VCR
v-6.0.0
v-6.0.0
  • Introduction
  • Upgrade
  • Changelog
  • About These Examples
  • License
  • Contributing
  • Cassettes
    • Cassette Format
    • Naming
    • Error for HTTP Request Made When No Cassette Is in Use
    • Dynamic ERB Cassettes
    • Automatic Re-Recording
    • Exclusive Cassette
    • Update Content Length Header
    • Decode Compressed Response
    • Allow Unused HTTP Interactions
    • Freezing Time
  • Record modes
    • Once
    • New Episodes
    • None
    • All
    • Record on Error
  • Configuration
    • Cassette Library Dir
    • Hook Into
    • Default Cassette Options
    • Ignore Request
    • Filter Sensitive Data
    • Allow HTTP Connections When No Cassette
    • Debug Logging
    • Preserve Exact Body Bytes
    • URI Parser
    • Query Parser
  • Hooks
    • Before Record Hook
    • Before Playback Hook
    • Before HTTP Request Hook
    • After HTTP Request Hook
    • Around HTTP Request Hook
  • Request matching
    • Introduction
    • Matching on Method
    • Matching on URI
    • Matching on Host
    • Matching on Path
    • Matching on Query String
    • Matching on Body
    • Matching on Headers
    • Identical Requests Are Replayed in Sequence
    • Register and Use a Custom Matcher
    • URI Without Param(s)
    • Playback Repeats
    • Matching on Body as JSON
  • Test frameworks
    • Usage With Test::Unit
    • Usage With RSpec Metadata
    • Usage With Cucumber
  • Middleware
    • Rack
    • Faraday Middleware
  • HTTP Libraries
    • Net::HTTP
    • EM HTTP Request
Powered by GitBook
On this page
  • Background ()
  • Cassette is not re-recorded when not enough time has passed
  • Cassette is re-recorded when enough time has passed

Was this helpful?

  1. Cassettes

Automatic Re-Recording

Over time, your cassettes may get out-of-date. APIs change and sites you scrape get updated. VCR provides a facility to automatically re-record your cassettes. Enable re-recording using the :re_record_interval option.

The value provided should be an interval (expressed in seconds) that determines how often VCR will re-record the cassette. When a cassette is used, VCR checks the earliest recorded_at timestamp in the cassette; if more time than the interval has passed since that timestamp, VCR will use the :all record mode to cause it be re-recorded.

Background ()

Given a previously recorded cassette file "cassettes/example.yml" with:

--- 
http_interactions: 
- request: 
    method: get
    uri: http://localhost/
    body: 
      encoding: UTF-8
      string: ""
    headers: {}
  response: 
    status: 
      code: 200
      message: OK
    headers: 
      Content-Length: 
      - "12"
    body: 
      encoding: UTF-8
      string: Old Response
    http_version: "1.1"
  recorded_at: Tue, 01 Nov 2011 04:58:44 GMT
recorded_with: VCR 2.0.0

And a file named "re_record.rb" with:

$server = start_sinatra_app do
  get('/') { 'New Response' }
end

require 'vcr'

VCR.configure do |c|
  c.hook_into :webmock
  c.cassette_library_dir = 'cassettes'
end

VCR.use_cassette('example', :re_record_interval => 7.days, :match_requests_on => [:method, :host, :path]) do
  puts Net::HTTP.get_response('localhost', '/', $server.port).body
end

Cassette is not re-recorded when not enough time has passed

Given it is Tue, 07 Nov 2011

When I run ruby re_record.rb

Then the output should contain "Old Response"

But the output should not contain "New Response"

And the file "cassettes/example.yml" should contain "Old Response"

But the file "cassettes/example.yml" should not contain "New Response".

Cassette is re-recorded when enough time has passed

Given it is Tue, 09 Nov 2011

When I run ruby re_record.rb

Then the output should contain "New Response"

But the output should not contain "Old Response"

And the file "cassettes/example.yml" should contain "New Response"

But the file "cassettes/example.yml" should not contain "Old Response".

PreviousDynamic ERB CassettesNextExclusive Cassette

Last updated 5 years ago

Was this helpful?