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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Unreleased

0.8.5 - 2026-04-21

Added

  • --format json CLI option for machine-readable output (#251)

Fixed

  • Add benchmark as a dependency, required for Ruby 4

0.8.4 - 2026-02-06

Fixed

Added

  • Ruby 4 support in CI

0.8.3 - 2025-11-20

Fixed

  • Normalize slash prefix in FilterSet support to work with the 'rails' profile (#244)

0.8.2 - 2025-11-15

Fixed

  • Fix NoMethodError in pretty_print for ignored multi-line branch results (#243)

0.8.1 - 2025-09-27

Fixed

  • Fix missing require in the simplecov formatter causing potential load errors if SimpleCov wasn't required first
  • Fix SimpleCov filters (#239 by @loadkpi)

0.8.0 - 2025-08-28

Added

  • Filter out files ignored by simplecov using add_filter (#234)
  • Add LF and LH parsing to LcovParser for simplecov-lcov 0.9 compatibility

Fixed

  • Fix an Undercover::Result edge case causing errors with ignored branches on uningnored lines

0.7.4 - 2025-07-13

Fixed

  • Fix fnmatch for FilterSet to support glob braces (sets) in --include-files and --exclude-files

0.7.3 - 2025-07-13

Fixed

  • Improve Options#parse with glob braces support, strip quotes properly from .undercover config files
  • Fix Result#coverage_f to support ignored branches
  • Fix error parsing JSON coverage with branch coverage disabled (#231)
  • Fixed NoMethodError and Errno::ENOENT that were occurring when coverage report doesn't exist (#232)

0.7.2 - 2025-07-07

Fixed

  • Resolved errors when .lcov files doesn't exist using --lcov CLI flag and guess_lcov_path

0.7.0 - 2025-07-03

Added

  • New native SimpleCov formatter that generates coverage data directly without requiring LCOV conversion (#223)
  • --simplecov -s CLI option to specify coverage JSON file path as an alternative to LCOV and future default (#223)
  • Improved path handling for projects running in nested subdirectories or monorepo setups (#223)

Fixed

  • :nocov: support to skip coverage analysis for specific code blocks works again after a regression in 0.6+ (#223)

0.6.6 - 2025-07-01

  • Bugfix in max_warnings_limit following (#229)

0.6.5 - 2025-07-01

Fixed

  • Improved performance for large PRs with lazy diff enumeration (#229)

0.6.4 - 2025-03-29

Fixed

  • Fix more false positives due to source file / coverage locator issues (#222)

0.6.3 - 2024-12-23

Fixed

  • Fix false positives with empty blocks/methods on a single line (#216) by @splattael.
  • Updated list of default excluded directories (added db/ and config/)

0.6.0 - 2024-12-12

Added

  • Add support for including and exluding files by glob patterns, supplied through CLI args and the configuration file (#146)

Fixed

  • Files that were changed but don't appear in the coverage report at all will now be reported as uncovered, as expected.
  • Fixed an issue where top-level methods were not being considered #135. This was caused by a bug in the tree traversal logic.
  • Fixed a bug where --compare didn't work with grafted commits as there was no merge base available (#175). Now it's possible to pass a graft commit as --compare which enables undercover to work with shallow clones.

0.5.0 - 2024-01-09

Changed

  • Drop ruby 2.x support, require ruby 3.x in gemspec
  • Dev dependency updates

0.4.7 - 2024-01-08

Fixed

0.4.6 - 2023-04-21

Added

  • #total_coverage and #total_branch_coverage in the LcovParser

Changed

  • Drop support for ruby < 2.7
  • Test coverage with both local undercover and Undercover GitHub App for demo purposes

0.4.5 - 2022-07-28

Changed

  • Update rugged dependency to < 1.6

0.4.4 - 2021-11-29

Changed

  • Dependency updates

0.4.3 - 2021-03-16

Fixed

  • Branch coverage without line coverage marked as uncovered - fix by @GCorbel

0.4.1 - 2021-03-11

Fixed

  • Fix zero-division edge case resulting in NaN from Result#coverage_f

0.4.0 - 2021-02-06

Added

Changed

  • Min Ruby requirement bumped to 2.5.0
  • Dependency updates: Rubocop 1.0 and Rugged 1.1.0

0.3.4 - 2020-04-05

Changed

  • Updated parsing performance by scoping all_results to git diff
  • Dependecy updates

0.3.3 - 2019-12-29

Fixed

  • .gemspec requires imagen >= 0.1.8 to address compatibility issues

0.3.2 - 2019-05-08

Fixed

  • LCOV parser fix for incorrect file path handling by @RepoCorp

0.3.1 - 2019-03-19

Changed

  • Compatibility with pronto > 0.9 and rainbow > 2.1

0.3.0 - 2019-01-05

Added

  • Support for .undercover config file by @cgeorgii

0.2.3 - 2018-12-26

Fixed

  • --ruby-syntax typo fix by @cgeorgii

Changed

  • travis.yml update by @Bajena

0.2.2 - 2018-12-16

Fixed

  • Change stale_coverage error into a warning

0.2.1 - 2018-09-26

Fixed

  • Bug in mapping changed lines to coverage results

0.2.0 - 2018-08-19

Added

  • This CHANGELOG.md
  • Ruby syntax version customisable with -r or --ruby-syntax

Fixed

  • Relative and absolute project path support
  • typo in stale coverage warning message by @ilyakorol

0.1.7 - 2018-08-03

Changed

  • Readme updates by @westonganger.

Fixed

  • Handled invalid UTF-8 encoding errors from parser

0.1.6 - 2018-07-10

Fixed

  • Updated imagen to 0.1.3 which avoids a broken release of parser

0.1.5 - 2018-06-25

Changed

  • Avoided conflicts between rainbow and pronto versions for use in upcoming pronto-undercover gem

0.1.4 - 2018-05-20

Fixed

  • Quick fix 🤷‍♂️

0.1.3 - 2018-05-20

Added

  • imagen version bump adding block syntax support

0.1.2 - 2018-05-18

Fixed

  • --version cli option fix

0.1.1 - 2018-05-17

Fixed

  • CLI exit codes on success error

[0.1.0] - 2018-05-10

Added

  • First release of undercover 🎉