7e:I[154500,[["$2",["$3","$4"],[14451,1389]],["$5",["$6","$7","$8","$9","$a","$b"],[40076,28925,10525,30632,7744,72054]]],"IconMark"] 78:Tccc,Closes #1810 ## Description Test discovery runs the test executable in a separate process, which does not inherit anything set through `PROPERTIES ENVIRONMENT` — those are applied by CTest to the tests themselves, not to the listing run. An executable that needs a particular environment just to start up and list its test cases therefore fails at discovery time, even though the tests would run fine. The cases reported in #1810 are a missing shared library search path, a Qt platform plugin needing `offscreen` on a headless machine, and an instrumentation library whose extra output corrupts the JSON listing. `DL_PATHS` already solves this for dynamic linker search paths specifically, and its documented behaviour ("set when retrieving the list of test cases ... and when the tests are executed") is exactly the semantic people want here. This adds `DISCOVERY_ENVIRONMENT` for arbitrary `=` pairs. ```cmake catch_discover_tests(tests DISCOVERY_ENVIRONMENT QT_QPA_PLATFORM=offscreen) ``` ### Scope decision The option applies to discovery only, not to test execution. Every case in the issue is discovery-side — the tests themselves already ran correctly via `PROPERTIES ENVIRONMENT`. Making it discovery-scoped keeps the naming unambiguous and changes no existing behaviour. Happy to widen it to cover both if you would rather it mirror `DL_PATHS` exactly. ### Restoring the previous environment The variables are applied only for the duration of discovery and previous values are restored afterwards, including unsetting variables that were not previously defined. This matters in `PRE_TEST` mode, where `catch_discover_tests_impl` runs inside the CTest process — without the restore the variables would leak into the tests' environment, which is the opposite of what the option promises. The saved values are kept in per-variable CMake variables rather than parallel lists, because an environment variable can be unset or hold an empty string and CMake lists cannot represent those two cases distinctly. ## Testing Added `CMakeHelper::DiscoveryEnvironment`, a pure-CMake unit test alongside the existing `TestPrepareCommandFragment` / `TestDecomposeJsonArray` ones. It drives `catch_discover_tests_impl` against a fake listing executable that reports a sentinel environment variable back through the test name, and asserts: - the sentinel is unset when the option is not given - the value reaches the listing process when it is - the variable does not leak past discovery - a pre-existing value is overridden during discovery - a pre-existing value is restored afterwards The fake executable is a `cmake -P` script rather than a shell script, so the test runs unchanged on Windows. All five assertions pass locally, and the two existing CMake helper tests still pass. Note that I ran these via `cmake -P` directly; I have not built the full test suite, so the wider CI run is the first check of the `tests/CMakeLists.txt` registration. Worth flagging: `DL_PATHS` and `DL_FRAMEWORK_PATHS` are documented in the `Catch.cmake` header comment but missing from the option list in `docs/cmake-integration.md`. I only added the new option there rather than fix that separately — happy to do so in another PR if useful. 79:T624,## [Codecov](https://app.codecov.io/gh/catchorg/Catch2/pull/3200?dropdown=coverage&src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=catchorg) Report :white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 91.21%. Comparing base ([`897d804`](https://app.codecov.io/gh/catchorg/Catch2/commit/897d8043eb192d0fc361c6339ce13e1cabe481c4?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=catchorg)) to head ([`7732946`](https://app.codecov.io/gh/catchorg/Catch2/commit/7732946358138878724ba626ddca1e8bc21730d6?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=catchorg)). Additional details and impacted files ```diff @@ Coverage Diff @@ ## devel #3200 +/- ## ========================================== + Coverage 91.17% 91.21% +0.03% ========================================== Files 206 206 Lines 9031 9031 ========================================== + Hits 8234 8237 +3 + Misses 797 794 -3 ``` :rocket: New features to boost your workflow: - :snowflake: [Test Analytics](https://docs.codecov.com/docs/test-analytics): Detect flaky tests, report on failures, and find test suite problems. 7a:T48a,Add DISCOVERY_ENVIRONMENT option to catch_discover_tests Test discovery runs the test executable in a separate process that does not inherit anything set through `PROPERTIES ENVIRONMENT`, since those properties are applied by CTest to the tests themselves. An executable that needs a particular environment merely to start up and list its test cases therefore fails at discovery time, even though the tests would run correctly. Reported cases include a missing shared library search path, a Qt platform plugin that has to be set to `offscreen` on a headless machine, and an instrumentation library whose extra output corrupts the JSON listing. `DL_PATHS` already solves this for the specific case of dynamic linker search paths. This adds `DISCOVERY_ENVIRONMENT`, which does the same for arbitrary `=` pairs. The variables are applied only for the duration of discovery, and any previous values are restored afterwards. That restore matters in PRE_TEST mode, where discovery runs inside the CTest process, and without it the variables would leak into the environment of the tests - which is explicitly not what the option promises. Closes #1810 7b:Ta08,### 🟡 Changes recommended The DISCOVERY_ENVIRONMENT save/restore logic can restore incorrect values when the same variable is specified multiple times, and the new helper test currently depends on the caller’s ambient environment (potential flakiness). *Once you've addressed the issues Copilot identified, you can request another Copilot review.* Pull request overview Adds a CMake-facing way to inject environment variables specifically for Catch2 test *discovery* (the `--list-tests` run), addressing cases where the test executable needs a special environment just to start and emit JSON. **Changes:** - Adds `DISCOVERY_ENVIRONMENT =...` to `catch_discover_tests` and threads it through to `catch_discover_tests_impl`. - Implements temporary environment application + restoration around the discovery run in `CatchAddTests.cmake`. - Adds a pure-CMake helper test (and a fake listing “executable”) plus documentation updates for the new option. File summaries | File | Description | | ---- | ----------- | | `extras/Catch.cmake` | Adds the public `DISCOVERY_ENVIRONMENT` option and forwards it into the discovery script for POST_BUILD and PRE_TEST modes. | | `extras/CatchAddTests.cmake` | Applies `TEST_DISCOVERY_ENVIRONMENT` during discovery and restores environment afterward. | | `docs/cmake-integration.md` | Documents the new option, its scope (discovery-only), and provides usage examples. | | `tests/CMakeLists.txt` | Registers the new CMake helper test. | | `tests/TestScripts/DiscoverTests/TestDiscoveryEnvironment.cmake` | Adds a unit test verifying propagation and non-leak/restoration semantics. | | `tests/TestScripts/DiscoverTests/FakeListingExecutable.cmake` | Adds a fake listing script used by the new helper test to reflect environment state in the discovered test name. | Review details - **Files reviewed:** 6/6 changed files - **Comments generated:** 3 - **Review effort level:** Lite --- 💡 Add a `code-review` agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.7c:Ta08,### 🟡 Changes recommended The DISCOVERY_ENVIRONMENT save/restore logic can restore incorrect values when the same variable is specified multiple times, and the new helper test currently depends on the caller’s ambient environment (potential flakiness). *Once you've addressed the issues Copilot identified, you can request another Copilot review.* Pull request overview Adds a CMake-facing way to inject environment variables specifically for Catch2 test *discovery* (the `--list-tests` run), addressing cases where the test executable needs a special environment just to start and emit JSON. **Changes:** - Adds `DISCOVERY_ENVIRONMENT =...` to `catch_discover_tests` and threads it through to `catch_discover_tests_impl`. - Implements temporary environment application + restoration around the discovery run in `CatchAddTests.cmake`. - Adds a pure-CMake helper test (and a fake listing “executable”) plus documentation updates for the new option. File summaries | File | Description | | ---- | ----------- | | `extras/Catch.cmake` | Adds the public `DISCOVERY_ENVIRONMENT` option and forwards it into the discovery script for POST_BUILD and PRE_TEST modes. | | `extras/CatchAddTests.cmake` | Applies `TEST_DISCOVERY_ENVIRONMENT` during discovery and restores environment afterward. | | `docs/cmake-integration.md` | Documents the new option, its scope (discovery-only), and provides usage examples. | | `tests/CMakeLists.txt` | Registers the new CMake helper test. | | `tests/TestScripts/DiscoverTests/TestDiscoveryEnvironment.cmake` | Adds a unit test verifying propagation and non-leak/restoration semantics. | | `tests/TestScripts/DiscoverTests/FakeListingExecutable.cmake` | Adds a fake listing script used by the new helper test to reflect environment state in the discovered test name. | Review details - **Files reviewed:** 6/6 changed files - **Comments generated:** 3 - **Review effort level:** Lite --- 💡 Add a `code-review` agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.62:["$","$L75",null,{"entries":[{"key":["platform",{"userId":"anon"},"pulls","page",{"owner":"catchorg","repo":"Catch2","pullNumber":3200}],"data":{"repositoryId":"5332","detail":{"author":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"},"authorId":"117641393","baseRefName":"devel","closedAt":null,"comments":6,"createdAt":"2026-09-06T18:38:06Z","headRefName":"itz-puneet/discovery-environment","id":"4950670","isDraft":false,"labels":[],"number":3200,"repository":{"name":"Catch2","owner":"catchorg","provider":"forgejo"},"state":"open","title":"Add DISCOVERY_ENVIRONMENT option to catch_discover_tests","updatedAt":"2026-10-08T12:46:39Z","url":"https://trylle.com/catchorg/Catch2/pulls/3200","body":"$78","additions":291,"deletions":2,"changedFiles":6,"commits":2,"reviewComments":4,"headSha":"7732946358138878724ba626ddca1e8bc21730d6","baseSha":"76dd8f58df471103c2c5354cfcb0bdc98e412817","headRepoOwner":"catchorg","headRepoName":"Catch2","isMerged":false,"mergeCommitSha":null,"mergedBy":null,"mergeable":true,"mergeableState":"clean","conflictingFiles":null,"requestedTeams":[],"requestedReviewers":[],"graphqlId":"issue:3200"},"comments":[{"id":26976222,"graphqlId":"26976222","body":"$79","createdAt":"2026-09-06T19:55:25Z","author":{"avatarUrl":"https://cdn.trylle.com/media/images/5e3f75a58a43348936a07ce6e8dd8711?key=Ae6xhvuzh4aXwU205cpIJNX9%2BIn9kZh8R6aw3M%2BC8y5YgyEDE1KwsT5hCnqy3dn7Ps5f3STQZCtX74pUyG29vl0nNquP3mfoxMU5dTsQpwHlFydBDr0OlB1lV92bP2wCfMv6RLduXbkswFRDLVVXcVlgaL%2B8dDNFXZjPA2t6sq9jWPgnA7W4mOW8MQ%3D%3D","externalProvider":"github","login":"codecov[bot]","type":"Bot","url":"https://github.com/apps/codecov"}},{"id":26976250,"graphqlId":"26976250","body":"@horenmar when you get a chance, could you take a look at this one? It adds `DISCOVERY_ENVIRONMENT` to `catch_discover_tests` for #1810, so an executable that needs particular environment variables just to list its tests can be discovered.\n\nCI is green (AppVeyor + codecov), and the Copilot review comments are addressed. The option is threaded through all four call sites, and there's a pure-CMake test (`CMakeHelper::DiscoveryEnvironment`) that uses `cmake -P` as the fake executable so it runs on Windows too.\n","createdAt":"2026-10-06T18:58:53Z","author":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"}}],"commits":[{"sha":"7732946358138878724ba626ddca1e8bc21730d6","message":"Fix restore of repeated DISCOVERY_ENVIRONMENT entries, harden its tests\n\nA repeated entry such as `FOO=a;FOO=b` stashed the pre-discovery value on\nevery iteration. By the second one `FOO` had already been modified, so the\nstash held `a` rather than the original value, and the restore put back `a`\ninstead of what was there before discovery. The value is now stashed only\nthe first time a name is seen, which leaves last-one-wins behaviour during\ndiscovery unchanged.\n\nThe unit test asserted on a variable it inherited from the caller, so it\ncould fail spuriously for anyone who happened to have that variable set,\nand its cleanup unset the variable unconditionally, clobbering a value the\ncaller may have wanted. It now stashes and clears the variable up front and\nrestores it at the end.\n\nAlso adds a regression case covering the repeated-entry behaviour.\n","createdAt":"2026-09-07T00:16:43+05:30","author":{"avatarUrl":"","login":"","name":"itz-puneet","type":"User","url":""},"verification":{"verified":false,"reason":"gpg.error.not_signed_commit"}},{"sha":"3df298f8f64d12b537d5eb067d51cc4b01617a6d","message":"$7a","createdAt":"2026-09-07T00:07:29+05:30","author":{"avatarUrl":"","login":"","name":"itz-puneet","type":"User","url":""},"verification":{"verified":false,"reason":"gpg.error.not_signed_commit"}}],"events":[{"id":26965338,"event":"reviewed","createdAt":"2026-09-06T18:42:13Z","actor":{"avatarUrl":"https://cdn.trylle.com/media/images/cc388f5bd11d20eabcb149edb1a625a8?key=AQN9Yde%2FA1zhxhpyqcQF8eUTlbD8%2BXJrFXVFYXqT%2Bk5vC2VnF6wPjQdBWj1QtDjoh0Fb2%2B02nTytx5OUGsOBhEMB5EjvAA7Qe3VXuv370TPY5YjMAc6rHQV3%2Fz4LbbumgprNtK1ebIZY8iRLOVcofRQk3yrivns7hvOIcPNs90aFjGVADxCDpB8WCOI%3D","externalProvider":"github","login":"copilot-pull-request-reviewer[bot]","type":"Bot","url":"https://github.com/apps/copilot-pull-request-reviewer"},"reviewId":3629800,"reviewState":"COMMENT","body":"$7b"},{"id":26965342,"event":"reviewed","createdAt":"2026-09-06T18:47:00Z","actor":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"},"reviewId":3629801,"reviewState":"COMMENT"},{"id":26965344,"event":"reviewed","createdAt":"2026-09-06T18:47:04Z","actor":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"},"reviewId":3629802,"reviewState":"COMMENT"},{"id":26965346,"event":"reviewed","createdAt":"2026-09-06T18:47:08Z","actor":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"},"reviewId":3629803,"reviewState":"COMMENT"}],"reviews":[{"id":3629800,"state":"COMMENT","author":{"avatarUrl":"https://cdn.trylle.com/media/images/cc388f5bd11d20eabcb149edb1a625a8?key=AQN9Yde%2FA1zhxhpyqcQF8eUTlbD8%2BXJrFXVFYXqT%2Bk5vC2VnF6wPjQdBWj1QtDjoh0Fb2%2B02nTytx5OUGsOBhEMB5EjvAA7Qe3VXuv370TPY5YjMAc6rHQV3%2Fz4LbbumgprNtK1ebIZY8iRLOVcofRQk3yrivns7hvOIcPNs90aFjGVADxCDpB8WCOI%3D","externalProvider":"github","login":"copilot-pull-request-reviewer[bot]","type":"Bot","url":"https://github.com/apps/copilot-pull-request-reviewer"},"body":"$7c","submittedAt":"2026-09-06T18:42:13Z","official":false},{"id":3629801,"state":"COMMENT","author":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"},"submittedAt":"2026-09-06T18:47:00Z","official":false},{"id":3629802,"state":"COMMENT","author":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"},"submittedAt":"2026-09-06T18:47:04Z","official":false},{"id":3629803,"state":"COMMENT","author":{"avatarUrl":"https://cdn.trylle.com/media/images/b84088dce6bddf61149e82d3a3175fc8?key=AU7dyGDcQ5gdi35zC%2FBy%2FJOvYkG4G3AL7w9ch5EZeyIzsQLG06A7MZTtkfHp5DSI8M%2Bu9HpXALe2mRIT6Bw6HsXy6%2Be0nv%2BemiI9%2BKp1WgFhzwO21TWCujR1KWHN7TB2nm6YLSoarASy07JKrEkT%2FYh2XE9k34xb8561SWOno%2Fe9%2FEyaCEZwUSGx3VU%3D","externalProvider":"github","login":"itz-puneet","type":"User","url":"https://github.com/itz-puneet"},"submittedAt":"2026-09-06T18:47:08Z","official":false}],"stackEvents":[],"commentPagination":{"totalCount":6,"perPage":30,"loadedPages":[1]},"eventPagination":{"loadedPages":[1],"hasMore":false},"headRefDeleted":false},"fetchedAt":1793417252839}],"children":"$L7d"}] 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Commits on Sun, Sep 6, 2026