junit test

@@ -62,4 +62,10 @@ public class SellerEnterTypeChangeEventTest extends BaseWebTest {
         BigDecimal feeRate = sellerPlatformServiceFeeSupport.getPlatformServiceFeeRate(500031424, SkupType.IN_STOCK);
         Assert.assertEquals(feeRate.toPlainString(),"0.049");
     }
+
+    @Test
+    public void getPlatformServiceFeeRate_withoutRules() {
+        BigDecimal feeRate = sellerPlatformServiceFeeSupport.getPlatformServiceFeeRate(500031424, SkupType.IN_STOCK);
+        Assert.assertEquals(feeRate,null);
+    }
 }