What is the difference between the eq, eql, and be matchers?

The 'eq' matcher tests value equality (==), 'eql' tests value and type equality (eql?), and 'be' or 'equal' tests for object identity (same object in memory).

How do I create a custom RSpec matcher for my project?

You can define a custom matcher using the 'RSpec::Matchers.define' block, where you specify the 'match' logic and optional failure messages.

How do I test if an array contains specific elements in any order?

Use the 'contain_exactly' matcher or its alias 'match_array' to verify that an array has specific elements regardless of their sequence.

Can I test for multiple conditions in a single RSpec expectation?

Yes, RSpec supports compound matchers using '.and' and '.or' syntax to combine multiple matchers into a single assertion.

How do I test that a method call changes a database count?

Use the 'change' matcher inside an 'expect { ... }' block, specifying the object and attribute or a block to monitor the transition from one value to another.

RSpec Matchers

Name: RSpec Matchers
Author: bastos

bybastos

安全与测试

Provides expert guidance on Ruby testing assertions, expectations, and the creation of custom RSpec matchers.

关于

The RSpec Matchers skill is designed to help Ruby developers write cleaner, more expressive tests by leveraging the full power of the RSpec expectation framework. It offers comprehensive syntax references for standard matchers—covering equality, collections, and side effects—while providing advanced patterns for composable and custom matchers. Whether you are refactoring legacy test suites or building complex domain-specific assertions, this skill ensures your test code is both readable and robust.

主要功能

Complete reference for built-in equality, comparison, and truthiness matchers
Detailed guidance on side-effect testing using change, raise_error, and output matchers
0 GitHub stars
Patterns for compound and composable matchers to create complex test conditions
Templates for building custom matchers with chain methods and specific failure messages
Advanced collection testing patterns including include, all, and contain_exactly

使用场景

Refactoring legacy Ruby test suites from 'should' syntax to modern 'expect' patterns
Implementing expressive integration tests for API responses and collection attributes
Creating domain-specific custom matchers for complex Rails model validations

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add bastos/ruby-plugin-marketplace rspec-matchers

For use in Claude.ai and ChatGPT

Download Skill

GitHub

关于