quality-engineering-selector-stability skillA
quality-engineering-selector-stability is agent-read markdown (skill) from hoangnguyen0403/agent-skills-standard: Cross-stack selector and test-id policy for web and mobile automation. Use when writing or reviewing E2E/UI test locators, or adding data-testid/accessibility identifiers to components..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Quality Engineering: Selector Stability ## **Priority: P0 (CRITICAL)** ## Web Ladder `getByRole` / `getByLabel` > `getByTestId` (`data-testid`) > attribute CSS. Never XPath, `nth-child`, or generated class names. ## Mobile Ladder Accessibility id > resource-id / `testTag` > predicate/uiautomator > XPath. Never XPath. ## Framework Map - React/Next.js: `data-testid`. React Native: `testID` + `accessibilityLabel`. - Flutter: `Semantics(identifier:)` for black-box E2E; `WidgetKeys` stay for widget tests. - SwiftUI/UIKit: `.accessibilityIdentifier`. Compose: `Modifier.testTag` + `testTagsAsResourceId = true`. ## Naming `<screen>-<element>-<role>`, kebab-case (e.g. `checkout-submit-button`). ## Insertion Policy Add ids to leaf interactive/assertable elements only, never layout wrappers. Never rename an existing id — ids are a public contract other tests depend on. ## Drift Classes `rename` (id changed), `restructure` (DOM/tree moved), `i18n` (visible text changed, id untouched). ## Anti-Patterns - Text selectors on translated strings, index-based locators (`nth`), generated/hashed class names. …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/quality-engineering-selector-stability@git:20260906.c5a4f43mdr add hoangnguyen0403/agent-skills-standard/quality-engineering-selector-stability@sha256:fcca95212bea3898Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_mrrqniqswxtqypse)
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Versions
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2071 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hoangnguyen0403/agent-skills-standard · 571 stars · license MIT · pushed 2026-09-24 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_mrrqniqswxtqypse GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/quality-engineering-selector-stability GET https://markdownregistry.com/api/v1/blob/fcca95212bea38987a0c63d0f2ec8d5a1c7ba0281dfd1ce8d90c58fefe80b077
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