If you're not trying to record and replay real content, VCR is probably not the right tool (thought it can be "bent" to fit your use case, as you say). I'd suggest that WebMock might fit your use case better:
https://github.com/bblimke/webmock On Mon, Jun 29, 2015 at 12:34 AM, Juergen Schlinker < [email protected]> wrote: > I already had a quick look at VCR before. > I always thought that it's best for replaying real http content. > I am looking at faking web content dependent on the time. > However, I might be able to "bend" VCR to suite my needs. > Thanks for the suggestion! > > > 2015-06-26 17:10 GMT+02:00 Myron Marston <[email protected]>: > >> On Fri, Jun 26, 2015 at 3:02 AM, JSchlinker <[email protected]> >> wrote: >> >>> I am using Rspec to test a module that has an external dependency with >>> the Internet. >>> This is why I am trying to mock out the class that handles the actual >>> access of the webpage when running my tests. >>> >>> My class "Snapshot" (that I want to test) accesses a webpage when it is >>> requested and will save the html in a file when the hash of the content has >>> changed. >>> The filename should have a certain name according to the date/time and a >>> running number. >>> And there should be a log message when an error occours (e.g. no >>> Internet or website down), containing the status code (e.g. 404). >>> >>> I made some basic tests, but now wanted to write a test integrating a >>> couple of classes. >>> The only thing that I would like to mock is the Internet part. >>> As the snapshots are only generated when the html content changes I >>> thought about the following approach: >>> >>> - Use timecop to fake a time and be able to check if the saved filename >>> corresponds to this date/time >>> - Mock the class "Internet" by specifying certain time spans in which >>> the class should return a certain content >>> >>> My class under test looks like this: >>> >>> class Snapshot < ActiveRecord::Base >>> >>> def self.grab_website(uri) >>> response, content = Internet.access_webpage(uri) >>> # code that calculates the hash, saves the content or >>> generates an error log messages >>> end >>> >>> end >>> >>> >>> My Rspec "preparation code" for mocking the class Internet looks like >>> this: >>> >>> stub_const("Internet::WEBSITE_REPLIES", \ >>> { "http://www.thiswebsiteisimportanttome.com"; => \ >>> [["2015-06-12 15:30", "website_Version_A.html"] ,\ >>> ["2015-06-14 18:00", "website_Version_B.html"] ,\ >>> ["2015-06-14 18:50", 404] ,\ >>> ["2015-06-14 19:00", "website_Version_C.html"] ,\ >>> ["2015-06-26 11:35", "website_Version_D.html"]] } ) >>> >>> allow(Internet).to receive(:access_webpage) do |uri| >>> time = Time.now >>> content = nil >>> response_code = 0 # We're not connected to the >>> internet >>> >>> if Internet::WEBSITE_REPLIES.has_key?(uri) >>> filename = nil >>> timetable = Internet::WEBSITE_REPLIES[uri] >>> timetable.each do |timepoint_situation| >>> timepoint = Time.parse(timepoint_situation[0]) >>> if time > timepoint >>> filename = timepoint_situation[1] >>> end >>> end >>> if (filename.nil?) >>> response_code = 0 >>> elsif (filename.kind_of? Integer) >>> response_code = filename >>> else # filename is really a filename >>> content = File.read(filename) >>> response_code = 200 >>> end >>> end >>> next response_code, content >>> end >>> >>> >>> And my actual test looks like this: >>> >>> first_time = Time.local(2015, 6, 12, 15, 35) >>> second_time = Time.local(2015, 6, 14, 17, 00) >>> third_time = Time.local(2015, 6, 14, 18, 05) >>> >>> uri = "http://www.thiswebsiteisimportanttome.com"; >>> Timecop.freeze(first_time) # Version A >>> Snapshot.grab_website(uri) >>> >>> Timecop.freeze(second_time) # Version A (no changes) >>> Snapshot.grab_website(uri) >>> >>> Timecop.freeze(third_time) # Version B >>> Snapshot.grab_website(uri) >>> >>> snapshots = Snapshot.all >>> expect(snapshots.size).to eq(2) >>> >>> snapshot = snapshots[0] >>> expect(snapshot.time).to eq(first_time) >>> expect(snapshot.hash).to eq("234092384EF") >>> expect(snapshot.filename).to eq(...) >>> >>> snapshot = snapshots[1] >>> expect(snapshot.time).to eq(third_time) >>> expect(snapshot.hash).to eq("A8E92340213") >>> expect(snapshot.filename).to eq(...) >>> >>> # work to do: check the log messages ... >>> >>> >>> I have the feeling that there should be an easier way to do this. >>> Especially because I can't imagine that I'm the only one that wants to >>> test time dependent Website content. >>> I am grateful for any suggestions! >>> >>> J. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "rspec" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/rspec/c1ed74fa-8f54-40ae-a6ba-ccfab2584bc1%40googlegroups.com >>> <https://groups.google.com/d/msgid/rspec/c1ed74fa-8f54-40ae-a6ba-ccfab2584bc1%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> Take a look at VCR <https://relishapp.com/vcr/vcr/docs>. It is >> specifically designed for when you are testing HTTP-dependent code. >> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "rspec" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/rspec/dqkIqrX5Vgo/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To post to this group, send email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/rspec/CADUxQmtt_vrq%2BRTbNHC%2BE%2BRTAubATaQrz26my7Dtd8FVKx0Yqw%40mail.gmail.com >> <https://groups.google.com/d/msgid/rspec/CADUxQmtt_vrq%2BRTbNHC%2BE%2BRTAubATaQrz26my7Dtd8FVKx0Yqw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "rspec" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rspec/CALp6bixYJXsCpgwUm7c8Dgv7bn4U--yF84yqgmDu20wWT-jJ2w%40mail.gmail.com > <https://groups.google.com/d/msgid/rspec/CALp6bixYJXsCpgwUm7c8Dgv7bn4U--yF84yqgmDu20wWT-jJ2w%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "rspec" group. 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