Pop!x – Test Coverage, Mutation Analysis & JMH Benchmarks

This page documents the evolution of test quality metrics and performance characteristics for the Pop!x project.

JaCoCo & PiTest — Code Coverage and Mutation Testing Reports

JaCoCo – Code Coverage Evolution

Code coverage reports are generated using JaCoCo and illustrate how coverage evolves as different testing strategies are introduced (unit and integration testing).

Baseline coverage – Initial state before testing activities
After unit tests – Coverage after unit-level testing (model and service layers)
After integration tests – Coverage including presentation and persistence flows
Final coverage – Consolidated project coverage

PiTest – Mutation Testing Campaign

Mutation testing was conducted using PiTest to evaluate the effectiveness of the unit test suite in detecting injected faults. Due to its computational cost, mutation analysis was executed as a dedicated campaign rather than as part of the continuous integration pipeline.

Baseline mutation analysis – Initial mutation testing campaign
Final mutation analysis – Consolidated mutation testing results after test evaluation

JMH – Microbenchmark Results CSV-backed

Cart Subtotal Calculation

Comparison between a traditional for loop and Java Streams for subtotal computation over different cart sizes.
CSV: carrello-subtotal.csv