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|
Feature: Freezing Time
When dealing with an HTTP API that includes time-based compontents
in the request (e.g. for signed S3 requests), it can be useful
on playback to freeze time to what it originally was when the
cassette was recorded so that the request is always the same
each time your test is run.
While VCR doesn't directly support time freezing, it does
expose `VCR::Cassette#originally_recorded_at`, which you can
easily use with a library like
[timecop](https://github.com/travisjeffery/timecop)
to freeze time.
Note: `VCR::Cassette#originally_recorded_at` will return `nil`
when the cassette is recording for the first time, so you'll
probably want to use an expression like
`cassette.originally_recorded_at || Time.now` so that it
will work when recording or when playing back.
Scenario: Previously recorded responses are replayed
Given a previously recorded cassette file "cassettes/example.yml" with:
"""
---
http_interactions:
- request:
method: get
uri: http://example.com/events/since/2013-09-23T17:00:30Z
body:
encoding: UTF-8
string: ""
headers: {}
response:
status:
code: 200
message: OK
headers:
Content-Length:
- "20"
body:
encoding: UTF-8
string: Some Event
http_version: "1.1"
recorded_at: Mon, 23 Sep 2013 17:00:30 GMT
recorded_with: VCR 2.0.0
"""
Given a file named "freeze_time.rb" with:
"""ruby
require 'time'
require 'timecop'
require 'vcr'
VCR.configure do |vcr|
vcr.cassette_library_dir = 'cassettes'
vcr.hook_into :webmock
end
VCR.use_cassette('example') do |cassette|
Timecop.freeze(cassette.originally_recorded_at || Time.now) do
path = "/events/since/#{Time.now.getutc.iso8601}"
response = Net::HTTP.get_response('example.com', path)
puts "Response: #{response.body}"
end
end
"""
When I run `ruby freeze_time.rb`
Then it should pass with "Response: Some Event"
|
