Coverage Report

Coverage Report

Overview

Produces meeting-ready connector-coverage and capability metrics for the hyperswitch-prism repo by reusing the existing field-probe data (data/field_probe/*.json, git-tracked) and the aggregation in scripts/generators/docs/coverage_summary.py. Because the probe data is committed, any historical baseline is reconstructable from git — no re-probe needed.

Core principle: quote supported COUNTS as the growth signal. Coverage percentages/shares can lie: when the probe's status taxonomy shifts between two snapshots (a status bucket added/removed, or many combos reclassified to not_supported which is excluded), the share moves for non-work reasons. Always run the taxonomy-shift check and state its caveats before presenting any percentage.

Two coverage data sources — capability vs test-pass

This skill reports two complementary kinds of coverage. Be explicit about which one a number is:

Capability is the broader number (code exists) and is the default for "what did we ship". Test-pass is the stricter, live number (it works against the real sandbox, creds permitting) — use it when the question is about real working coverage or pass-rate growth. They will not match; capability ≥ test-pass by construction.

Unit consistency (HARD): in BOTH sources, API coverage = connector × flow cells and PMT coverage = connector × payment-method cells — the full cross-product, so denominators are in the 100s. Do NOT report test-pass API/PMT as "N of 25 flows" or "N of 18 methods" (distinct-dimension counting) — that silently changes the unit and is not comparable to the capability numbers or to the production rows. §5 already uses the cross-product unit; keep it that way.

When to use

• A manager/stakeholder asks for coverage data, "what changed", or a month-over-month / since-release delta.
• You need current coverage numbers, a merged-PR activity summary, or which connectors/flows moved.
• NOT for: deep code review, generating the full all_connector.md docs (that's make docs), or non-coverage metrics.

Modes — pick the one that answers the question

Run the exact commands from references/command-cookbook.md (each section is copy-paste, read-only, prints inline). For metric definitions and the caveat rules, read references/methodology.md.

For a full "meeting packet", run Diff + PR activity together (the diff gives the numbers, PR activity gives the "why").

Freshness — "latest main" (default data source)

By default the skill reports coverage as of latest main, read straight from git — it never stashes, checks out, or pulls, so your working tree / branch / stash stay untouched.

• BASE=prism/main is the default base ref. prism = juspay/hyperswitch-prism — the remote your PRs merge into. (Your local main tracks origin = juspay/connector-service, a different, diverging repo — don't use it for these reports.)
• Run cookbook §0 first: git fetch prism main — the only network step, offline-tolerant (falls back to the cached ref and warns).
• Same-remote rule: the coverage base ($BASE) and the PR-activity repo (§2) MUST be the same remote (prism), or the two halves describe different worlds.
• Set SOURCE=worktree to instead compare your local checkout ("what does my branch add over main").

Baseline selection (SINCE)

The Diff/Drilldown modes need a baseline, resolved on the $BASE lineage (default prism/main):

• date YYYY-MM-DD (default: first of the current month) → git rev-list -1 --before=<date> $BASE (robust to weekend gaps — preferred for month boundaries).
• CalVer tag YYYY.MM.DD.N → git rev-parse <tag>.
• N-days 30d → git rev-list -1 --before='30 days ago' $BASE.
• commit SHA → used directly.

Methodology rules (HARD — do not skip)

• Report against latest prism/main, read from git (cookbook §0 git fetch prism main). Never stash/checkout/pull — the working tree is left untouched. Coverage base and PR repo must BOTH be prism.
• Quote supported COUNTS as growth. They're immune to the not_implemented↔not_supported boundary shift.
• Always report drift — cookbook §1 prints PM drift / API drift / TOTAL drift (status reclassification: not_supported/error churn, NOT shipped work). If TOTAL drift ≥ 50, do NOT present share/% as growth — quote supported counts and say why.
• not_supported is excluded from coverage; error folds into not_implemented (matches coverage_summary.py). Apply the same aggregation to both snapshots (the cookbook does).
• PR queries use the prism remote → juspay/hyperswitch-prism, NOT origin (juspay/connector-service has 0 PRs). Exclude chore(version) release-bump PRs from feature counts.

Presentation (default: inline)

Present the Coverage Growth Summary markdown table that §1 prints — columns Metric | Base | Current | Change | Growth, rows Connectors / API Supported (Flows) / PM Supported (Methods). The API/PM Supported cells show supported/total (pct%) where total = supported + not_implemented. Follow with the Highlights bullets and the Overall line (§1 prints these too). Always keep the one-line footnote that the API/PM % is denominator-sensitive (its base shrinks as flows are reclassified to not_supported), so the trustworthy growth signal is the counts / Change, not the %. Only write a markdown file, Slack blurb, or CSV if the user explicitly asks.

For Test coverage (§5), present the Test Coverage Summary table the script prints (Metric | Base | Current | Change | Growth). Label it clearly as test-pass (not capability) so it is not confused with the §1 numbers, and keep the unit footnote the script emits. Quote the counts / Change as growth.

Common mistakes

References

• references/command-cookbook.md — exact copy-paste commands for every mode.
• references/methodology.md — metric definitions, the taxonomy-shift contamination story, what to quote.