Back to Repositories

Testing CORS Header Management Implementation in Alibaba Arthas

This test suite evaluates the CORS headers management functionality in the Arthas gRPC web proxy component. It focuses on validating the proper implementation of Cross-Origin Resource Sharing (CORS) header updates in HTTP responses using Netty’s HTTP components.

Test Coverage Overview

The test coverage focuses on the CorsUtils class functionality for HTTP header manipulation.

Tests the updateCorsHeader method behavior
Verifies correct CORS header application to HTTP responses
Validates integration with Netty’s HTTP response handling

Implementation Analysis

The testing approach utilizes JUnit framework for unit testing, combined with Netty’s HTTP components for response simulation. The test creates a DefaultHttpResponse instance and verifies the CORS header modification process.

Uses DefaultHttpResponse from Netty
Implements direct header manipulation testing
Employs HTTP/1.1 protocol standards

Technical Details

Testing infrastructure leverages:

JUnit 4 testing framework
Netty HTTP codec library
DefaultHttpResponse for response simulation
HTTP/1.1 protocol version
CorsUtils utility class

Best Practices Demonstrated

The test implementation showcases several testing best practices for header manipulation verification.

Isolated unit testing of utility functions
Clear test method naming
Proper HTTP response object initialization
Direct header modification verification

alibaba/arthas

labs/arthas-grpc-web-proxy/src/test/java/com/taobao/arthas/grpcweb/proxy/server/CorsUtilsTest.java

            
package com.taobao.arthas.grpcweb.proxy.server;

import com.taobao.arthas.grpcweb.proxy.CorsUtils;
import io.netty.handler.codec.http.*;
import org.junit.Test;


public class CorsUtilsTest {

    @Test
    public void test(){
        DefaultHttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
        CorsUtils.updateCorsHeader(response.headers());
        System.out.println(response.headers());
    }
}