test(linter/plugins): add eslint-plugin-sonarjs to conformance tests

[overlookmotel]

Add eslint-plugin-sonarjs to conformance tests.

This was largely motivated by trying to track down the CFG malfunctions reported in #18555. But there are none to be found!

99.7% pass rate. The last 0.3% (14 tests) is rules which use context.languageOptions.parser.parse, which we haven't implemented yet.

Failing test cases for rules which are type-aware are skipped (385 tests), as we cannot support them.

[overlookmotel]

• test(linter/plugins): add eslint-plugin-sonarjs to conformance tests #18646 👈 (View in Graphite)
• test(linter/plugins): conformance tester shorten filename in test cases in snapshots #18682
• test(linter/plugins): conformance tester identify known parsers by parseForESLint function #18680
• test(linter/plugins): conformance tester keep other module exports when mocking RuleTester modules #18679
• test(linter/plugins): conformance tester catch errors in describe callbacks #18678
• test(linter/plugins): conformance tester allow skipping tests which did not run with RuleTester #18677
• main

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[Copilot]

Pull request overview

This PR integrates eslint-plugin-sonarjs into the Oxlint JS plugins conformance test harness, so SonarJS’ own rule tests are run through Oxlint’s RuleTester and summarized in snapshots. It also adds the necessary wiring and submodule initialization to fetch, patch, and execute the SonarJS test suite.

Changes:

• Exported TestCases from the conformance rule_tester shim and currentRule from the capture module to enable SonarJS-specific RuleTester adaptations.
• Added a new sonarjs test group that locates SonarJS rule tests, patches their internal rule testers (including type-aware variants and a JSX filename fixup for a React-specific rule), and defines SonarJS-specific skip logic.
• Extended the conformance initialization script to clone and prepare the SonarJS repository and added a generated conformance snapshot sonarjs.md, as well as registering the new group in the global TEST_GROUPS list.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
apps/oxlint/conformance/src/rule_tester.ts	Exports TestCases type so external group adapters (SonarJS) can reuse the RuleTester test case structure.
apps/oxlint/conformance/src/capture.ts	Exports currentRule so the SonarJS group can inspect the currently running rule when patching its NoTypeCheckingRuleTester.
apps/oxlint/conformance/src/groups/sonarjs.ts	New SonarJS TestGroup that wires SonarJS test discovery, patches its rule testers for type-aware tests and JSX filename issues, and defines SonarJS-specific skip rules and parser configuration.
apps/oxlint/conformance/src/groups/index.ts	Registers the new sonarjs group alongside the existing ESLint, React Hooks, and Stylistic groups.
apps/oxlint/conformance/init.sh	Extends the setup script to clone/build the SonarJS repo, patch its tests/checkers for use with the conformance harness, and normalize import.meta.dirname and node:test usage.
apps/oxlint/conformance/snapshots/sonarjs.md	Generated conformance snapshot summarizing SonarJS rule/test pass/fail/skip stats under the Oxlint plugin API.

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[overlookmotel]

Merge activity

• Jan 28, 11:02 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jan 28, 11:02 PM UTC: overlookmotel added this pull request to the Graphite merge queue.
• Jan 28, 11:12 PM UTC: Merged by the Graphite merge queue.