Expect bound logs in time unit history test

backend/src/api-tests/timeUnit/timeUnitsFetch.test.ts

@@ -45,7 +45,16 @@ describe('GET /time-unit endpoints', () => {
         time_update_id: number
         tuid: number | null
         lower_buid: number | null
-        lower_bound_update: { buid: number; updates: unknown[] } | null
+        lower_bound_update: {
+          buid: number
+          updates: Array<{
+            buid: number | null
+            table_name: string | null
+            column_name: string | null
+            old_data: string | null
+            new_data: string | null
+          }>
+        } | null
       }>
     }>('time-unit/langhian', 'GET')
 
@@ -58,7 +67,24 @@ describe('GET /time-unit endpoints', () => {
       lower_buid: 403,
       lower_bound_update: { buid: 403 },
     })
-    expect(lowerBoundSummary?.lower_bound_update?.updates).toEqual([])
+    expect(lowerBoundSummary?.lower_bound_update?.updates).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          buid: 403,
+          table_name: 'now_tu_bound',
+          column_name: 'b_name',
+          old_data: 'Lan/Srv',
+          new_data: 'Langhian/Serravallian',
+        }),
+        expect.objectContaining({
+          buid: 403,
+          table_name: 'now_tu_bound',
+          column_name: 'age',
+          old_data: '14.8',
+          new_data: '13.82',
+        }),
+      ])
+    )
   })
 
   it('handles unexpected failures gracefully', async () => {