René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Coverage in library `unit-test` includes dependent library files and does not reduce runtime when using coverage.include","articleBody":"### Command\n\ntest\n\n### Is this a regression?\n\n- [ ] Yes, this behavior used to work in the previous version\n\n### The previous version in which this bug was not present was\n\n_No response_\n\n### Description\n\nWhen running unit tests for a library with `@angular/build:unit-test`, the coverage report includes files from other workspace libraries that the tested library depends on, which is unexpected.\n\nAlthough this can be restricted with `coverage.include`, coverage execution time remains unchanged.\n\n### Minimal Reproduction\n\n1. Create two Angular libraries in the workspace (e.g. `lib-a` and `lib-b`)\n2. Make `lib-a` depend on `lib-b`\n3. Add a unit test in `lib-a`\n4. Run tests with coverage enabled:\n\n```bash\nng test lib-a --coverage\n```\n\n### Observed behavior\n\n- The coverage report contains files from `lib-b`, even though only `lib-a` is being tested.\n- Restricting `coverage.include` changes the generated report but does not noticeably reduce execution time.\n\n#### Performance\n\nTimes below are for a single library test run inside a larger Angular monorepo where the tested library depends on ~7 other libraries from the same workspace.\nExecution times vary depending on configuration (development vs production) used to build each of the libraries.\n\nWithout coverage:\n\n```text\nDuration 24.94s\n(transform 62.28s, setup 6.91s, import 98.85s, tests 982ms, environment 13.89s)\n```\n\nWith coverage (production build):\n\n```text\nDuration 154.60s\n(transform 78.24s, setup 13.24s, import 135.76s, tests 1.58s, environment 19.90s)\n```\n\nWith coverage (development build)\n\n```text\nDuration 201.20s\n(transform 57.83s, setup 10.09s, import 99.85s, tests 1.25s, environment 15.00s)\n```\n\n### Your Environment\n\n```text\n_                      _                 ____ _     ___\n    / \\   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|\n   / △ \\ | '_ \\ / _` | | | | |/ _` | '__|   | |   | |    | |\n  / ___ \\| | | | (_| | |_| | | (_| | |      | |___| |___ | |\n /_/   \\_\\_| |_|\\__, |\\__,_|_|\\__,_|_|       \\____|_____|___|\n                |___/\n    \n\nAngular CLI       : 22.0.4\nAngular           : 22.0.4\nNode.js           : 24.16.0\nPackage Manager   : npm 11.13.0\nOperating System  : linux x64\n\n┌───────────────────────────────────┬───────────────────┬───────────────────┐\n│ Package                           │ Installed Version │ Requested Version │\n├───────────────────────────────────┼───────────────────┼───────────────────┤\n│ @angular/animations               │ 22.0.4            │ ^22.0.4           │\n│ @angular/build                    │ 22.0.4            │ ^22.0.4           │\n│ @angular/cli                      │ 22.0.4            │ ^22.0.4           │\n│ @angular/common                   │ 22.0.4            │ ^22.0.4           │\n│ @angular/compiler                 │ 22.0.4            │ ^22.0.4           │\n│ @angular/compiler-cli             │ 22.0.4            │ ^22.0.4           │\n│ @angular/core                     │ 22.0.4            │ ^22.0.4           │\n│ @angular/forms                    │ 22.0.4            │ ^22.0.4           │\n│ @angular/localize                 │ 22.0.4            │ ^22.0.4           │\n│ @angular/platform-browser         │ 22.0.4            │ ^22.0.4           │\n│ @angular/platform-browser-dynamic │ 22.0.4            │ ^22.0.4           │\n│ @angular/router                   │ 22.0.4            │ ^22.0.4           │\n│ @angular/service-worker           │ 22.0.4            │ ^22.0.4           │\n│ ng-packagr                        │ 22.0.0            │ ^22.0.0           │\n│ rxjs                              │ 7.8.2             │ ~7.8.2            │\n│ typescript                        │ 6.0.3             │ ^6.0.3            │\n│ vitest                            │ 4.1.9             │ ^4.1.9            │\n│ zone.js                           │ 0.16.2            │ ~0.16.2           │\n└───────────────────────────────────┴───────────────────┴───────────────────┘\n```\n\n### Anything else relevant?\n\n_No response_","author":{"url":"https://github.com/Carlosamouco","@type":"Person","name":"Carlosamouco"},"datePublished":"2026-06-30T00:28:31.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/33484/angular-cli/issues/33484"}