add test

hutool-core/src/test/java/cn/hutool/core/util/HashUtilTest.java

@@ -0,0 +1,29 @@
+package cn.hutool.core.util;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class HashUtilTest {
+
+	@Test
+	public void cityHash128Test(){
+		String s="Google发布的Hash计算算法：CityHash64 与 CityHash128";
+		final long[] hash = HashUtil.cityHash128(StrUtil.utf8Bytes(s));
+		Assert.assertEquals(0x5944f1e788a18db0L, hash[0]);
+		Assert.assertEquals(0xc2f68d8b2bf4a5cfL, hash[1]);
+	}
+
+	@Test
+	public void cityHash64Test(){
+		String s="Google发布的Hash计算算法：CityHash64 与 CityHash128";
+		final long hash = HashUtil.cityHash64(StrUtil.utf8Bytes(s));
+		Assert.assertEquals(0x1d408f2bbf967e2aL, hash);
+	}
+
+	@Test
+	public void cityHash32Test(){
+		String s="Google发布的Hash计算算法：CityHash64 与 CityHash128";
+		final int hash = HashUtil.cityHash32(StrUtil.utf8Bytes(s));
+		Assert.assertEquals(0xa8944fbe, hash);
+	}
+}