add unitTest (#2921)

src/test/java/com/actiontech/dble/route/function/PartitionByJumpConsistentHashTest.java

@@ -0,0 +1,35 @@
+/*
+* Copyright (C) 2016-2019 ActionTech.
+* based on code by MyCATCopyrightHolder Copyright (c) 2013, OpenCloudDB/MyCAT.
+* License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
+*/
+package com.actiontech.dble.route.function;
+
+
+import org.junit.Assert;
+import org.junit.Test;
+
+
+public class PartitionByJumpConsistentHashTest {
+
+    @Test
+    public void test1() {
+        PartitionByJumpConsistentHash partition = new PartitionByJumpConsistentHash();
+        partition.setHashSlice("0:0");
+        partition.setPartitionCount(5);
+        partition.init();
+        Assert.assertEquals(1, (int) partition.calculate("8"));
+        Assert.assertEquals(4, (int) partition.calculate("5"));
+    }
+
+    @Test
+    public void test2() {
+        PartitionByJumpConsistentHash partition = new PartitionByJumpConsistentHash();
+        partition.setHashSlice("0:0");
+        partition.setPartitionCount(4);
+        partition.init();
+        Assert.assertEquals(1, (int) partition.calculate("8"));
+        Assert.assertEquals(0, (int) partition.calculate("5"));
+    }
+
+}