Danijel Martinek
412d994733
Lands L1 of the agent-first coverage architecture (ADR-020) — the
cover-the-diff gate. Reads a merged lcov + git diff against a base
ref, asserts every changed *executable* line was exercised.
Script: scripts/coverage/diff.mjs (zero-dep Node ESM)
- parseLcov: SF -> Map<line, count>; only DA records read
- parseGitDiff: parses --unified=0 output into Map<file, Set<line>>
- computeDiffCoverage: cross-references both, emits result tree
- Allowlist of paths that don't gate (tests, configs, docs, .sh,
DI bootstrap, interfaces, CMS, factories, contracts, UI)
- Path matching handles three lcov path conventions: absolute,
repo-relative, and per-package relative
- CLI flags: --base (default origin/main), --lcov (default
coverage/lcov.info), --json (suppress stderr summary)
- stdout: machine-readable JSON for the dispatch loop
- stderr: human summary
- Exit 0 on pass, 1 on fail or error
Test surface: scripts/coverage/diff.test.mjs (14 tests, all green)
- Fixtures at scripts/coverage/__fixtures__/{sample.lcov,sample-diff.patch}
- Covers: lcov parsing, diff parsing, pass path, uncovered lines,
non-executable line skipping, no-coverage-data detection,
allowlist filtering, end-to-end mixed case, path matching
Wired:
- root package.json adds "coverage:diff" script
- .gitignore anchored so per-package coverage/ stays ignored but
scripts/coverage/ stays tracked
Smoke-tested end-to-end against packages/auth/coverage/lcov.info —
correctly skips shell scripts + manifest files (via allowlist + path
suffix match), correctly flags files not present in the per-package
lcov (which is expected; full repo coverage needs the L2 aggregate
that the next story lands).
CI integration deferred to the L2 aggregate story (the merged
coverage/lcov.info this script reads doesn't exist yet — pnpm
coverage:aggregate produces it).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
50 lines
1.8 KiB
Diff
50 lines
1.8 KiB
Diff
diff --git a/packages/auth/src/application/use-cases/sign-in.use-case.ts b/packages/auth/src/application/use-cases/sign-in.use-case.ts
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index abc..def 100644
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--- a/packages/auth/src/application/use-cases/sign-in.use-case.ts
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+++ b/packages/auth/src/application/use-cases/sign-in.use-case.ts
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@@ -1,0 +2,2 @@
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+const a = 1;
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+const b = 2;
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@@ -4,1 +5,2 @@
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-old
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+const c = 3;
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+const d = 4;
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diff --git a/packages/auth/src/application/use-cases/sign-in.use-case.test.ts b/packages/auth/src/application/use-cases/sign-in.use-case.test.ts
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index abc..def 100644
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--- a/packages/auth/src/application/use-cases/sign-in.use-case.test.ts
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+++ b/packages/auth/src/application/use-cases/sign-in.use-case.test.ts
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@@ -10,0 +11 @@
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+new test line
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diff --git a/packages/auth/src/entities/models/user.ts b/packages/auth/src/entities/models/user.ts
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index abc..def 100644
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--- a/packages/auth/src/entities/models/user.ts
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+++ b/packages/auth/src/entities/models/user.ts
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@@ -2,1 +2,1 @@
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-old
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+modified
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diff --git a/packages/blog/src/application/use-cases/get-article.use-case.ts b/packages/blog/src/application/use-cases/get-article.use-case.ts
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index abc..def 100644
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--- a/packages/blog/src/application/use-cases/get-article.use-case.ts
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+++ b/packages/blog/src/application/use-cases/get-article.use-case.ts
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@@ -11,0 +12 @@
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+const uncovered = true;
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diff --git a/packages/media/src/application/use-cases/upload.use-case.ts b/packages/media/src/application/use-cases/upload.use-case.ts
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new file mode 100644
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index 0000000..abc
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--- /dev/null
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+++ b/packages/media/src/application/use-cases/upload.use-case.ts
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@@ -0,0 +1,5 @@
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+export const uploadUseCase = () => {
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+ return "uploaded";
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+};
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+// Line 4
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+// Line 5
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diff --git a/CLAUDE.md b/CLAUDE.md
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index abc..def 100644
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--- a/CLAUDE.md
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+++ b/CLAUDE.md
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@@ -1,1 +1,2 @@
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-old text
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+new text
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+more text
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