better end points and better tests

tests/internal/testutil/testutil.go

@@ -131,3 +131,38 @@ func DecodeJSON(t *testing.T, w *httptest.ResponseRecorder, dst any) {
 		t.Fatalf("DecodeJSON: %v\n\tbody: %s", err, w.Body.String())
 	}
 }
+
+// SeedFixtures inserts one department and one GL account into db and returns
+// their IDs. Call this at the top of any test that needs FK-valid actuals or
+// budget rows.
+//
+// Usage:
+//
+//	deptID, glID := testutil.SeedFixtures(t, db)
+func SeedFixtures(t *testing.T, db *sql.DB) (deptID int, glAccountID int) {
+	t.Helper()
+
+	res, err := db.Exec(`
+        INSERT INTO departments (code, name, cost_center, active)
+        VALUES ('TEST', 'Test Department', 'CC-TEST', 1)
+        ON CONFLICT(code) DO UPDATE SET name = excluded.name
+    `)
+	if err != nil {
+		t.Fatalf("SeedFixtures: insert department: %v", err)
+	}
+	id, _ := res.LastInsertId()
+	deptID = int(id)
+
+	res, err = db.Exec(`
+        INSERT INTO gl_accounts (code, description, type, favour_high, active)
+        VALUES ('TEST', 'Test Revenue', 'revenue', 1, 1)
+        ON CONFLICT(code) DO UPDATE SET description = excluded.description
+    `)
+	if err != nil {
+		t.Fatalf("SeedFixtures: insert gl_account: %v", err)
+	}
+	id, _ = res.LastInsertId()
+	glAccountID = int(id)
+
+	return deptID, glAccountID
+}