From b06d499279e9dda5cb35a1d3d583455ab2add3f7 Mon Sep 17 00:00:00 2001
From: neko <52202080+akiyamaneko@users.noreply.github.com>
Date: Mon, 28 Sep 2020 14:28:55 +0800
Subject: [PATCH] =?UTF-8?q?=E9=98=B6=E4=B9=98=E8=AE=A1=E7=AE=97=E4=BC=98?=
 =?UTF-8?q?=E5=8C=96?=
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---
 .../src/test/java/cn/hutool/core/util/NumberUtilTest.java   | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
index 13ed9740c..895caa702 100644
--- a/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
@@ -241,10 +241,16 @@ public class NumberUtilTest {
 		long factorial = NumberUtil.factorial(0);
 		Assert.assertEquals(1, factorial);
 
+		Assert.assertEquals(1L, NumberUtil.factorial(1));
+		Assert.assertEquals(1307674368000L, NumberUtil.factorial(15));
+		Assert.assertEquals(2432902008176640000L, NumberUtil.factorial(20));
+
 		factorial = NumberUtil.factorial(5, 0);
 		Assert.assertEquals(120, factorial);
 		factorial = NumberUtil.factorial(5, 1);
 		Assert.assertEquals(120, factorial);
+
+		Assert.assertEquals(2432902008176640000L, NumberUtil.factorial(20, 0));
 	}
 
 	@Test