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Writing readable expect assertions in Dart v1.0.0

Use this resource to write readable Dart assertions with expect and package:matcher

New

  • 372 downloads
  • 106 likes
  • 247 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install dart-expect-matcher-assertions

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent replaces manual checks with suitable matchers such as hasLength, contains or isA, so test failures are clear. It keeps length properties that do not belong to collections as they are.

Mostly picked by

Updated November 2, 2026

Card for the “Writing readable expect assertions in Dart” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
Apache-2.0

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What you get

  • SKILL.md: matchers for collections, types and properties
  • SKILL.md: async assertions and fixes for fragile checks
  • evals/evals.json: evaluation cases

Good fit for

  • Your tests fail with unclear messages
  • You are migrating old manual checks to expect

Not for

    Tags

    • dart
    • tests
    • expect
    • matcher
    • assertions

    About

    You say

    “Rewrite the assertions in this test file with more readable matchers.”

    Card for the “Writing readable expect assertions in Dart” skill

    Skill published by kevmoo under the Apache-2.0 license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to write readable Dart assertions with expect and package:matcher
    3. Review and adjust the result

    Content preview

    Files

    • evals/evals.json3.8 KB
    • LICENSE11.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md6.2 KB

    Origin and licence

    Listed unmodified

    Author
    kevmoo
    Source
    github.com/kevmoo/dash_skills/tree/48791b7c899ac895bc0aae7a9a6312df3d3e3ca3/skills/dart-matcher-best-practices
    Licence
    Apache-2.0

    Notice

    « dart-matcher-best-practices » (kevmoo, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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