From 47842da7b93e96f276004322cd23cbac95427621 Mon Sep 17 00:00:00 2001
From: Daniel Roth <daniel_roth@hotmail.co.uk>
Date: Fri, 3 Jul 2026 08:27:22 +0000
Subject: [PATCH] =?UTF-8?q?Abri=20tenant=20data=20fetch=20requires=20a=20p?=
 =?UTF-8?q?arseable=20new=20commencement=20date=20=F0=9F=9F=A5?=
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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 etl/hubspot/tests/test_hubspot_deal_differ.py | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/etl/hubspot/tests/test_hubspot_deal_differ.py b/etl/hubspot/tests/test_hubspot_deal_differ.py
index a241c5189..0a5e96e9b 100644
--- a/etl/hubspot/tests/test_hubspot_deal_differ.py
+++ b/etl/hubspot/tests/test_hubspot_deal_differ.py
@@ -772,6 +772,42 @@ def test_abri_tenant_data_fetch__commencement_date_already_set__returns_false()
     assert result is False
 
 
+@pytest.mark.parametrize(
+    "new_overrides",
+    [
+        {},
+        {"expected_commencement_date": ""},
+        {"expected_commencement_date": "not-a-date"},
+    ],
+)
+def test_abri_tenant_data_fetch__no_parseable_new_commencement_date__returns_false(
+    new_overrides: Dict[str, str],
+) -> None:
+    deal_id = uuid.uuid4()
+
+    # Arrange
+    old_deal = make_old_deal(
+        id=deal_id,
+        project_code="Abri Condition",
+        expected_commencement_date=None,
+    )
+    new_deal = make_new_deal(
+        deal_id,
+        project_code="Abri Condition",
+        **new_overrides,
+    )
+
+    # Act
+    result = HubspotDealDiffer.check_for_abri_tenant_data_fetch(
+        new_deal=new_deal,
+        new_project=None,
+        old_deal=old_deal,
+    )
+
+    # Assert
+    assert result is False
+
+
 # =======================
 # DB UPDATE TRIGGER TESTS
 # =======================