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xcode-ui-test-stabilizer | Build Swift Apps

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Build Swift Apps
xcode-ui-test-stabilizer

Skill

xcode-ui-test-stabilizer

From Build Swift Apps

Creates and stabilizes Xcode UI e2e tests. Handles environment setup, focus/input stabilization, logging/attachments, and flakiness triage. Use when writing, debugging, or making UI test suites reliable.

Popularity

Stars

20

Forks

2

Shared by

2

Invocation

How this skill is triggered — by the user, by Claude, or both

Slash command

/build-swift-apps:xcode-ui-test-stabilizer

User invocable

Model invocable

Inline context

Default effort

Context Preview

The summary Claude sees in its skill listing — used to decide when to auto-load this skill

Build deterministic UI end-to-end tests and debug flaky runs. Prefer stable accessibility identifiers, environment-driven setup, and explicit wait conditions. Always attach logs and screenshots on failure.

Supporting Files

references/ui-e2e-playbook.mdscripts/run_ui_test.sh

SKILL.md

58 lines · ~602 tokens

Stats

LanguagePython

Stars20

Forks2

MaintenanceExcellent

Last CommitJun 3, 2026

Actions

View Source View Plugin View on GitHub View README

Tags

xcode-ui-testing

Stats

LanguagePython

Stars20

Forks2

MaintenanceExcellent

Last CommitJun 3, 2026

Actions

View Source View Plugin View on GitHub View README

Tags

xcode-ui-testing

Xcode UI Test Stabilizer

Overview

Build deterministic UI end-to-end tests and debug flaky runs. Prefer stable accessibility identifiers, environment-driven setup, and explicit wait conditions. Always attach logs and screenshots on failure.

Workflow

Define the flow and success signals.
- Identify the UI state that proves success (accessibility identifiers, log markers, or system-visible views).
- Decide which logs to capture (app log, build log, UI test log).
Add or update the UI test.
- Use stable identifiers (avoid labels that can change or be localized).
- Avoid typing into complex text components when possible; prefer injecting text via test-only defaults.
- Gate test-only behavior behind env flags so production behavior is unchanged.
Stabilize the app for UI tests.
- Ensure the app activates and brings windows to front in UI test mode.
- Disable modal blockers or auto-approve when tests run.
- Use in-memory persistence for tests if persistent stores are fragile.
Run the test with the provided script or your own command.
- Use scripts/run_ui_test.sh (from this skill) or run xcodebuild test with -only-testing.
Triage failures.
- Attach logs and screenshots.
- Search logs for build/preview errors and unexpected user-stop messages.
- Iterate until the test is deterministic.

Stability checklist (quick wins)

Use waitForExistence for every critical element.
Assert the app is running foreground before input.
Avoid typeText for long text; prefer env-injected defaults.
Click the window before interacting.
Keep timeouts explicit and generous for CI machines.
Attach logs and screenshots on failure.

References

Read references/ui-e2e-playbook.md for generic flags, focus fixes, typing workarounds, and debugging patterns.

Resources

scripts/

scripts/run_ui_test.sh — run a single UI test with optional .env loading and xcodebuild args.

references/

references/ui-e2e-playbook.md — general UI E2E playbook, flags, and troubleshooting.

$

npx claudepluginhub xopoko/build-swift-apps --plugin build-swift-apps

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