diff2test v0.1.1

diff2test v0.1.1

A polished release of diff2test, a conservative zero-runtime-dependency C++20 test-impact analysis CLI for CMake/CTest projects.

Highlights

• Convention-over-configuration CLI:
  diff2test analyze .
• Changed paths are read from stdin by default.
• Optional Git composition:
  git diff --name-only HEAD~1 | diff2test analyze .
• Git is not a runtime dependency; diff2test only consumes newline-delimited changed paths.
• Conventional metadata defaults under <project-root>/build.
• --build convenience alias for --build-root.
• Fully explicit legacy CLI remains supported.
• Conservative safety behavior is unchanged:
  • 0 — SUBSET_SELECTED
  • 10 — FULL_SUITE_SELECTED
  • 11 — FULL_SUITE_REQUIRED
• Single-file runtime implementation.
• Zero third-party runtime dependencies.
• No runtime subprocess execution.
• Deterministic output and same-runner reproducible Release builds.
• Public CI covers the real CMake/CTest fixture, fallback behavior, sanitizers, subprocess audit, and reproducibility.

Supported boundary

The verified MVP targets Linux, C++20, GCC/Clang Make-style dependency files, CMake File API codemodel v2, and CTest json-v1.

Unsupported or incomplete evidence widens conservatively rather than guessing.

Release assets

• diff2test-linux-x86_64
• SHA256SUMS.txt

diff2test v0.1.0

diff2test v0.1.0

Initial public release of diff2test, a zero-runtime-dependency C++20 CLI for conservative test impact analysis on supported CMake/CTest projects.

Highlights

• Single-file runtime implementation: diff2test.cpp
• Zero third-party runtime dependencies
• Conservative affected-test selection
• Strict in-process JSON parsing
• GCC/Clang Make-style .d dependency parsing
• CMake File API codemodel v2 support
• CTest json-v1 catalogue support
• Exact executable-artifact mapping
• Explainable selection paths
• Safe fallback on incomplete, stale, ambiguous, or unsupported evidence
• Deterministic output
• Public CI integration tests
• ASan + UBSan verification
• Same-runner reproducible Release build

Verified scenarios

• include/alpha.hpp → AlphaTest
• shared feature header → AlphaTest + BetaTest
• missing dependency evidence → full known suite
• missing CTest catalogue → FULL_SUITE_REQUIRED

Hackathon bonus evidence

• Single File
• Reproducible Build
• STDLIB Log
• Package Killer comparison

See:

• README.md
• STDLIB.md
• DEPENDENCY-PROOF.md
• PACKAGE-KILLER.md
• FINAL-AUDIT.md

Supported release boundary

This release targets the verified Linux MVP using GCC/Clang Make-style dependency files, CMake File API codemodel v2, CTest JSON v1, and direct executable-to-test mapping.

Unsupported or ambiguous evidence widens safely instead of being guessed through.