Exchange XMPP contacts when invitee signs up

spec/services/create_account_spec.rb

@@ -1,4 +1,6 @@
 require 'rails_helper'
+require 'webmock/rspec'
+require 'json'
 
 RSpec.describe CreateAccount, type: :model do
   let(:ldap_client_mock) { instance_double(Net::LDAP) }
@@ -68,4 +70,37 @@ RSpec.describe CreateAccount, type: :model do
       service.send(:add_ldap_document)
     end
   end
+
+  describe "#exchange_xmpp_contacts" do
+    let(:inviter) { create :user, cn: "willherschel", ou: "kosmos.org" }
+    let(:invitation) { create :invitation, user: inviter }
+    let(:service) { CreateAccount.new(
+      username: 'isaacnewton',
+      email: 'isaacnewton@example.com',
+      password: 'bright-ideas-in-autumn',
+      invitation: invitation
+    )}
+
+    before do
+      stub_request(:post, "http://xmpp.example.com/api/add_rosteritem")
+        .to_return(status: 200, body: "", headers: {})
+    end
+
+    it "posts add_rosteritem commands to the ejabberd API" do
+      service.send(:exchange_xmpp_contacts)
+
+      expect(WebMock).to have_requested(:post, "http://xmpp.example.com/api/add_rosteritem")
+        .with { |req| req.body == {
+          localuser: "isaacnewton", localhost: "kosmos.org",
+          user: "willherschel", host: "kosmos.org",
+          nick: "willherschel", group: "Friends", subs: "both"
+        }}
+      expect(WebMock).to have_requested(:post, "http://xmpp.example.com/api/add_rosteritem")
+        .with { |req| req.body == {
+          localuser: "willherschel", localhost: "kosmos.org",
+          user: "isaacnewton", host: "kosmos.org",
+          nick: "isaacnewton", group: "Friends", subs: "both"
+        }}
+    end
+  end
 end