update detail.

API/ROLAC.API.Tests/Services/Form990ReportServiceTests.cs

@@ -36,9 +36,9 @@ public class Form990ReportServiceTests
 
     private static Expense Exp(int min, int sub, decimal amt, string status, string? fc = null) => new()
     {
-        MinistryId = min, CategoryGroupId = 1, SubCategoryId = sub, Type = "VendorPayment",
+        MinistryId = min, Type = "VendorPayment",
         Status = status, Amount = amt, Description = "x", ExpenseDate = new DateOnly(2026, 5, 10),
-        FunctionalClass = fc,
+        Lines = { new ExpenseLine { CategoryGroupId = 1, SubCategoryId = sub, Amount = amt, FunctionalClass = fc } },
     };
 
     [Fact]
@@ -82,4 +82,31 @@ public class Form990ReportServiceTests
         var stmt = await svc.GetFunctionalExpenseStatementAsync(new DateOnly(2026, 5, 1), new DateOnly(2026, 5, 31));
         Assert.Equal(100m, stmt.GrandTotal);
     }
+
+    [Fact]
+    public async Task Statement_SplitsOneExpenseAcrossLines()
+    {
+        // One invoice with two lines of different categories must land on two different 990 lines.
+        using var db = BuildDb();
+        await SeedAsync(db);
+        db.Expenses.Add(new Expense
+        {
+            MinistryId = 2, Type = "VendorPayment", Status = "Paid", Amount = 70m,
+            Description = "mixed", ExpenseDate = new DateOnly(2026, 5, 10),
+            Lines =
+            {
+                new ExpenseLine { CategoryGroupId = 1, SubCategoryId = 1, Amount = 50m }, // sub→line 7
+                new ExpenseLine { CategoryGroupId = 1, SubCategoryId = 2, Amount = 20m }, // sub unmapped→group fallback line 24
+            },
+        });
+        await db.SaveChangesAsync();
+        var svc = new Form990ReportService(db);
+
+        var stmt = await svc.GetFunctionalExpenseStatementAsync(null, null);
+
+        Assert.Equal(50m, stmt.Rows.Single(r => r.LineCode == "7").Program);   // ministry 2 default = Program
+        Assert.Equal(20m, stmt.Rows.Single(r => r.LineCode == "24").Program);
+        Assert.Equal(70m, stmt.GrandTotal);
+        Assert.Equal(1,   stmt.UnmappedExpenseCount);                          // one unmapped line
+    }
 }