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Changelog History
Page 1

  • v3.0.0-preview3 Changes

    October 08, 2020

    🔄 Changes compared to preview 2

    • Incorporated v2 changes up to v2.13.2
    • 🐎 Some runtime performance improvements
    • The static library compiles 20-30% faster
    • ✅ The overhead of including catch_test_macros.hpp is 25-30% smaller
    • Amalgamated, 1 .hpp + 1 .cpp, distribution is provided
    • Reporter interface has slightly changed
    • Listener base renamed
    • 📚 Rewritten contributing documentation
      • Primary development is now on devel branch
      • v3 is now the primary development version

    🚀 Changes compared to v2 releases

    Catch2 now uses statically compiled library as its distribution model.
    ✅ This also means that to get all of Catch2's functionality in a test file,
    you have to include multiple headers.

    For quick'n'dirty migration, you can replace the old #include <catch2/catch.hpp>
    with #include <catch2/catch_all.hpp>. This is a (one of) convenience
    header(s) that brings in all of headers in Catch2. By doing this,
    you should be able to migrate instantly, but at the cost of (significantly)
    increased compilation times. You should prefer piecemeal including
    ✅ headers that are actually required by your test code.

    ✅ The basic set of functionality (TEST_CASE, SECTION, REQUIRE) is in
    ✅ catch2/catch_test_macros.hpp. Matchers are in matchers subfolder,
    generators in generators subfolder, and so on.

    📚 Note that documentation has not yet been updated to account for the
    🆕 new design.

    🙋 FAQ

    • Why is Catch2 moving to separate headers?
      • The short answer is future extensibility and scalability. The long answer is complex and can be found on my blog, but at the most basic level, it is that providing single-header distribution is at odds with providing variety of useful features. When Catch2 was distributed in a single header, adding a new Matcher would cause overhead for everyone, but was useful only to a subset of users. This meant that the barrier to entry for new Matchers/Generators/etc is high in single header model, but much smaller in the new model.
    • Will Catch2 again distribute single-header version in the future?
      • No. But we do provide sqlite-style amalgamated distribution option. This means that you can download just 1 .cpp file and 1 header and place them next to your own sources. However, doing this has downsides similar to using the catch_all.hpp header.
    • Why the big breaking change caused by replacing catch.hpp with catch_all.hpp?
      • The convenience header catch_all.hpp exists for two reasons. One of them is to provide a way for quick migration from Catch2, the second one is to provide a simple way to test things with Catch2. Using it for migration has one drawback in that it is big. This means that including it will cause significant compile time drag, and so using it to migrate should be a concious decision by the user, not something they can just stumble into unknowingly.

    (Potentially) Breaking changes

    • Catch2 now uses statically compiled library as its distribution model
      • Including catch.hpp no longer works
    • ✅ ANON_TEST_CASE has been removed, use TEST_CASE with no arguments instead (#1220)
    • --list* commands no longer have non-zero return code (#1410)
    • 🚚 --list-test-names-only has been removed (#1190)
      • You should use verbosity-modifiers for --list-tests instead
    • --list* commands are now piped through the reporters
      • The top-level reporter interface provides default implementation that works just as the old one
      • XmlReporter outputs a machine-parseable XML
    • 🚚 TEST_CASE description support has been removed
      • If the second argument has text outside tags, the text will be ignored.
    • ✅ Hidden test cases are no longer included just because they don't match an exclusion tag
      • Previously, a TEST_CASE("A", "[.foo]") would be included by asking for ~[bar].
    • PredicateMatcher is no longer type erased.
      • This means that the type of the provided predicate is part of the PredicateMatcher's type
    • SectionInfo no longer contains section description as a member (#1319)
      • You can still write SECTION("ShortName", "Long and wordy description"), but the description is thrown away
      • The description type now must be a const char* or be implicitly convertible to it
    • 🚚 The [!hide] tag has been removed.
      • Use [.] or [.foo] instead.
    • Lvalues of composed matchers cannot be composed further
    • ✅ Uses of REGISTER_TEST_CASE macro need to be followed by a semicolon
      • This does not change TEST_CASE and friends in any way
    • 🚚 IStreamingReporter::IsMulti member function was removed
      • This is very unlikely to actually affect anyone, as it was default-implemented in the interface, and only used internally
    • Various classes not designed for user-extension have been made final
      • ListeningReporter is now final
      • Concrete Matchers (e.g. UnorderedEquals vector matcher) are now final
      • All Generators are now final
    • Matcher namespacing has been redone
      • Matcher types are no longer in deeply nested namespaces
      • Matcher factory functions are no longer brought into Catch namespace
      • This means that all public-facing matcher-related functionality is now in Catch::Matchers namespace
    • Defining CATCH_CONFIG_MAIN will no longer create main in that TU.
      • Link with libCatch2Main.a, or the proper CMake/pkg-config target
      • If you want to write custom main, include catch2/catch_session.hpp
    • CATCH_CONFIG_EXTERNAL_INTERFACES has been removed.
      • You should instead include the appropriate headers as needed.
    • CATCH_CONFIG_IMPL has been removed.
      • The implementation is now compiled into a static library.
    • Event Listener interface has changed
      • TestEventListenerBase was renamed to EventListenerBase
      • EventListenerBase now directly derives from IStreamingReporter, instead of deriving from StreamingReporterBase

    👌 Improvements

    • Matchers have been extended with the ability to use different signatures of match (#1307, #1553, #1554, #1843)
      • This includes having templated match member function
      • See the rewritten Matchers documentation for details
      • Catch2 currently provides some generic matchers, but there should be more before final release of v3
      • So far, IsEmpty, SizeIs, and Contains are provided.
      • At least ElementsAre and UnorderedElementsAre are planned.
    • 🐎 Some runtime performance improvements
    • Significant compilation time improvements
      • including catch_test_macros.hpp is 80% cheaper than including catch.hpp

    🛠 Fixes

    • The INFO macro no longer contains superfluous semicolon (#1456)
    • 💻 The --list* family of command line flags now return 0 on success (#1410, #1146)

    Other changes

    • CATCH_CONFIG_DISABLE_MATCHERS no longer exists.
      • If you do not want to use Matchers in a TU, do not include their header.
    • CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER no longer exists.
      • StringMaker specializations for <chrono> are always provided
    • Catch2's CMake now provides 2 targets, Catch2 and Catch2WithMain.
      • Catch2 is the statically compiled implementation by itself
      • Catch2WithMain also links in the default main
    • 📦 Catch2's pkg-config integration also provides 2 packages
      • catch2 is the statically compiled implementation by itself
      • catch2-with-main also links in the default main

  • v3.0.0-preview2 Changes

    May 14, 2020

    Catch2 now uses statically compiled library as its distribution model.
    ✅ This also means that to get all of Catch2's functionality in a test file,
    you have to include multiple headers.

    For quick'n'dirty migration, you can replace the old #include <catch2/catch.hpp>
    with #include <catch2/catch_all.hpp>. This is a (one of) convenience
    header(s) that brings in all of headers in Catch2. By doing this,
    you should be able to migrate instantly, but at the cost of (significantly)
    increased compilation times. You should prefer piecemeal including
    ✅ headers that are actually required by your test code.

    ✅ The basic set of functionality (TEST_CASE, SECTION, REQUIRE) is in
    ✅ catch2/catch_test_macros.hpp. Matchers are in matchers subfolder,
    generators in generators subfolder, and so on.

    📚 Note that documentation has not yet been updated to account for the
    🆕 new design.

    🙋 FAQ

    • Why is Catch2 moving to separate headers?
      • The short answer is future extensibility and scalability. The long answer is complex and can be found on my blog, but at the most basic level, it is that providing single-header distribution is at odds with providing variety of useful features. When Catch2 was distributed in a single header, adding a new Matcher would cause overhead for everyone, but was useful only to a subset of users. This meant that the barrier to entry for new Matchers/Generators/etc is high in single header model, but much smaller in the new model.
    • Will Catch2 again distribute single-header version in the future?
      • No. But I intend to provide sqlite-style distribution option, with 1 header and 1 "unity" .cpp file. Do note that the header will have similar problem to the catch_all.hpp header.
    • Why the big breaking change caused by replacing catch.hpp with catch_all.hpp?
      • The convenience header catch_all.hpp exists for two reasons. One of them is to provide a way for quick migration from Catch2, the second one is to provide a simple way to test things with Catch2. Using it for migration has one drawback in that it is big. This means that including it will cause significant compile time drag, and so using it to migrate should be a concious decision by the user, not something they can just stumble into unknowingly.
    • Why does CMake/pkg-config/etc report version 3.0.0?
      • Lot of tooling does not handle preview versions too well, so we have to use proper new major version. The final release will use version 3.0.1 to avoid conflicts with these preview versions.

    (Potentially) Breaking changes

    • Catch2 now uses statically compiled library as its distribution model
      • Including catch.hpp no longer works
    • ✅ ANON_TEST_CASE has been removed, use TEST_CASE with no arguments instead (#1220)
    • --list* commands no longer have non-zero return code (#1410)
    • 🚚 --list-test-names-only has been removed (#1190)
      • You should use verbosity-modifiers for --list-tests instead
    • --list* commands are now piped through the reporters
      • The top-level reporter interface provides default implementation that works just as the old one
      • XmlReporter outputs a machine-parseable XML
    • 🚚 TEST_CASE description support has been removed
      • If the second argument has text outside tags, the text will be ignored.
    • ✅ Hidden test cases are no longer included just because they don't match an exclusion tag
      • Previously, a TEST_CASE("A", "[.foo]") would be included by asking for ~[bar].
    • PredicateMatcher is no longer type erased.
      • This means that the type of the provided predicate is part of the PredicateMatcher's type
    • SectionInfo no longer contains section description as a member (#1319)
      • You can still write SECTION("ShortName", "Long and wordy description"), but the description is thrown away
      • The description type now must be a const char* or be implicitly convertible to it
    • 🚚 The [!hide] tag has been removed.
      • Use [.] or [.foo] instead.
    • Lvalues of composed matchers cannot be composed further
    • ✅ Uses of REGISTER_TEST_CASE macro need to be followed by a semicolon
      • This does not change TEST_CASE and friends in any way
    • 🚚 IStreamingReporter::IsMulti member function was removed
      • This is very unlikely to actually affect anyone, as it was default-implemented in the interface, and only used internally
    • Various classes not designed for user-extension have been made final
      • ListeningReporter is now final
      • Concrete Matchers (e.g. UnorderedEquals vector matcher) are now final
      • All Generators are now final
    • Matcher namespacing has been redone
      • Matcher types are no longer in deeply nested namespaces
      • Matcher factory functions are no longer brought into Catch namespace
      • This means that all public-facing matcher-related functionality is now in Catch::Matchers namespace
    • Defining CATCH_CONFIG_MAIN will no longer create main in that TU.
      • Link with libCatch2Main.a, or the proper CMake/pkg-config target
      • If you want to write custom main, include catch2/catch_session.hpp
    • CATCH_CONFIG_EXTERNAL_INTERFACES has been removed.
      • You should instead include the appropriate headers as needed.
    • CATCH_CONFIG_IMPL has been removed.
      • The implementation is now compiled into a static library.

    👌 Improvements

    • Matchers have been extended with the ability to use different signatures of match (#1307, #1553, #1554, #1843)
      • This includes having templated match member function
      • See the rewritten Matchers documentation for details
      • Catch2 currently provides some generic matchers, but there should be more before final release of v3
      • So far, IsEmpty, SizeIs, and Contains are provided.
      • At least ElementsAre and UnorderedElementsAre are planned.

    🛠 Fixes

    • The INFO macro no longer contains superfluous semicolon (#1456)
    • 💻 The --list* family of command line flags now return 0 on success (#1410, #1146)

    Other changes

    • CATCH_CONFIG_DISABLE_MATCHERS no longer exists.
      • If you do not want to use Matchers in a TU, do not include their header.
    • CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER no longer exists.
      • StringMaker specializations for are always provided
    • Catch2's CMake now provides 2 targets, Catch2 and Catch2WithMain.
      • Catch2 is the statically compiled implementation by itself
      • Catch2WithMain also links in the default main
    • 📦 Catch2's pkg-config integration also provides 2 packages
      • catch2 is the statically compiled implementation by itself
      • catch2-with-main also links in the default main

  • v3.0.0-preview1 Changes

    December 28, 2019

    🚀 This is a preview release for the changes in the next (v3) major version. The biggest change is that Catch2 is now primarily provided as a static library. Use Catch2Main or Catch2 CMake targets to link against it.

    (Potentially) Breaking changes

    • ✅ ANON_TEST_CASE has been removed, use TEST_CASE with no arguments instead (#1220)
    • --list* commands no longer have non-zero return code (#1410)
    • 🚚 --list-test-names-only has been removed (#1190)
      • You should use verbosity-modifiers for --list-tests instead
    • --list* commands are now piped through the reporters
      • The top-level reporter interface provides default implementation that works just as the old one
      • XmlReporter outputs a machine-parseable XML
    • 🚚 TEST_CASE description support has been removed
      • If the second argument has text outside tags, the text will be ignored.
    • ✅ Hidden test cases are no longer included just because they don't match an exclusion tag
      • Previously, a TEST_CASE("A", "[.foo]") would be included by asking for ~[bar].
    • PredicateMatcher is no longer type erased.
      • This means that the type of the provided predicate is part of the PredicateMatcher's type
    • SectionInfo no longer contains section description as a member (#1319)
      • You can still write SECTION("ShortName", "Long and wordy description"), but the description is thrown away
      • The description type now must be a const char* or implicitly convertible to it

    🛠 Fixes

    • The INFO macro no longer contains superfluous semicolon (#1456)
    • 💻 The --list* family of command line flags now return 0 on success (#1410, #1146)

  • v2.13.3 Changes

    October 31, 2020

    🛠 Fixes

    • 🛠 Fixed possible infinite loop when combining generators with section filter (-c option) (#2025)

    Miscellaneous

    • 🛠 Fixed ParseAndAddCatchTests not finding TEST_CASEs without tags (#2055, #2056)
    • ✅ ParseAndAddCatchTests supports CMP0110 policy for changing behaviour of add_test (#2057)
      • This was the shortlived change in CMake 3.18.0 that temporarily broke ParseAndAddCatchTests

  • v2.13.2 Changes

    October 07, 2020

    🚀 There are two things of importance here. The first is that after this release, I am making the v3 branch the main development branch, and will instead branch off a maintenance branch for v2.

    The other is that you should watch this video by my friend, JeanHeyd Meneide, on his experiences with the C++ community.

    👌 Improvements

    • ↪ Implemented workaround for AppleClang shadowing bug (#2030)
    • ↪ Implemented workaround for NVCC ICE (#2005, #2027)

    🛠 Fixes

    • 🛠 Fixed detection of std::uncaught_exceptions support under non-msvc platforms (#2021)
    • 🛠 Fixed the experimental stdout/stderr capture under Windows (#2013)

    Miscellaneous

    • catch_discover_tests has been improved significantly (#2023, #2039)
      • You can now specify which reporter should be used
      • You can now modify where the output will be written
      • WORKING_DIRECTORY setting is respected
    • ✅ ParseAndAddCatchTests now supports TEMPLATE_TEST_CASE macros (#2031)
    • 📚 Various documentation fixes and improvements (#2022, #2028, #2034)

  • v2.13.1 Changes

    September 07, 2020

    👌 Improvements

    • ✅ ParseAndAddCatchTests handles CMake v3.18.0 correctly (#1984)
    • 👌 Improved autodetection of std::byte (#1992)
    • ✅ Simplified implementation of templated test cases (#2007)
      • This should have a tiny positive effect on its compilation throughput

    🛠 Fixes

    • Automatic stringification of ranges handles sentinel ranges properly (#2004)

  • v2.13.0 Changes

    July 12, 2020

    👌 Improvements

    • GENERATE can now follow a SECTION at the same level of nesting (#1938)
      • The SECTION(s) before the GENERATE will not be run multiple times, the following ones will.
    • ➕ Added -D/--min-duration command line flag (#1910)
      • If a test takes longer to finish than the provided value, its name and duration will be printed.
      • This flag is overriden by setting -d/--duration.

    🛠 Fixes

    • TAPReporter no longer skips successful assertions (#1983)

  • v2.12.4 Changes

    July 05, 2020

    🚀 Yes, the only change in this release is support for MacOS on ARM.

    👌 Improvements

    • ➕ Added support for MacOS on ARM (#1971)

  • v2.12.3 Changes

    June 29, 2020

    🛠 Fixes

    • GENERATE nested in a for loop no longer creates multiple generators (#1913)
    • ✅ Fixed copy paste error breaking TEMPLATE_TEST_CASE_SIG for 6 or more arguments (#1954)
    • 🛠 Fixed potential UB when handling non-ASCII characters in CLI args (#1943)

    👌 Improvements

    • There can be multiple calls to GENERATE on a single line
    • 👌 Improved fno-except support for platforms that do not provide shims for exception-related std functions (#1950)
      • E.g. the Green Hills C++ compiler
    • ✅ XmlReporter now also reports test-case-level statistics (#1958)
      • This is done via a new element, OverallResultsCases

    Miscellaneous

    • ➕ Added .clang-format file to the repo (#1182, #1920)
    • 📄 Rewrote contributing docs
      • They should explain the different levels of testing and so on much better

  • v2.12.2 Changes

    May 25, 2020

    🛠 Fixes

    • 🛠 Fixed compilation failure if is_range ADL found deleted function (#1929)
    • 🛠 Fixed potential UB in CAPTURE if the expression contained non-ASCII characters (#1925)

    👌 Improvements

    • std::result_of is not used if std::invoke_result is available (#1934)
    • ✅ JUnit reporter writes out status attribute for tests (#1899)
    • ⚠ Suppresed clang-tidy's hicpp-vararg warning (#1921)
      • Catch2 was already suppressing the cppcoreguidelines-pro-type-vararg alias of the warning