CHANGELOG.md

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.

Please make sure to add your changes to the appropriate categories:

• Added: for new functionality
• Changed: for changes in existing functionality
• Deprecated: for soon-to-be removed functionality
• Removed: for removed functionality
• Fixed: for fixed bugs
• Performance: for performance-relevant changes
• Security: for security-relevant changes
• Other: for everything else

[Unreleased]

Added

• n/a

Changed

• Bumped MSRV from “1.88.0” to “1.91.0”.
• Updated dependencies:
  • cargo_toml from 0.22.0 to 1.0.0

Deprecated

• n/a

Removed

• n/a

Fixed

• n/a

Performance

• n/a

Security

• n/a

Other

• n/a

[0.13.0] - 2025-12-15

Added

• Added filter_stdout() and filter_stderr() methods for regex-based output filtering

Changed

• Bumped MSRV from 1.86.0 to 1.88.0.

[0.12.1] - 2025-10-07

Changed

• Updated dependencies:
  • cargo_metadata from 0.22.0 to 0.23.0

[0.12.0] - 2025-09-12

Changed

• Updated dependencies:
  • cargo_metadata from 0.20.0 to 0.22.0
• Bumped MSRV from 1.82.0 to 1.86.0.

[0.11.0] - 2025-06-25

Changed

• Updated dependencies:
  • cargo_metadata from 0.19.2 to 0.20.0
• Bumped MSRV from 1.78.0 to 1.82.0.

[0.10.0] - 2025-05-10

Added

• Added support for Rust edition "2024"

Changed

• Updated dependencies:
  • thiserror from 1.0.58 to 2.0.0
  • cargo_metadata from 0.18.1 to 0.19.2
  • cargo_toml from 0.20.0 to 0.22.0

[0.9.2] - 2024-11-02

Added

• Re-introduced overriding of CARGO_TARGET_DIR, but using parent crate's CARGO_TARGET_DIR.

Fixed

• Fixed a bug (by no longer passing --tests to cargo check) that would sometimes cause errors of individual files to get wrongly reported all bundled together.

Performance

• Reversed the minor performance regression introduced in 0.9.1.

[0.9.1] - 2024-11-01

Added

• Added TRYEXPAND_DEBUG_LOG CLI option for turning on debug logging (use with -- --nocapture for optimal results).

Changed

• Stopped overriding CARGO_TARGET_DIR (you can still opt-in via .env("CARGO_TARGET_DIR", "…")) (see ###Fixed).

Deprecated

• n/a

Removed

• n/a

Fixed

• Fixed a bug (by no longer overriding CARGO_TARGET_DIR) that would sometimes cause errors of individual files to get wrongly reported all bundled together.

Performance

• Due to no longer using the same CARGO_TARGET_DIR for all tests (even across test groups) there may be some (hopefully minor) performance regressions for some projects.

[0.9.0] - 2024-11-01

Added

• Added struct BuildTestSuite.
• Added struct ExpandTestSuite.
• Added fn check(…) -> BuildTestSuite crate-level function.
• Added fn run(…) -> BuildTestSuite crate-level function.
• Added fn run_tests(…) -> BuildTestSuite crate-level function.

Changed

• Changed return type of fn expand(…) crate-level function from -> TestSuite to -> ExpandTestSuite.
• Updated dependencies:
  • regex from 1.10.3 to 1.11.1

Removed

• Removed struct TestSuite (by marking it as pub(crate)).

[0.8.4] - 2024-05-24

Added

• Added TRYEXPAND_TRUNCATE_OUTPUT CLI option for turning off truncation of console output.

[0.8.3] - 2024-05-05

Changed

• Have cargo check/run/test always run without terminal colors (i.e. --color "never").

Fixed

• Fixed bug that would write stdout's output to snapshot file with '.err.txt' extension instead of '.out.txt'.

[0.8.2] - 2024-05-05

Changed

• Updated dependencies:
  • cargo_toml from 0.19.2 to 0.20.0
• Changed location of generated test project's cargo config file from './.cargo/config' to './.cargo/config.toml'.

Changed

[0.8.1] - 2024-03-21

• Updated dependencies:
  • yansi from 0.5.1 to 1.0.1
  • cargo_toml from 0.19.1 to 0.19.2
  • thiserror from 1.0.57 to 1.0.58

[0.8.0] - 2024-02-28

Changed

• Updated dependencies:
  • cargo_toml from 0.18.0 to 0.19.1
  • serde from 1.0.195 to 1.0.197
  • thiserror from 1.0.56 to 1.0.57
• Bumped MSRV from 1.70.0 to 1.74.0.

Fixed

• Fixed redundant logging of expanded code as both, "EXPANDED:" and "OUTPUT:".

[0.7.1] - 2024-01-26

Changed

• Restricted logging of snapshot blocks to 100 lines per block.

Fixed

• Fixed bug where unexpected failure was getting reported, but no actual error included in the log.

[0.7.0] - 2024-01-22

Added

• Added support for running test files (i.e. cargo run).
• Added support for testing test files (i.e. cargo test).
• Added struct TestSuite
  • with .arg()/.args() builder-style methods for providing args.
  • with .env()/.envs() builder-style methods for providing envs.
  • with .skip_overwrite() builder-style method for suppressing snapshot writing.
  • with .and_check() builder-style method for running cargo check for successful expansions.
  • with .and_run_tests() builder-style method for running cargo test for successful expansions.
  • with .and_run() builder-style method for running cargo run for successful expansions.
  • with .expect_pass()/.expect_fail() builder-style methods for asserting passes/failures.

Changed

• Changed visibility of crate::Options to pub(crate)

Removed

• fn expand_fail()
• fn expand_opts()
• fn expand_opts_fail()
• fn expand_checking_fail()
• fn expand_opts_checking()
• fn expand_opts_checking_fail()

[0.6.0] - 2024-01-16

Added

• Added support for checking (i.e. cargo check) successful expansions via expand_checking() and expand_opts_checking().
• Added field skip_overwrite: bool to Options for selectively suppressing snapshots.

Changed

• Updated dependencies:
  • serde from 1.0.105 to 1.0.194
• Changed file extensions:
  • from .expand.out.rs to .out.rs
  • from .expand.err.txt to .err.txt

Fixed

• External dependencies of the crate are now properly mirrored by the test projects.
• Features of the crate are now properly mirrored by the test projects.

[0.5.0] - 2024-01-15

Changed

• Passing no file patterns is now considered a failure:
  • Calling expand() with an empty list of file patterns will fail.
  • Calling expand_opts() with an empty list of file patterns will fail.
  • Calling expand_fail() with an empty list of file patterns will fail.
  • Calling expand_opts_fail() with an empty list of file patterns will fail.
• Passing file patterns that match no files is now considered a failure:
  • Calling expand() with a file pattern that matches no files will fail.
  • Calling expand_opts() with a file pattern that matches no files will fail.
  • Calling expand_fail() with a file pattern that matches no files will fail.
  • Calling expand_opts_fail() with a file pattern that matches no files will fail.

[0.4.0] - 2024-01-15

Added

• Added cargo_metadata = "0.18.1" crate dependency.
• Added support for (virtual/non-virtual) workspaces.

Changed

• Changed file extension from .expanded.rs to .expand.out.rs (to match the expand command, so we can add others in the future).
• Cargo metadata now gets read via cargo_metadata which is more robust than cargo_toml.

Other

• Improved error messages.

[0.3.0] - 2024-01-13

Added

• Added Options type.
• Added expand_opts() & expand_opts_fail() (replacing expand_args() & expand_args_fail()).

Removed

• Removed expand_args() & expand_args_fail() (in favor of expand_opts() & expand_opts_fail()).

Fixed

• Named errors (i.e. error[E…]: …) are now properly detected and included in error snapshots.
• Generated .extended.rs files obtained from failures no longer include Rust prelude, etc.
• No longer crashes when encountering an unexpectedly empty stdout/stderr, but reports an error instead.
• No longer reports updated snapshots for snapshots that were overwritten, but actually unchanged.

Performance

• Tests now properly share a single target directory, speeding up compilation times.

[0.2.0] - 2024-01-12

Changed

• On failure two snapshots are now getting generated:
  • the output from stdout gets saved to a .expanded.rs file
  • the output from stderr gets saved to a .error.txt file

Removed

• Removed scopeguard crate from project's dependencies
• Removed serde_json crate from project's dependencies

[0.1.0] - 2024-01-12

Initial release.