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Testing String Utility Map Key Transformations in Arthas

This test suite validates the StringUtils functionality in Arthas Spring Boot, specifically focusing on key-transformation operations in map structures. The tests verify the proper handling of dash-containing keys and their conversion to camelCase format.

Test Coverage Overview

The test suite provides comprehensive coverage of the StringUtils.removeDashKey functionality, focusing on map key transformations.

Key areas tested include:

Basic dash-to-camelCase conversion
Complex string patterns with multiple dashes
Edge cases with trailing dashes
Numeric prefix handling

Implementation Analysis

The testing approach utilizes JUnit Jupiter framework with AssertJ assertions for robust verification. The implementation follows a clear pattern of setting up test data in a HashMap, applying the transformation, and verifying multiple assertion conditions for different key formats.

Technical patterns include:

Map-based data structure manipulation
String transformation validation
Multiple assertion chains

Technical Details

Testing tools and configuration:

JUnit Jupiter for test execution
AssertJ for fluent assertions
HashMap for test data structure
StringUtils custom utility class

Best Practices Demonstrated

The test implementation showcases several testing best practices including comprehensive edge case coverage and clear test data organization. Notable practices include:

Single responsibility principle in test methods
Clear test data setup
Explicit assertion messages
Comprehensive validation of transformation rules

alibaba/arthas

arthas-spring-boot-starter/src/test/java/com/alibaba/arthas/spring/StringUtilsTest.java

            
package com.alibaba.arthas.spring;

import java.util.HashMap;
import java.util.Map;

import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;

/**
 * 
 * @author hengyunabc 2020-06-24
 *
 */
public class StringUtilsTest {
	@Test
	public void test() {

		Map<String, String> map = new HashMap<String, String>();
		map.put("telnet-port", "" + 9999);

		map.put("aaa--bbb", "fff");

		map.put("123", "123");
		map.put("123-", "123");
		map.put("123-abc", "123");

		map.put("xxx-", "xxx");

		map = StringUtils.removeDashKey(map);

		Assertions.assertThat(map).containsEntry("telnetPort", "" + 9999);

		Assertions.assertThat(map).containsEntry("aaa-Bbb", "fff");

		Assertions.assertThat(map).containsEntry("123", "123");
		Assertions.assertThat(map).containsEntry("123-", "123");
		Assertions.assertThat(map).containsEntry("123Abc", "123");
		Assertions.assertThat(map).containsEntry("xxx-", "xxx");

	}
}