FunTester’s Journey: Building a Java‑Based API Testing Framework and Performance Testing Solutions

FunTester, a self‑described "nuclear‑bomb tester," recounts two years of server‑side testing experience using Java and Groovy, describing a custom testing framework built on HttpClient 4.5 that includes MySQL data storage, HTML reports, and alert‑over notifications.

API Testing

Common pitfalls and solutions for functional and automated API testing are presented, along with a curated list of practical articles.

Using Spring Boot + MyBatis for Database Service

Java HttpClient Implementation of AlertOver Push API

Generic Validation Class for API Automation

Automatically Convert Swagger Documentation into Test Code

HttpClient Handling of Multiple Simultaneous Users

HttpClient Example for Turing Robot Web API Call

Using Groovy with Java API Testing Framework to Send HTTP Requests

HttpClient Call to JD Wanxiang Digital Marketing News API Example

Solution for HttpClient Socket Closed Issue

Ensuring Resource Release in HttpClient 4.5

Handling 302 Redirects with HttpClient

Exploring a Linear Java API Testing Framework

Sending Failure Notification via AlertOver

Cause of Socket Closed Error When Parsing Entity with EntityUtils

Configuring Retry Controller in HttpClient API Testing

Appending Parameters to GET Requests

Encapsulating HttpClient File Upload Method

Example of Batch File Upload via API

Sending HTTPS Requests with HttpClient and Resolving SSLHandshakeException

API Performance

Performance testing strategies and Groovy script implementations are discussed, along with tools such as Timewatch and a Chinese‑localized Netdata.

Chinese Localization of Netdata Linux Performance Monitoring

Timewatch: A Timer Helper for Performance Testing

Performance Testing Framework

Conducting Performance Testing Comfortably on Linux CLI

High Concurrency Configuration Example for HttpClient on macOS

Single Sign‑On Performance Testing Solution

Load Testing a Single‑Row Multiple‑Update API

Performance Testing of Message Queues

Load Testing the Password‑Change API

Load Testing a Multi‑Row Single‑Update API

Testing Solutions

Designs for specific test scenarios are presented, covering both functional and performance aspects.

Performance Testing of Message Queues

Load Testing the Password‑Change API

Testing Probabilistic Business APIs

Testing Non‑Fixed Probabilistic Algorithm P = p(1+0.1*N)