poshi-shrink - SKILL.md Agent Skill

argument-hint: "" description: Shrink a Liferay component's Poshi test suite by merging overlapping tests. Use when the user asks to reduce, merge, or clean up Poshi tests for a @component-name. name: poshi-shrink

Shrink Poshi Tests

A playbook for shrinking a Liferay component's Poshi test suite before migrating tests to Playwright, Java integration, or the unit layer. Typical outcome: a file with ~27 tests ends up with ~8, in ~24 small reviewable commits.

Preconditions

The working tree is clean. Abort and ask the user to commit or stash first when dirty.

Input

Component Name

The @component-name annotation, passed as ${ARGUMENTS} (e.g., portal-analytics-cloud, portal-commerce, portal-content-management). When ${ARGUMENTS} is empty, scan .testcase files under portal-web/test/functional/com/liferay/portalweb/tests/enduser, list the distinct @component-name values found, and ask the user to pick one. Do not guess.

Verify the component by enumerating, under portal-web/test/functional/com/liferay/portalweb/tests/enduser, every .testcase whose @component-name matches; abort when no file matches. The same enumeration feeds the Shrink Plan: per file, capture the path, the testray.main.component.name value, and the test-block count.

Expected Output

Shrink Plan

Build the plan via plan mode (EnterPlanMode) using this format:

## Inventory

| File | Test Count | testray.main.component.name |
| --- | --- | --- |
| <path> | <N> | <component> |

## Files to Attack

### <file path> (N → M)

> **Group A — <Context name>** (N → 1):
>
> - Rename `<Keeper>` → `<FinalName>` (commit 1)
> - Merge `<Source2>` → adds `<assertion>` (commit 2)
> - Merge `<Source3>` → adds `<assertion>` (commit 3)
> - … etc

### <next file path> (N → M)

…

Sort the inventory ascending by test count so small files (easy wins) surface first. Avoid files with 40+ tests on the first pass.

Pick the keeper for each group: the test with the most comprehensive assertions, even when its name is awkward — the keeper does not have to keep its name. The final name describes the combined behavior (e.g., ContentPerformancePanelInBlogDisplayPage, LanguageDropdownInContentPage) and is typically different from the keeper's original name.

Common merge-worthy signals — classic patterns from Liferay test names:

Multiple AuthorNotShowIn<Context> tests — usually one per panel context is enough.
Multiple MetricsIconVisibleIn<Context> + PanelInformationIn<Context> — the first checks title+traffic, the second title+URL+language — huge overlap between the two.
CheckAllInfo* or similar catch-all tests that duplicate specific-field tests.
Tests that share the full setUp + first N tasks (navigate, create blog, open panel) and differ only in the final assertion.

Merge Signals — DO

Same setup + same UI surface + different assertion → one test with N assertion tasks.
Tests differing only in asset type (blog vs document vs widget vs content page) when the panel behavior being asserted is identical — one representative usually suffices; propose deletion for the rest rather than merging four tests into four.
Tests where the source's assertion is already fully covered in the target — the commit still happens — it just deletes the source.

Merge Signals — DO NOT

Tests with test-level property overrides that differ: property portal.upstream = "quarantine", property test.liferay.virtual.instance = "false", property test.run.type = "single" (when not inherited).
Tests with special setup (localized URLs, fragment translations, system settings changes, extra page creation).
Tests with @ignore / @skip annotations.

Shrunk Test Files

After ExitPlanMode returns the user's approval, apply each operation in the order it appears in the plan and commit after each one — one commit per operation, never squashed. The per-merge granularity is exactly what makes the diff reviewable.

Rename — change the keeper's test <OldName> to test <FinalName> with no other edits. Commit message: <TICKET> Rename test <Keeper> to <FinalName>.
Merge — delete the source's test <Source> { ... } block and fold its unique assertions into the target as new task blocks. When the source's assertions are already fully covered by the target, simply delete the source. When the same condition is asserted at different strengths (e.g., AssertTextEquals.assertPartialText("web/<site-path>") vs the weaker AssertVisible value1="http://"), keep the stronger one. Commit message: <TICKET> Merge test <Source> into <FinalName>.

When the file convention keeps tests alphabetical, add a final <TICKET> Alphabetic order commit after all merges.

Summary

After the file is shrunk, report:

The file shrunk and its testray.main.component.name.
Before/after test counts.
Total commits made (renames + merges + optional cleanups).
Tests kept intact and the reason (special setup, differing properties, @ignore).