From d3d06a1ed96033ea37b8e0d9e719ee9d7913bb3f Mon Sep 17 00:00:00 2001
From: Alan Lau <liuweiyi@cmss.chinamobile.com>
Date: Thu, 22 Aug 2019 13:44:26 +0800
Subject: [PATCH] Add simple tests for DictionaryUtil. (#3301)

---
 .../core/dictionary/DictionaryUtilTests.java  | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 apm-sniffer/apm-agent-core/src/test/java/org/apache/skywalking/apm/agent/core/dictionary/DictionaryUtilTests.java

diff --git a/apm-sniffer/apm-agent-core/src/test/java/org/apache/skywalking/apm/agent/core/dictionary/DictionaryUtilTests.java b/apm-sniffer/apm-agent-core/src/test/java/org/apache/skywalking/apm/agent/core/dictionary/DictionaryUtilTests.java
new file mode 100644
index 000000000..864288e18
--- /dev/null
+++ b/apm-sniffer/apm-agent-core/src/test/java/org/apache/skywalking/apm/agent/core/dictionary/DictionaryUtilTests.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.agent.core.dictionary;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author Alan Lau
+ */
+public class DictionaryUtilTests {
+
+    @Test
+    public void testNullValue() {
+        Assert.assertEquals(0, DictionaryUtil.nullValue());
+    }
+
+    @Test
+    public void testIsNull() {
+        Assert.assertEquals(false, DictionaryUtil.isNull(1));
+        Assert.assertEquals(true, DictionaryUtil.isNull(0));
+    }
+}