RSpec State Management: Choosing Between Lazy let and Eager let!
Learn when to use RSpec's lazy let versus eager let! for test state management. Includes comparison table, concrete example, and performance trade-offs.
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rspecRSpec Verifying Doubles: Choosing instance_double, class_double, or object_double
Use RSpec verifying doubles to catch stale mocks early. Compare instance_double, class_double, and object_double with validation steps.
Let vs Let! in RSpec: When to Lazily or Eagerly Evaluate Setup
Choose wisely between RSpec’s <code>let</code> and <code>let!</code> to control when data is created. This guide explains lazy vs eager evaluation, shows a real example, and lists trade‑offs so your tests stay fast and reliable.
Reducing RSpec Duplication with Shared Examples: A Practical Guide
Define a contract once with RSpec shared examples and reuse it across example groups — including parameterization, it_behaves_like vs. include_examples, and the traps to avoid.