Back to Repositories

Validating MessageId Parsing and Domain Handling in CAT

This test suite validates the MessageId parsing functionality in the CAT (Central Application Tracking) system, focusing on message identification and domain handling. The tests ensure proper parsing of composite message IDs containing domain, IP address, timestamp, and index information.

Test Coverage Overview

The test suite provides comprehensive coverage of MessageId parsing functionality with specific focus on:

Basic message ID parsing with standard domain formats
Complex domain name handling with multiple segments
IP address conversion between hex and decimal formats
Timestamp and index extraction from message IDs

Implementation Analysis

The testing approach utilizes JUnit’s assertion framework to validate various components of parsed MessageIds. The implementation follows a component-based testing pattern, extending ComponentTestCase for integrated testing support.

Structured test methods for individual parsing scenarios
Comprehensive assertion chains for multiple attributes
Separation of concerns between basic and domain-specific tests

Technical Details

JUnit 4 testing framework
ComponentTestCase base class for dependency injection
IOException handling for parsing operations
Hex to decimal IP address conversion validation
Timestamp verification in milliseconds

Best Practices Demonstrated

The test suite exemplifies several testing best practices including isolated test methods, clear naming conventions, and comprehensive assertion coverage. Each test method focuses on a specific aspect of MessageId parsing, with explicit validation of all relevant fields.

Systematic validation of all MessageId components
Clear test method naming and organization
Proper exception handling and testing
Comprehensive attribute verification

dianping/cat

cat-hadoop/src/test/java/org/unidal/cat/message/MessageIdTest.java

            
/*
 * Copyright (c) 2011-2018, Meituan Dianping. All Rights Reserved.
 *
 * 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.unidal.cat.message;

import java.io.IOException;

import org.junit.Assert;
import org.junit.Test;
import org.unidal.lookup.ComponentTestCase;

import com.dianping.cat.message.tree.MessageId;

public class MessageIdTest extends ComponentTestCase {
	@Test
	public void test() throws IOException {
		MessageId id = MessageId.parse("child-0a260015-403899-12345");

		Assert.assertEquals("child", id.getDomain());
		Assert.assertEquals("0a260015", id.getIpAddressInHex());
		Assert.assertEquals("10.38.0.21", id.getIpAddress());
		Assert.assertEquals(170262549, id.getIpAddressValue());
		Assert.assertEquals(403899, id.getHour());
		Assert.assertEquals(1454036400000L, id.getTimestamp());
		Assert.assertEquals(12345, id.getIndex());

	}

	@Test
	public void testDomain() throws IOException {
		MessageId id = MessageId.parse("child-child-child-0a260015-403899-12345");

		Assert.assertEquals("child-child-child", id.getDomain());
		Assert.assertEquals("0a260015", id.getIpAddressInHex());
		Assert.assertEquals("10.38.0.21", id.getIpAddress());
		Assert.assertEquals(170262549, id.getIpAddressValue());
		Assert.assertEquals(403899, id.getHour());
		Assert.assertEquals(1454036400000L, id.getTimestamp());
		Assert.assertEquals(12345, id.getIndex());
	}
}