How to stub requests on domain or after method? - ruby-on-rails

Question

config.before(:each) do
stub_request(:post, "https://api.3rdpartysmsprovider.com/send.php?body=This%20is%20a%20test%20message&destination=60123456789&dlr='1'&output=json&password=0000000&reference=#{#text.sms_uid}&sender=silver&username=0000000").
to_return(:status => 200, :body => "01", :headers => {})
end
I am currently writing specs for a service class that sends an SMS and creates a log of it in our database. I'm trying to stub this request, however #text.sms_uid is a SecureRandom.urlsafe_base64 random code. Also I'm stubbing in config.before(:each).
Because of that, I can't specify the sms_uid in stub_request as the random sms_uid is generated after the stub is called. This causes the test to fail every time. Is there a way I can stub the request after it generates the code (in other words, after it goes through the specific method) or is there a way to stub all requests going through the domain "https://api.silverstreet.com"?

Answer 1

I see two options:
Stub SecureRandom.urlsafe_base64 to return a known string and use that known string when you stub_request:
config.before(:each) do
known_string = "known-string"
allow(SecureRandom).to receive(:known_string) { known_string }
stub_request(:post, "https://api.3rdpartysmsprovider.com/send.php?body=This%20is%20a%20test%20message&destination=60123456789&dlr='1'&output=json&password=0000000&reference=#{known_string}&sender=silver&username=0000000").
to_return(status: 200, body: "01", headers: {})
end
If SecureRandom.urlsafe_base64 is used in other places in your application, you'll need to stub it only in the specs where this request is generated.
Yes, you can stub any POST to that hostname
stub_request(:post, "api.3rdpartysmsprovider.com").
to_return(status: 200, body: "01", headers: {})
or even any request of any kind to that hostname
stub_request(:any, "api.3rdpartysmsprovider.com").
to_return(status: 200, body: "01", headers: {})
and webmock has a very large number of other ways to match requests.