipline,
+        )
+        gift.shipments.create(
+            shipmentnumber='GIFT-SHIPMENT-002',
+            discipline=self.discipline,
+        )
+
+        fetched = models.Gift.objects.get(id=gift.id)
+
+        self.assertEqual(fetched.giftagents.count(), 2)
+        self.assertEqual(fetched.giftpreparations.count(), 2)
+        self.assertEqual(fetched.shipments.count(), 2)
+
+        agent_roles = dict(
+            fetched.giftagents.values_list('agent_id', 'role')
+        )
+        self.assertEqual(
+            agent_roles,
+            {
+                self.agent.id: 'Recipient',
+                second_agent.id: 'Donor',
+            },
+        )
+
+        preparation_quantities = dict(
+            fetched.giftpreparations.values_list(
+                'preparation_id',
+                'quantity',
+            )
+        )
+        self.assertEqual(
+            preparation_quantities,
+            {
+                first_preparation.id: 1,
+                second_preparation.id: 2,
+            },
+        )
+
+        shipment_numbers = set(
+            fetched.shipments.values_list(
+                'shipmentnumber',
+                flat=True,
+            )
+        )
+        self.assertEqual(
+            shipment_numbers,
+            {
+                'GIFT-SHIPMENT-001',
+                'GIFT-SHIPMENT-002',
+            },
+        )
+
+    def test_fill_remaining_gift_fields(self):
+        gift_date = timezone.now()
+        date_received = timezone.now()
+
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-REMAINING-001',
+            contents='Gift contents',
+            date1=gift_date,
+            date1precision=1,
+            datereceived=date_received,
+            integer1=1,
+            integer2=2,
+            integer3=3,
+            isfinancialresponsibility=True,
+            number1=Decimal('10.25'),
+            number2=Decimal('20.50'),
+            purposeofgift='Research',
+            receivedcomments='Received in good condition',
+            remarks='Gift remarks',
+            specialconditions='Handle with care',
+            srcgeography='USA',
+            srctaxonomy='Quercus',
+            status='Completed',
+            text1='Text one',
+            text2='Text two',
+            text3='Text three',
+            text4='Text four',
+            text5='Text five',
+            yesno1=True,
+            yesno2=False,
+            discipline=self.discipline,
+        )
+
+        fetched = models.Gift.objects.get(id=gift.id)
+
+        self.assertEqual(fetched.contents, 'Gift contents')
+        self.assertEqual(fetched.date1, gift_date)
+        self.assertEqual(fetched.date1precision, 1)
+        self.assertEqual(fetched.datereceived, date_received)
+        self.assertEqual(fetched.integer1, 1)
+        self.assertEqual(fetched.integer2, 2)
+        self.assertEqual(fetched.integer3, 3)
+        self.assertEqual(fetched.isfinancialresponsibility, True)
+        self.assertEqual(fetched.number1, Decimal('10.25'))
+        self.assertEqual(fetched.number2, Decimal('20.50'))
+        self.assertEqual(fetched.purposeofgift, 'Research')
+        self.assertEqual(fetched.receivedcomments, 'Received in good condition')
+        self.assertEqual(fetched.remarks, 'Gift remarks')
+        self.assertEqual(fetched.specialconditions, 'Handle with care')
+        self.assertEqual(fetched.srcgeography, 'USA')
+        self.assertEqual(fetched.srctaxonomy, 'Quercus')
+        self.assertEqual(fetched.status, 'Completed')
+        self.assertEqual(fetched.text1, 'Text one')
+        self.assertEqual(fetched.text2, 'Text two')
+        self.assertEqual(fetched.text3, 'Text three')
+        self.assertEqual(fetched.text4, 'Text four')
+        self.assertEqual(fetched.text5, 'Text five')
+        self.assertEqual(fetched.yesno1, True)
+        self.assertEqual(fetched.yesno2, False)
+        self.assertEqual(fetched.discipline, self.discipline)
+
+    def test_add_attachment_to_gift(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-ATTACHMENT-001',
+            discipline=self.discipline
+        )
+
+        attachment = models.Attachment.objects.create(
+            origfilename='gift_doc.pdf',
+            tableid=gift.specify_model.tableId,
+            title='Gift Document',
+        )
+
+        gift_attachment = models.Giftattachment.objects.create(
+            gift=gift,
+            attachment=attachment,
+            ordinal=0,
+        )
+
+        fetched = models.Giftattachment.objects.get(id=gift_attachment.id)
+
+        self.assertEqual(fetched.gift, gift)
+        self.assertEqual(fetched.attachment, attachment)
+        self.assertEqual(fetched.ordinal, 0)
+        self.assertEqual(fetched.attachment.origfilename, 'gift_doc.pdf')
+        self.assertEqual(fetched.attachment.tableid, gift.specify_model.tableId)
+        self.assertEqual(fetched.attachment.title, 'Gift Document')
+        self.assertEqual(fetched.gift.giftnumber, 'GIFT-ATTACHMENT-001')
+        self.assertEqual(fetched.gift.discipline, self.discipline)
+
+    def test_delete_attachment_from_gift(self):
+        gift = models.Gift.objects.create(
+            giftnumber='GIFT-ATTACHMENT-DELETE-001',
+            discipline=self.discipline,
+        )
+        attachment = models.Attachment.objects.create(
+            origfilename='gift_doc_delete.pdf',
+            tableid=gift.specify_model.tableId,
+            title='Gift Document',
+        )
+        gift_attachment = models.Giftattachment.objects.create(
+            gift=gift,
+            attachment=attachment,
+            ordinal=0,
+        )
+        attachment_id = attachment.id
+        gift_attachment_id = gift_attachment.id
+
+        gift_attachment.delete()
+
+        self.assertEqual(
+            models.Giftattachment.objects.filter(id=gift_attachment_id).count(), 0
+        )
+        self.assertEqual(
+            models.Attachment.objects.filter(id=attachment_id).count(), 0
+        )
+