# Reliving Your Happiest HTTP Interactions with Ruby's VCR Gem

DevFeed: [Reliving Your Happiest HTTP Interactions with Ruby's VCR Gem](<https://devfeed.tech/articles/reliving-your-happiest-http-interactions-with-ruby-s-vcr-gem-1423.md>)

Original publisher: [Read original article](<https://shopify.engineering/how-to-program-your-vcr>)

Author: Stephen Prater

Published: 2023-01-05T14:00:00Z

Content type: article

Language: en

Sources: [Shopify Engineering](<https://devfeed.tech/sources/shopify-engineering.md>), [Shopify Engineering - Shopify Engineering](<https://devfeed.tech/sources/shopify-engineering-shopify-engineering.md>)

Topics: [Ruby](<https://devfeed.tech/topics/ruby.md>), [Mocking](<https://devfeed.tech/topics/mocking.md>), [API](<https://devfeed.tech/topics/api.md>), [debugging](<https://devfeed.tech/topics/debugging.md>)

Tags: [apis](<https://devfeed.tech/tags/apis.md>), [debugging](<https://devfeed.tech/tags/debugging.md>), [http](<https://devfeed.tech/tags/http.md>), [mocking](<https://devfeed.tech/tags/mocking.md>), [ruby](<https://devfeed.tech/tags/ruby.md>), [testing](<https://devfeed.tech/tags/testing.md>)

## AI overview

This article explains how Ruby's VCR library records live HTTP interactions and replays them in tests, producing predictable responses while verifying requests. It compares VCR with WebMock mocks and stubs, emphasizing the tradeoff between manually constructed test data and recordings that accurately represent an external API's behavior at capture time.

## Source excerpt

VCR is a Ruby library that records HTTP interactions and plays them back to your test suite, verifying input and returning predictable output. If you're struggling with difficult to maintain mocks, misbehaving APIs or complex multi-step interactions and would like tests that are more reliable, faster, and easier to debug, VCR can help you get there. Here's how.