add unit test

seata-spring-autoconfigure/seata-spring-autoconfigure-client/src/test/java/org/apache/seata/spring/boot/autoconfigure/SeataClientEnvironmentPostProcessorTest.java

@@ -0,0 +1,34 @@
+/*
+ * 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.seata.spring.boot.autoconfigure;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.core.Ordered;
+
+public class SeataClientEnvironmentPostProcessorTest {
+
+    @Test
+    public void testSeataClientEnvironmentPostProcessor() {
+        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext("io.seata.spring.boot.autoconfigure.properties");
+
+        SeataClientEnvironmentPostProcessor seataClientEnvironmentPostProcessor = new SeataClientEnvironmentPostProcessor();
+        seataClientEnvironmentPostProcessor.postProcessEnvironment(applicationContext.getEnvironment(), null);
+        Assertions.assertEquals(Ordered.HIGHEST_PRECEDENCE, seataClientEnvironmentPostProcessor.getOrder());
+    }
+}