Diffblue Testing Agent

Diffblue Testing Agent is an autonomous AI-powered tool that generates comprehensive unit tests for Java applications at scale. It orchestrates existing enterprise-approved AI coding platforms like GitHub Copilot and Claude Code to automate the entire test generation process: coverage analysis, build system fixes, test plan creation, parallelized test generation, output verification, project clean-up, and PR preparation. Unlike general AI coding agents that require constant developer babysitting, Diffblue Testing Agent achieves high line and mutation coverage (averaging 80.7% line coverage and 61.3% mutation coverage in internal benchmarks) with minimal human intervention—just point, run, and walk away. It supports Java 8, 11, 17, 21, and 25, and works in both batch mode (project-level) and task mode (within the IDE). The tool is built for enterprise environments, offering on-premises deployment options for regulated industries and outcome-based pricing where customers pay only for verified lines of coverage that compile and pass. Diffblue has been in production since 2016 and is trusted by Fortune 500 companies in financial services, insurance, and technology.