feat(vscode): support run tests with debug or coverage, list test items in tree structure

[claneo]

depends on #720

New Features

1. Better test list view
   1. Display test items in a tree structure instead of the previous flat list
   2. Hide the workspace node if there's only one workspace open
   3. Hide the project node if there's only one project and it is placed at the root of the workspace
2. Spawn a separate worker every time the test is run
   1. Support debugging tests by starting the worker with the --inspect-wait argument
   2. Support test run cancellation by killing the worker
3. Support running tests with coverage
4. Use the capabilities of rstest itself to execute multiple test files in parallel
5. The test files scan result is exactly the same as rstest. Now the extension reads include/exclude from the config file, scans with tinyglobby, then watches changes with the VSCode watcher, and filters files with picomatch

20251205-202829.mp4

Related Links

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[Copilot]

Pull request overview

This PR significantly enhances the VSCode extension by adding test debugging and coverage support, improving the test tree visualization, and refactoring the test execution architecture to use separate worker processes for each test run.

Key changes:

• Implements debug and coverage run profiles for tests, enabling developers to debug tests and collect coverage information directly from VS Code
• Restructures the test item tree to hide workspace/project nodes when there's only one, providing a cleaner UI
• Replaces the long-lived worker process with ephemeral workers spawned per test run, enabling test cancellation and better isolation

Reviewed changes

Copilot reviewed 33 out of 35 changed files in this pull request and generated 14 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Updated dependencies: removed glob package, added tinyglobby and picomatch for file matching, added coverage-istanbul types
packages/vscode/tests/suite/workspace.test.ts	Updated test assertions to reflect new tree structure with consolidated folder nodes
packages/vscode/tests/suite/progress.test.ts	Simplified test item path and added cancellation token parameter
packages/vscode/tests/suite/index.ts	Migrated from callback-based glob to promise-based tinyglobby
packages/vscode/tests/suite/index.test.ts	Refactored to use shared toLabelTree helper from helpers.ts
packages/vscode/tests/suite/helpers.ts	Enhanced toLabelTree with fileOnly parameter and updated getProjectItems for new structure
packages/vscode/tests/suite/config.test.ts	Removed test file (functionality moved to rstest config-based discovery)
packages/vscode/src/worker/reporter.ts	Refactored to use birpc event bindings and added CoverageReporter class for VS Code coverage integration
packages/vscode/src/worker/logger.ts	Updated to use birpc's asEvent pattern
packages/vscode/src/worker/index.ts	Simplified worker initialization to create rstest instance per run instead of maintaining state
packages/vscode/src/types.ts	Consolidated types into WorkerInitOptions, removing separate init and run data types
packages/vscode/src/testTree.ts	Restructured test item management with separate classes for folders, files, and cases
packages/vscode/src/testRunReporter.ts	Added coverage reporting support with onCoverage method and RstestFileCoverage class
packages/vscode/src/project.ts	Major refactoring: uses tinyglobby/picomatch for file discovery, implements tree building with folder collapsing
packages/vscode/src/master.ts	Creates ephemeral worker per test run, adds debug support with --inspect-wait, implements cancellation via worker termination
packages/vscode/src/extension.ts	Updated test run logic to support workspace/project/folder/file/case hierarchy, added deactivate function
packages/vscode/src/config.ts	Removed testFileGlobPattern setting (now read from rstest config)
packages/vscode/package.json	Updated dependencies and removed testFileGlobPattern configuration option
packages/vscode/README.md	Updated configuration table to reflect removed setting
packages/coverage-istanbul/tsconfig.json	Enabled declarationMap for better debugging
packages/coverage-istanbul/src/provider.ts	Added support for reporter objects (not just names/arrays)
packages/coverage-istanbul/rslib.config.ts	Added conditional source map generation
packages/coverage-istanbul/package.json	Added SOURCE_MAP environment variable to dev script
packages/core/src/types/coverage.ts	Extended reporter types to accept ReportBase objects
packages/core/src/pool/index.ts	Cleared reporters array when serializing runtime config to avoid serialization issues
packages/core/src/pool/forks.ts	Added SIGTERM handler for graceful worker shutdown
packages/core/package.json	Added istanbul-lib-report types
packages/core/LICENSE.md	Updated magic-string repository URL
e2e/basic/test/meta.test.ts	Updated path expectations to be relative to project root
e2e/basic/test/filePath.test.ts	Updated path expectations to be relative to project root
e2e/bail/index.test.ts	Fixed test log filtering to be more specific
.vscode/tasks.json	Restructured build tasks with proper dependencies and added rslib problem matcher
.vscode/launch.json	Updated pre-launch task reference and disabled autoAttachChildProcesses
.vscode/extensions/rslib-problem-matcher/package.json	Added custom problem matcher for rslib watch mode
.gitignore	Updated to include .vscode/extensions directory

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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[fi3ework]

LGTM, great work, and a huge thanks to @claneo.

[fi3ework]

cc @9aoy , coverage reporter now can accept an instance, i think it's nice to have that. PTAL.

[9aoy]

👏