Add specs for Discourse Connect

.env.test

@@ -1,3 +1,6 @@
+DISCOURSE_PUBLIC_URL='http://discourse.example.com'
+DISCOURSE_CONNECT_SECRET='discourse_connect_ftw'
+
 EJABBERD_API_URL='http://xmpp.example.com/api'
 
 BTCPAY_API_URL='http://btcpay.example.com/api/v1'

spec/requests/discourse/sso_spec.rb

@@ -0,0 +1,41 @@
+require 'rails_helper'
+require 'webmock/rspec'
+
+RSpec.describe "Discourse SSO", type: :request do
+
+  describe "GET /discourse/connect" do
+    let(:user) { create :user, cn: 'jimmy', ou: 'kosmos.org' }
+
+    before do
+      Warden.test_mode!
+      login_as user, scope: :user
+      allow(user).to receive(:display_name).and_return('Jimbo')
+      allow(user).to receive(:is_admin?).and_return(false)
+    end
+
+    after do
+      Warden.test_reset!
+    end
+
+    context "with invalid SSO credentials" do
+      it "results in a failed signature check" do
+        expect {
+          get discourse_connect_path(
+            sso: "bm9uY2U9ODk2N2NiMmFlZTdlMjdjNzZiZTNkZWQ5ODIwYzMzN2QmcmV0dXJuX3Nzb191cmw9aHR0cCUzQSUyRiUyRmxvY2FsaG9zdCUzQTMwMDAlMkZzZXNzaW9uJTJGc3NvX2xvZ2lu",
+            sig: "01fc008ff7b51855217e879b6f14aaddefbbd4df2d128951f7bb70cfde834c2a"
+          )
+        }.to raise_error(DiscourseApi::SingleSignOn::ParseError)
+      end
+    end
+
+    context "valid SSO credentials" do
+      it "redirects to the Discourse SSO endpoint" do
+        get discourse_connect_path(
+          sso: "bm9uY2U9YjQwYWZmYzg0YWQ2NWE1ZTk5MjdlZWU1NWEzMjdhMTQmcmV0dXJuX3Nzb191cmw9aHR0cCUzQSUyRiUyRmxvY2FsaG9zdCUzQTMwMDAlMkZzZXNzaW9uJTJGc3NvX2xvZ2lu",
+          sig: "b7905c5db612391293249ad5272dac493681efcd255133f6c2aff91ba654a319"
+        )
+        expect(response).to redirect_to('http://discourse.example.com/session/sso_login?sso=YWRtaW49ZmFsc2UmZW1haWw9amltbXklNDBleGFtcGxlLmNvbSZleHRlcm5hbF9pZD0xJm5hbWU9SmltYm8mbm9uY2U9YjQwYWZmYzg0YWQ2NWE1ZTk5MjdlZWU1NWEzMjdhMTQmcmV0dXJuX3Nzb191cmw9aHR0cCUzQSUyRiUyRmxvY2FsaG9zdCUzQTMwMDAlMkZzZXNzaW9uJTJGc3NvX2xvZ2luJnVzZXJuYW1lPWppbW15&sig=d5f8b1d6db66569bef789fda4a3216119c2d42b84725d043c9a57dde1e528842')
+      end
+    end
+  end
+end