55 lines
1.9 KiB
Java
55 lines
1.9 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.gossip.crdt;
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import org.junit.Assert;
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import org.junit.Test;
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import java.util.HashMap;
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import java.util.Map;
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public class GrowOnlyCounterTest {
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@Test
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public void mergeTest() {
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Map<String, Long> node1Counter = new HashMap<>();
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node1Counter.put("1", 3L);
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Map<String, Long> node2Counter = new HashMap<>();
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node2Counter.put("2", 1L);
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Map<String, Long> node3Counter = new HashMap<>();
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node3Counter.put("3", 2L);
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GrowOnlyCounter gCounter1 = new GrowOnlyCounter(node1Counter);
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GrowOnlyCounter gCounter2 = new GrowOnlyCounter(node2Counter);
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GrowOnlyCounter gCounter3 = new GrowOnlyCounter(node3Counter);
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// After node 2 receive from node 1
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gCounter2 = gCounter2.merge(gCounter1);
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Assert.assertEquals(4, (long) gCounter2.value());
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// After node 3 receive from node 1
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gCounter3 = gCounter3.merge(gCounter1);
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Assert.assertEquals(5, (long) gCounter3.value());
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// After node 3 receive from node 2
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gCounter3 = gCounter3.merge(gCounter2);
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Assert.assertEquals(6, (long) gCounter3.value());
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}
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}
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