test: Add test case for LogMessage #1331

infra/common/src/test/java/cn/hippo4j/common/toolkit/logtracing/LogMessageTest.java

@@ -0,0 +1,93 @@
+/*
+ * 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 cn.hippo4j.common.toolkit.logtracing;
+
+import org.apache.logging.log4j.util.Strings;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNotSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class LogMessageTest {
+
+    private final static String MESSAGE = "message";
+    private final static String THROWABLE_MESSAGE = "throwable message";
+
+    private LogMessage logMessage;
+
+    @BeforeEach
+    public void init() {
+        logMessage = LogMessage.getInstance();
+    }
+
+    @Test
+    void getInstance_shouldReturnANewLogMessageInstance() {
+        final LogMessage newInstance = LogMessage.getInstance();
+        assertNotNull(newInstance);
+        assertNotSame(logMessage, newInstance);
+    }
+
+    @Test
+    void getInstance_shouldHaveAnEmptyMessage() {
+        assertEquals(Strings.EMPTY, logMessage.toString());
+    }
+
+    @Test
+    void setMsg_shouldSetAnewMessageInLogMessage() {
+        logMessage.setMsg(MESSAGE);
+        assertEquals(MESSAGE, logMessage.toString());
+    }
+
+    @Test
+    void msg_shouldContainsMessageAndThrowableMessage() {
+        final String message = logMessage.msg(MESSAGE, new Throwable(THROWABLE_MESSAGE));
+        assertNotNull(message);
+        assertTrue(message.contains(MESSAGE));
+        assertTrue(message.contains(THROWABLE_MESSAGE));
+    }
+
+    @Test
+    void toString_shouldPrintKeyAndValueWhenSet() {
+        logMessage.kv("key", "value");
+        assertEquals("key=value", logMessage.toString());
+    }
+
+    @Test
+    void toString_shouldPrintAllKeyAndValuePairs() {
+        logMessage.kv("key1", "value1");
+        logMessage.kv("key2", "value2");
+        assertEquals("key1=value1||key2=value2", logMessage.toString());
+    }
+
+    @Test
+    void toString_shouldPrintMessageAndAllKeyAndValuePairs() {
+        logMessage.setMsg(MESSAGE);
+        logMessage.kv("key1", "value1");
+        logMessage.kv("key2", "value2");
+        assertEquals("messagekey1=value1||key2=value2", logMessage.toString());
+    }
+
+    @Test
+    void kv2String_shouldPrintMessageAndAllKeyAndValuePairs() {
+        String result = logMessage.kv2String("key", "value");
+        assertEquals("key=value", result);
+    }
+}