Introduction to vcr

In vcr: Record 'HTTP' Calls to Disk

knitr::opts_chunk$set(
    comment = "#>",
    collapse = TRUE,
    warning = FALSE,
    message = FALSE,
  eval = FALSE
)

vcr introduction

vcr is an R port of the Ruby gem VCR (i.e., a translation, there's no Ruby here :))

vcr helps you stub and record HTTP requests so you don't have to repeat HTTP requests.

The main use case is for unit tests, but you can use it outside of the unit test use case.

vcr works with the crul and httr HTTP request packages.

Check out the HTTP testing book for a lot more documentation on vcr, webmockr, and crul, and other packages.

Elevator pitch

Installation

CRAN

install.packages("vcr")

Development version

remotes::install_github("ropensci/vcr")

library("vcr")

Getting Started

Basic usage

Terminology

Workflows

Configuration

Matching/Matchers

Note about missing features

vcr documentation built on July 9, 2023, 5:30 p.m.