add Luhn

hutool-core/src/test/java/org/dromara/hutool/core/codec/LuhnTest.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2024. looly(loolly@aliyun.com)
+ * Hutool is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *          https://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+package org.dromara.hutool.core.codec;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class LuhnTest {
+	@Test
+	void checkTest() {
+		assertTrue(Luhn.check("6225760008219524"));
+
+		assertFalse(Luhn.check("123456"));
+		assertFalse(Luhn.check(""));
+		assertFalse(Luhn.check("abc"));
+		assertFalse(Luhn.check("622576000821952a"));
+	}
+}