test(dashboard): sla line on ticket trend plots a percentage

helpdesk/tests/api/test_dashboard.py

@@ -39,6 +39,26 @@ class TestSlaFulfilledCard(IntegrationTestCase):
         card = self.get_sla_card()
         self.assertEqual(card["value"], 100)
 
+    def test_trend_plots_sla_fulfilled_as_percentage(self):
+        yesterday = add_days(now_datetime(), -1)
+        for subject, agreement_status in (
+            ("Answered in time", "Fulfilled"),
+            ("Answered late", "Failed"),
+        ):
+            ticket = self.make_assigned_ticket(subject, status="Closed")
+            frappe.db.set_value(
+                "HD Ticket",
+                ticket.name,
+                {"creation": yesterday, "agreement_status": agreement_status},
+            )
+
+        filters = frappe._dict(
+            from_date=add_days(nowdate(), -2), to_date=nowdate(), agent=AGENT
+        )
+        trend = HelpdeskDashboard(filters).get_ticket_trend_data()["data"]
+        day = next(row for row in trend if row["date"] == getdate(yesterday))
+        self.assertEqual(day["SLA Fulfilled"], 50)
+
     def make_assigned_ticket(self, subject: str, status: str | None = None):
         """A ticket that has been responded to, scoped to this test's agent."""
         ticket = make_ticket(subject=subject)