feat(lsp): add test coverage support - #36314
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Implements test coverage visualization for the LSP testing API. When the test run kind is 'coverage', the LSP passes --coverage=<temp_dir> to 'deno test', collects the V8 coverage JSON files after execution, and sends a new 'deno/testCoverage' notification to the client. The notification payload includes file URIs with covered/uncovered line numbers (1-indexed) and coverage percentage per file. Closes denoland#18147
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Implements test coverage visualization for the LSP testing API (closes #18147).
When the test run kind is 'coverage', the LSP passes
--coverage=<temp_dir>todeno test, collects the V8 coverage JSON files after execution, and sends a newdeno/testCoveragenotification to the client.The notification payload includes:
The implementation parses the V8 ScriptCoverage format, converts character offsets to line numbers, and filters out external dependencies (only files under the workspace are reported).
Changes:
cli/lsp/testing/lsp_custom.rs— New types:FileCoverage,CoverageNotificationParams,CoverageNotificationcli/lsp/testing/execution.rs—collect_coverage_from_dir()reads and parses V8 JSON files,coverage_dir()method,--coverageflag integrationcli/lsp/client.rs—Coveragevariant onTestingNotification+ send handlerCompanion PR: denoland/vscode_deno#1389